100+ articles quotidiens avec des fonctionnalités secrètes

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Vous êtes-vous déjà demandé quelles fonctionnalités cachées se trouvent dans les objets du quotidien ? Il existe plus de 100 objets quotidiens avec des utilisations secrètes que vous ne connaissez peut-être pas ! Par exemple, le trou dans les cuillères à pâtes peut mesurer une portion de spaghetti, et la petite poche dans les jeans était à l'origine destinée aux montres de poche. Même votre agrafeuse possède probablement un extracteur intégré en dessous. Plongez dans ces astuces géniales et découvrez tous les détails astucieux cachés à la vue de tous !  Animation créée par Sympa. ---------------------------------------------------------------------------------------- Musique par Epidemic Sound https://www.epidemicsound.com   Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna​ ---------------------------------------------------------------------------------------- Nos réseaux sociaux : Facebook: https://www.facebook.com/sympasympacom/ Instagram: https://www.instagram.com/sympa.officiel/  Stock de fichiers (photos, vidéos et autres): https://www.depositphotos.com https://www.shutterstock.com https://www.eastnews.ru ----------------------------------------------------------------------------------------  Si tu en veux encore plus, fais un tour ici:  http://sympa-sympa.com

Transcript

00:00:00You're trying on a jean, a dress or a jacket and you're about to put your hand in the pocket when suddenly you realize that it's impossible.

00:00:09There are no pockets at all.

00:00:11But why sew pockets in which you can't put anything?

00:00:15You can now pick up your iPhone on the floor.

00:00:19Well, the reason is very simple.

00:00:22Adding pockets on some clothes could damage the cut that was initially given to them.

00:00:27They can deform them in the warehouse or on the detailer's showcase.

00:00:32The solution? Get rid of pockets in key places.

00:00:36In addition, fake pockets cost much less and they don't distance themselves.

00:00:41This curious practice dates back to the 17th century.

00:00:45At that time, pockets were removable.

00:00:48They were like small bags and women, for example, could pass them from one outfit to another.

00:00:53Unfortunately, it was also very convenient for pickpockets.

00:00:57Nothing could be simpler than taking hold of these pockets.

00:01:00Then clothes evolved.

00:01:03And we started sewing thin pockets instead of these detachable bags.

00:01:08It was thought that this would embellish the silhouette.

00:01:12But soon, narrower skirts appeared.

00:01:15And pockets became a catch.

00:01:18People started using handbags instead.

00:01:21Today, most pockets are real.

00:01:23But fakes haven't completely disappeared.

00:01:25So how do we make sure that our clothes have a pocket and that we won't find a simple hole by putting our hand in it?

00:01:32First, take a look at the seam along the edge of the pocket, where it is supposed to open.

00:01:38If you see a single loose thread, cut a piece and start pulling gently.

00:01:43If the pocket is real, the thread will come out easily.

00:01:46But if the seam doesn't move, it is very likely that it is a fake pocket.

00:01:52In this case, drop it.

00:01:56Now let's see what other everyday objects have a little secret.

00:02:01For example, these lines on certain varieties of crisps.

00:02:05They help to distribute spices and seasonings.

00:02:08Basically, all these substances that give your crisps their taste are retained between these lines.

00:02:15And they make them more crispy.

00:02:19The outliners are filled with a fluorescent, semi-transparent ink that shines under low light.

00:02:25Yellow and light green are the most popular, because they allow you to see the text when you make a black and white photocopy.

00:02:33The photocopiers don't detect these colors and the page remains clear.

00:02:39In the past, there was a problem with jeans.

00:02:43The workers and miners, who were the first to wear them, often mistreated them during their work.

00:02:49And the seams wouldn't resist and would tear.

00:02:54Tiny metal rivets were added to reinforce this popular garment.

00:02:59Most metal zippers lock automatically.

00:03:02That's why you shouldn't let the zipper point up.

00:03:05When you bring it down, it locks, in a way.

00:03:08This is thanks to small grooves hidden under the zipper.

00:03:13Now let's talk about these horizontal lines on plastic bottles.

00:03:17It's thanks to them that the bottles stand up.

00:03:20Some bottles are made of flexible plastic.

00:03:22Without these lines, they would deform.

00:03:24They would be all twisted and could even break.

00:03:28The bath foam is not only used to have fun or to perfume the water.

00:03:31It is also used to regulate the temperature.

00:03:33The bubbles retain the heat and you can enjoy your bath longer.

00:03:37With or without plastic ducks.

00:03:40Did you notice this layer of transparent liquid in the gel-based pen?

00:03:44This is what we call the follow-up liquid or the stop liquid.

00:03:47The gel in these pens contains dissolved pigment particles in a polymer solution.

00:03:52The gel must be thick enough to hold the particles in suspension.

00:03:55But also fluid enough to flow first on the ball, then on the paper.

00:04:01The stop liquid prevents the gel from evaporating or flowing.

00:04:05Without this transparent liquid, your gel-based pen would not write.

00:04:10The liquid is fixed and does not dissolve with the gel.

00:04:14It does not move backwards and does not flow out of the pen.

00:04:18The holes at the bottom of your headphones allow the air to circulate and pass through the speakers.

00:04:24This increases the low frequencies, which improves the quality of the bass sounds.

00:04:28And the sound quality in general is improved.

00:04:31Some plastic milk containers have holes on the side.

00:04:35It's because they keep hitting each other.

00:04:39These holes have several functions.

00:04:41First of all, when the milk stops flowing, it usually causes inflation and increases the pressure inside the container.

00:04:50This is when the hole is useful.

00:04:52It inflates and prevents the container from bursting.

00:04:55In addition, if you decide to freeze your milk, it freezes on the inside.

00:04:59If you decide to freeze your milk, it will dilate like any other liquid.

00:05:03And this hole will inflate and your bottle of milk will remain intact in your freezer.

00:05:08A good thing!

00:05:11Airplane shutters have rounded edges and this is very important for safety.

00:05:15This avoids accidents.

00:05:18The weak points are generally located in the corners.

00:05:20If the airplane shutters were square or rectangular, they would therefore have four weak points.

00:05:26With the pressure, it could be catastrophic.

00:05:30If you look closely at the air cables of the shutters, you will see that they zigzag instead of running in a straight line.

00:05:38All shutters have pantographs on their roofs.

00:05:42The upper part of the pantograph gradually sweats at the contact of the cable.

00:05:47And in the end, it must be replaced.

00:05:50So that it sweats evenly, the cables do not follow a straight line, but in a zigzag.

00:05:55The shutters move forward and its pantograph sweats more slowly.

00:06:03You may have already wondered why some gas cans have two holes with caps, a large and a smaller one.

00:06:09Before, I thought that the small hole was used to pour the liquid into a small container.

00:06:13But I was wrong.

00:06:15And it's very rare.

00:06:17In reality, you have to uncap it before pouring your gas through the large hole.

00:06:22You will avoid it from sticking and spreading on the ground by accident.

00:06:27Most of the buttonholes of a shirt are vertical.

00:06:30But those at the top, and sometimes at the bottom, are horizontal.

00:06:34The reason is simple.

00:06:36These two buttons slide more often than the others.

00:06:39Fortunately, the manufacturers have found a solution to prevent these buttons from sliding.

00:06:43Horizontal buttonholes.

00:06:45What ingenuity!

00:06:47The buttons break down less often in this type of buttonhole.

00:06:50Sugar or salt bags are easier to open than you think.

00:06:54You don't have to tear off one of the ends.

00:06:57The right method is to tear them in the middle.

00:07:01Some boots have loops at the top of the heel.

00:07:04They help you put on your shoes more easily.

00:07:07All you have to do is pull on the loop while you push your heel into the boot.

00:07:11You can also use these loops to hang your shoes when they are dirty, or when you want to dry them after washing.

00:07:17You can also put your shoelaces through the loop if you want to hang them around your ankle.

00:07:23When you are on a plane, you may notice a small triangle above your seat.

00:07:28These triangles indicate to the on-board staff the best places to check the flights of the plane through the canopy.

00:07:33You are never too safe.

00:07:35If your shoes are really too slippery, you just need to take a little bit of sandpaper and rub it on your soles.

00:07:41They will hang better and you can wear them when it rains.

00:07:45But be careful not to sand them too much. Your feet could get wet.

00:07:52If you drill a few holes in the bottom of your trash can, it will be easier for you to place and take out your bags.

00:07:58The air will circulate better and will not hold them back anymore.

00:08:02You will usually find silicon gel in your bags, shoes and many other things you buy.

00:08:08This gel absorbs excess moisture.

00:08:10Don't throw away your bags.

00:08:12Every time your shoes are wet, put a few of them inside.

00:08:17Thermoses were not invented to keep your coffee hot.

00:08:21They were designed by a Scottish scientist who wanted to keep his chemical products at a stable temperature.

00:08:27So he took two bottles, put the smallest one inside the biggest one and removed the air between the two.

00:08:33But it's still convenient for picnics.

00:08:36Well, today I'm going to show you things you've never seen and tell you things you didn't know.

00:08:42Wow! All this in one video? What a chance!

00:08:45For example, these fountain stations in fast food.

00:08:48We all think they're great, but have you ever wondered where all this soda came from?

00:08:53Come, I'll take you behind the scenes.

00:08:56In fact, we come across a pile of cans with tubes.

00:08:59So when the drink is exhausted, the employees change the box and reconnect the tube.

00:09:04Well, let's take a look at some other places where we're not supposed to be.

00:09:09Here, for example, is what you'll see if you open a Mac's screen.

00:09:13And here's what's hidden behind the dryers of a washing machine.

00:09:17Today, 4 out of 5 households in the United States have a laundry dryer.

00:09:21But it was not as widely accessible when they appeared in the 1950s.

00:09:25Because they were way too expensive for the average consumer.

00:09:28Shopping is a common practice.

00:09:31And we've all spent a million times in front of refrigerators for dairy products.

00:09:35But have you ever wondered what was behind it?

00:09:38It turns out that they're just shelves.

00:09:41And that the store employees stack the products on the other side.

00:09:44It's quite logical, but I never imagined things like that.

00:09:47This photo shows what's behind the elevator buttons.

00:09:50Obviously, a hell of a lot of cables.

00:09:53The buttons are all connected to a computer that manages the elevator.

00:09:56How does the computer know where the cabin is?

00:09:59There are several possible systems.

00:10:02But the most common is a long, vertical ribbon in the gen.

00:10:05With a series of holes.

00:10:08A sensor counts the right number of holes that have passed.

00:10:11And that's how the location is determined.

00:10:14Well, there are also two or three common things.

00:10:16But their usefulness remains a great mystery to most people.

00:10:19So let me share these secrets with you.

00:10:22These metal ribbons on jeans have been around since the very beginning.

00:10:25Jacob Davies, the legendary man who made the first pair of jeans,

00:10:28added brass ribbons to the places where pants are more likely to tear.

00:10:31Today, they have a more decorative and distinctive purpose.

00:10:34Since they are a traditional attribute of classic jeans.

00:10:37And that's why they're called metal ribbons.

00:10:40And that's why they're called metal ribbons.

00:10:42And that's why they're called metal ribbons.

00:10:45I bet you know that there are additional holes on some shoes.

00:10:48No, it's not for perspiration or ventilation.

00:10:51These are holes for laces.

00:10:54Just like the other holes you use.

00:10:57But they are there to fix your shoe around the ankle

00:11:00to prevent your foot from moving inside.

00:11:03It is particularly useful if you are hiking

00:11:06and you go up and down hills and trails.

00:11:08Have you noticed these half-waist belts

00:11:11that many coats and jackets have on the back?

00:11:14It turns out that they appeared for the first time on military jackets

00:11:17so that the additional fabric can be gathered in the back

00:11:20and that the person is not crowded while working.

00:11:23Today, these belts are only added because of style and tradition.

00:11:27Most of the clothes you buy are delivered

00:11:30with a small bag of fabric or a button, or both.

00:11:33These elements are not useless.

00:11:35The buttons, of course, can be used to replace those that are lost.

00:11:38The pieces of fabric are useful for two things.

00:11:41You can put a hole in it, but the main goal

00:11:44is to provide you with a sample of the fabric

00:11:47so that you can use it to test different washing products on it

00:11:50and see what happens.

00:11:53Now, the pompoms on wool hats.

00:11:56Did you know that sailors wore hats with pompoms

00:11:59in the 18th century to protect their heads

00:12:02in case they were accidentally hit?

00:12:05In Scotland, the colour of the pompom

00:12:08indicates the social status of the person.

00:12:11People started wearing pompoms again with these pretty decorative objects

00:12:14during the Great Depression.

00:12:17They are made from recycled thread,

00:12:20so it was a good way to decorate your hat.

00:12:23You may have noticed that some sidewalks

00:12:26have small plaques with bumps.

00:12:29Most people don't pay much attention to it,

00:12:32but they are very important for visually impaired people.

00:12:35You can use them for various things.

00:12:38Did you notice that the icon of a gas tank

00:12:41on the side of a car has a small arrow next to it?

00:12:44Well, this arrow is useful.

00:12:47It indicates the side of the car where the gas tank is.

00:12:50It is very useful for distracted people

00:12:53who constantly wonder which side they are on.

00:12:56And also for those who drive rental cars from time to time.

00:12:59The answer is right in front of you.

00:13:02If you don't see the arrow on your sign,

00:13:05you can find it on the back of many makeup and hygiene products.

00:13:08You can find this symbol with a marking

00:13:11like 6M, 12M and 24M.

00:13:14This is the number of months this product can be used

00:13:17before you have to throw it away.

00:13:20You may know that whistles work perfectly

00:13:23even if they don't have this little ball inside.

00:13:26And yet they do. But why?

00:13:29Even if the whistle makes a sound without the ball,

00:13:32it is quite neutral and is not noticed enough.

00:13:35This ball starts to move at each blow.

00:13:38This creates different heights

00:13:41and makes the sound more noticeable.

00:13:44This is not for nothing that the whistle sticks

00:13:47have these square holes at their ends.

00:13:50When the candy is placed on the stick,

00:13:53a part of the stick enters the hole,

00:13:56fixing the candy part.

00:13:59This way, the candy ball or any other shape

00:14:02has less chance of detaching from the stick.

00:14:05Some people know that you can use it

00:14:08to stick it on the side of the surface you are measuring.

00:14:11But this is not the only cool thing about it.

00:14:14Look, there is also a small slit.

00:14:17This slit can be used to hang it to a nail.

00:14:20Once again, to free your hands and continue to measure.

00:14:23The bottom of the end of the ribbon has a striated edge.

00:14:26It will help you to make a mark if you don't have a marking tool with you.

00:14:29Have you ever wondered why the blade of the ribbon is curved?

00:14:32Well, it keeps it tilted when deployed.

00:14:35In addition to numbers and marks,

00:14:38there are also black slats.

00:14:41These are present every 48.8 cm.

00:14:44And they are useful to the workers of the building

00:14:47to space out the engineering beams.

00:14:50They can also be useful if you want to hang something heavy, for example.

00:14:53The diamond will mark the exact center of a candy

00:14:56which is placed 40 cm from each other.

00:14:59And you can drill something in this center

00:15:02to make sure that what you hang is well fixed.

00:15:05Most of the coins have stripes.

00:15:08And this is the heritage of the old days.

00:15:11You see, at the time, all coins were linked to a range of silver.

00:15:14The amount of silver used in a piece

00:15:17was proportional to the value of the piece.

00:15:20So, the more silver there was in the manufacture of the piece,

00:15:23the more it had value.

00:15:26Do you remember the lonely ranger?

00:15:29Silver was the name of his horse.

00:15:32But forget it.

00:15:35He had to earn a little money.

00:15:38This was not seen on a single piece.

00:15:41But if it was done on several,

00:15:44people could recover a good part of the precious metal.

00:15:47So, to avoid fraud, the edges were equipped with crests for safety.

00:15:50So, if someone tried to rake them, the stripes disappeared.

00:15:53And no one wanted to accept this piece anymore.

00:15:56Clever!

00:15:59Today, as no one makes silver coins,

00:16:02the pieces simply symbolize the value.

00:16:05A typical plastic bottle of milk

00:16:08often has inverted circles on one or several sides.

00:16:11These are not circles of extraterrestrial culture.

00:16:14This reinforcement is there to make the pot more resistant

00:16:17and prevent it from erupting in case the pot fell to the ground.

00:16:20The reinforcement gives a little more space to the liquid to expand.

00:16:23In addition, as the expiration date approaches,

00:16:26the microbes present in the milk begin to expel gases.

00:16:29As there are more to be trapped inside,

00:16:32the pressure in the pot increases.

00:16:35This increases the charge of the expansion

00:16:38and prevents the pot from exploding.

00:16:41And the cows are obviously delighted that their hard work is not wasted.

00:16:47If you ever find yourself stuck in the trunk of your car,

00:16:50stay calm.

00:16:53All cars are supposed to be equipped with an emergency lock

00:16:56that opens the trunk of the interior in case of need,

00:16:59which is very unlikely.

00:17:02These locks are so well designed that they can be opened

00:17:05and, in addition, the handles are designed to be bright in the dark.

00:17:08You can even pull them with your mouth

00:17:11if there is not enough room to use your hands.

00:17:14And this, no matter how you landed in this trunk.

00:17:17Change of subject.

00:17:20If you work with wire and a needle,

00:17:23do not forget that it is not necessary to insert the needle directly into the coil.

00:17:26You risk losing it, not to mention that you could easily prick yourself

00:17:29and hurt your finger.

00:17:32Nowadays, many sewing kits are equipped with a location

00:17:35that is located in the lower part of the wire coil.

00:17:38Just take it out.

00:17:41It is even possible to store several needles at the same time.

00:17:44The disposable pens have a little secret.

00:17:47Have you ever noticed that on some of them

00:17:50there is a small hole in the plastic part?

00:17:53This is actually a basic ventilation system.

00:17:56It is supposed to allow the ink to reach the tip of the pen easily.

00:17:59OK, I know it's a super common reflex,

00:18:02but it is not really necessary to shake the dispensers of spices

00:18:05to get the product out.

00:18:08You don't believe me? You are not the only one.

00:18:11So go get your favorite salt or pepper bottle in your closet.

00:18:14If it has one of these removable plastic caps,

00:18:17it is perfect for this experiment.

00:18:20Instead of shaking the bottle, try to hold it by the plastic cap

00:18:23while it is upside down.

00:18:26Slowly rotate the bottle from one side to the other

00:18:29and you will see that the condiment will flow

00:18:32without you having to shake the bottle

00:18:35The salt and pepper dispensers have stripes

00:18:38at the bottom of the upside-down part.

00:18:41In case the seasoning gets stuck inside,

00:18:44place the bottom of the salt dispenser

00:18:47against the bottom of the pepper dispenser

00:18:50and make small circles so that the seeds

00:18:53stick to each other.

00:18:56The condiment should now flow easily

00:18:59without you having to open the bottle.

00:19:02When it is cold, it often happens that you wear

00:19:05a slippery jacket.

00:19:08Some jackets have an integrated solution to fix this problem

00:19:11in the form of a small strap on the shoulder

00:19:14with a hook or a button.

00:19:17It is designed to open and close easily

00:19:20so that you can keep your handbag in place permanently.

00:19:23Most of the time, a peeler is only used to remove the skin

00:19:26of potatoes, carrots or cucumbers.

00:19:29But you can also use your vegetable peeler

00:19:32to cut thin slices of onion.

00:19:35This can also prevent you from crying

00:19:38with your onion.

00:19:41Most people don't pay attention to this,

00:19:44but if you take a closer look at your toothpaste tube,

00:19:47you will certainly see small colored lines,

00:19:50whether they are dots or squares.

00:19:53The colors can vary.

00:19:56They can be black, green, red or even blue.

00:19:59These colored dots are actually intended to help

00:20:02the toothpaste assembly machines.

00:20:05Look at your shoes.

00:20:08If there is an element that seems a little strange to you,

00:20:11know that it is always there for a good reason.

00:20:14Most manufacturers do not add any additional elements

00:20:17to the shoes just for fun.

00:20:20It would be a waste of time and money, you can imagine.

00:20:23On winter shoes, for example, there is often a small loop

00:20:26at the top and at the back.

00:20:29It is there to help you put them on,

00:20:32because you can adjust it quickly by pulling on it.

00:20:35It is also there to dry,

00:20:38because most of these little boots are designed to be worn

00:20:41during the coldest and humidest months.

00:20:44I admit that it has already happened to me at least once

00:20:47to accumulate layers of clothing to avoid having to put everything

00:20:50in my suitcase.

00:20:53But this becomes problematic when it comes to sitting down.

00:20:56What do you do with your coat or jacket?

00:20:59The next time you take the plane,

00:21:02look closer at the seat in front of you.

00:21:05If it is comfortable, you can use it.

00:21:08Most mascaras expire in a delay of 3 to 6 months,

00:21:11depending on the manufacturer.

00:21:14But you can speed up this process if you are not careful.

00:21:17By continuously pumping the brush of the mascara

00:21:20to try to distribute more product,

00:21:23you fill the tube with air.

00:21:26The mascara then dries much faster

00:21:29and does not fill its mission as before.

00:21:32There is a simple way to check

00:21:35whether the brush is dry.

00:21:38You may need to buy a new one.

00:21:41I know that we live in an era of devices connected by Bluetooth.

00:21:44But for a sound of better quality,

00:21:47it is always recommended to use headphones

00:21:50that connect via audio jacks.

00:21:53Do you remember noticing black stripes on these jacks?

00:21:56They are not there just to hold them

00:21:59when you plug them into your phone or laptop.

00:22:02Made in a special insulating material,

00:22:05you can guess which end goes where.

00:22:08An empty space under the nozzles in a cup

00:22:11does not mean that the company that produced them

00:22:14wanted to scam you by depriving you of a complete portion.

00:22:17No, no, it is a way to protect the nozzles during their transport.

00:22:20It also facilitates the circulation of hot water

00:22:23that is poured on the nozzles before they are tasted.

00:22:26This V-neck collar was originally designed

00:22:29to meet several objectives.

00:22:32First of all, it is a way to extend the life of the garment

00:22:35over the years.

00:22:38It also serves to pass the head through the sweater

00:22:41in case it needs to be stretched.

00:22:44In this way, it ensures a better grip around the neck.

00:22:47Finally, it helps to absorb sweat

00:22:50if you wear the jacket during a sports session.

00:22:53It is no longer a common practice,

00:22:56but you may one day come across a jacket

00:22:59with an additional mysterious pocket on the right side.

00:23:02It turns out that this pocket was once used by men

00:23:05to go to work every day.

00:23:08It allowed them to keep their buttoned jacket

00:23:11while benefiting from a pocket.

00:23:14Today, it is no longer than a useless decoration.

00:23:17Speaking of things that we no longer use today,

00:23:20or at least not in their initial purpose,

00:23:23did you know that Pledo was originally a cleaning product?

00:23:26In the 1920s, the industrialists needed a product

00:23:29that would help them clean the upholstered area

00:23:32around the coal ovens.

00:23:35This was invented.

00:23:38It was made only in white and was supposed to clean the bread paper

00:23:41by being rolled back and forth on the dirt.

00:23:44It was only later, in the 1940s,

00:23:47that new products intended to clean the bread paper

00:23:50were born and that Pledo was redirected

00:23:53to another sector of the market.

00:23:56Although I still enjoy eating a good piece of toasted bread

00:23:59for breakfast, isn't it boring to have to clean the toasted bread?

00:24:02Well, not anymore, because I recently discovered

00:24:05a panel at the bottom

00:24:08that allows you to easily get rid of all these annoying crumbs.

00:24:11It was a time when video games could only be used

00:24:14by inserting cartridges into the console of your choice.

00:24:17However, these small objects gave a lot of headaches

00:24:20to many doctors.

00:24:23People, especially the youngest, began to end up in the hospital

00:24:26after swallowing small game cartridges.

00:24:29Nintendo, the company that manufactures most of these devices,

00:24:32had to find a creative solution to avoid these accidents.

00:24:35This is why, nowadays, Nintendo Switch cartridges

00:24:38are voluntarily coated with special chemicals

00:24:41that leave a really unpleasant bitter taste in the mouth.

00:24:44Clearly, I do not recommend you to try and taste for yourself.

00:24:48Have you ever wondered what these additional holes

00:24:51at the top of your sports shoes are for?

00:24:54They are designed so that you can attach the shoes in several different ways.

00:24:57It is useful when you want to compensate for things

00:25:00like a bad stroke or even a damaged toe.

00:25:02In addition, you can modify the look of your shoes

00:25:05as you wish.

00:25:08Many people use the cover of their books as a page marker.

00:25:11This is not a problem.

00:25:14Thanks to it, you will not have to frame your pages.

00:25:17But the first objective of a cover

00:25:20is to protect the book from external damage.

00:25:23For example, if you spill fruit juice

00:25:26or if you drop food on your book while you read it.

00:25:29The tic-tac box has this little groove on the top

00:25:32so that you can distribute a single tic-tac at a time.

00:25:35Even if, let's be honest, no one does that.

00:25:38Most of us spill a lot at once

00:25:41and then we put all these tic-tacs in excess.

00:25:44These little rubber tips

00:25:47that you see between the tire tread

00:25:50are there for your safety.

00:25:53They tell you what is the minimum height of your tread.

00:25:56If the tips and edges are equal,

00:25:59it is time for you to go to a tire store as soon as possible.

00:26:02If there is a margin compared to the edge, you can ride quietly.

00:26:05What about this black grid on the window of the microwave?

00:26:09This is what is called a Faraday cage.

00:26:12And it is there to prevent the microwaves from escaping

00:26:15and to turn the whole room into an oven.

00:26:18If the microwaves escape,

00:26:21your meal will not be able to cook properly either.

00:26:24Indeed, this cage is not there to prevent you from seeing your meal while it is cooking,

00:26:27but so that the electromagnetic energy stays inside.

00:26:29And why not a screwdriver compatible with a wrench?

00:26:32Grip your screwdriver with the end of your wrench

00:26:35to increase its torsion force.

00:26:38This is why the head of your screwdriver is designed as it is.

00:26:41When you have weird angles, you can use this strategy.

00:26:44You have probably already heard this myth.

00:26:47The blue side of the rubber can erase the pen.

00:26:50It's wrong.

00:26:52Its purpose is also to erase the pencil.

00:26:55But in case you write something on a more robust paper.

00:26:57The blue side can also remove these traces

00:27:00that may remain after using the pink rubber.

00:27:03Have you ever wondered why the oranges in supermarkets

00:27:06were most often in red mesh bags?

00:27:09It's a tip for the fruits to have a brighter color,

00:27:12which encourages you to buy them.

00:27:15A bonus tip, do not throw away this mesh bag.

00:27:18Tie it to have enough to cook your pans and clean your sink,

00:27:21your kitchen appliances, as well as your dishes.

00:27:24You can see that golf balls do not have a perfectly round shape.

00:27:27Their surface is covered with many small crevices,

00:27:30which golf balls have not always had.

00:27:33At one point, experienced golfers began to notice

00:27:36that over time, the old balls presenting imperfections,

00:27:39such as notches and bumps, could fly further.

00:27:42These asperities create turbulence in the air around the golf ball,

00:27:46which ends up reducing its drag.

00:27:49Manufacturers have therefore begun to produce

00:27:51golf balls with pockets,

00:27:54so that they can go further and faster.

00:27:58You may have noticed that there were sometimes

00:28:01small crevices on the top of the asperities.

00:28:04It's more hygienic, because when you break it,

00:28:07you can press the asperity on it and it will not touch anything else.

00:28:10Another safety device that you will find

00:28:13this time in your car is a strap on your rearview mirror.

00:28:16With it, you can change the position of the mirror

00:28:18so as not to be blinded if there is a car behind you

00:28:21driving in the middle of the headlight.

00:28:24This little strap helps you to control the dimming of the lights

00:28:27coming from the rear.

00:28:30This function appeared in the 1930s,

00:28:33but it was only at the beginning of the 1970s

00:28:36that it became a standard equipment for most cars and other trucks.

00:28:39You see this little hole on your iPhone,

00:28:42right next to the rear-facing camera?

00:28:45It's a microphone, and it's there so that your phone

00:28:48can be heard.

00:28:51Some cables have a thick cylinder

00:28:54at the end of the cord.

00:28:57It's called a ferrite core.

00:29:00It's a magnetic iron oxide that stops

00:29:03electromagnetic interference at high frequencies.

00:29:06You see, for example, this annoying static noise

00:29:09that you get if you bring your phone too close to a speaker?

00:29:12It interferes with your call.

00:29:15That's why cable cords with large cylinders

00:29:18are so important.

00:29:21Do you know why almost all luggage bags

00:29:24and backpacks have two zippers?

00:29:27It's much more convenient and easier to open it that way.

00:29:30But that's not all.

00:29:33You can also lock these two sliding zippers together

00:29:36so that the things inside your bags are safe.

00:29:39You know how public places' toilets,

00:29:42like shopping malls, have these large spaces at the bottom of the door?

00:29:45It's mainly for better air circulation.

00:29:48Apart from that, if you're stuck inside

00:29:51and the lock is broken,

00:29:54there's always a way to get out.

00:29:57You can just crawl out.

00:30:00Have you ever noticed these plastic tips on the cutters?

00:30:03The blade also has a notch,

00:30:06which means you can renew it several times,

00:30:09always with sharp edges.

00:30:12You can separate these pieces of blade

00:30:15with these plastic tips.

00:30:18If you've already taken a moment

00:30:21to look at a Lambda supermarket cart,

00:30:24especially its foldable section,

00:30:27you've probably noticed these metal loops that protrude.

00:30:30They are designed to protect the items

00:30:33you carry in your cart.

00:30:36You can use them to hang bags

00:30:39containing soft items,

00:30:42like bread, which you don't want to accidentally crush

00:30:45with heavier products,

00:30:48or place them against the drawer of your dishwasher.

00:30:51This way, water won't accumulate inside

00:30:54and your favorite mug will be completely dry

00:30:57when you take it out of here.

00:31:00If you're a fan of McFlurry,

00:31:03you've probably noticed there was a square hole

00:31:06in the handle of their spoon.

00:31:09It's there so you can attach it to this special machine

00:31:12that mixes the ice cream with your favorite toppings.

00:31:15The machine has a bar that slides into this square-shaped spoon

00:31:18to minimize damage during the process.

00:31:21Pretty cool, isn't it?

00:31:24An ordinary can of milk

00:31:27usually has a bucket on the side.

00:31:30Some might see it as a random design choice,

00:31:33but this bucket has several purposes.

00:31:36One of them is to inflate if there's an accumulation of gas.

00:31:39This happens when your milk has turned.

00:31:42So you don't even need to taste it to check.

00:31:45In addition, the bucket is there so the bottle doesn't explode

00:31:48and allows for an expansion space

00:31:51that takes in the sudden pressure that happens when you drop the bottle.

00:31:54Toothpick

00:31:57It's obviously important to take care of your teeth

00:32:00and it's easy to guess how to use it.

00:32:03But it's also great in the kitchen

00:32:06because it's a very precise cake cutter.

00:32:09Much more efficient than an ordinary knife.

00:32:12Most kitchen scissors have a keyhole

00:32:15right here in the middle, where the blades and handles meet.

00:32:18It's something you can use to trim difficult herbs

00:32:21like thyme or rosemary.

00:32:24Thanks to this opening, you don't need to remove the leaves by hand.

00:32:27But you can remove them all in one move.

00:32:30A large part of yogurt or flan skins

00:32:33are supplied with an aluminum foil lid.

00:32:36And in most cases, you can use this lid

00:32:39as a disposable spoon.

00:32:42Just take it off, and after a few simple folds,

00:32:45you'll have a perfect little spoon for your four-hour meal.

00:32:49If you see it in the street,

00:32:52you'd think that a fire hose is about one meter high.

00:32:55But the actual size of this device,

00:32:58used to supply water to firefighters around the world,

00:33:01is twice as large as the rest of the fire hose

00:33:04that is hidden underground.

00:33:07Most of the time, they are red,

00:33:10and it's not just a matter of urban design.

00:33:13First of all, they must be bright and easily identifiable

00:33:15The choice of color depends on the amount of water

00:33:18that the fire hose can contain.

00:33:21It can vary depending on the location,

00:33:24but here's the logic.

00:33:27A red fire hose can project 1,890 liters of water per minute,

00:33:30while an orange one can project at least 3,780 liters.

00:33:33Green ones can pour 5,680 liters of water per minute,

00:33:36and the bigger ones, blue ones,

00:33:39can generally provide more than 5,680 liters.

00:33:42Hi, bowling fans!

00:33:45Most of them can get damaged

00:33:48due to poor storage or temperature peaks.

00:33:51Now, let's be honest.

00:33:54Since it's already a bit broken,

00:33:57aren't you curious to know what's inside your ball?

00:34:00Because I am. Let's take a look.

00:34:03The inner core of the ball is mainly made up of powder metallic oxides,

00:34:06such as calcium oxide or iron oxide.

00:34:09They are mixed with resin and a catalyst to harden the whole thing.

00:34:11The ball is actually its heaviest part.

00:34:14It also influences the way the bowling ball spins

00:34:17when it crosses the track.

00:34:20The same goes for paint bombs.

00:34:23When you shake it, it makes a strange noise.

00:34:26But what is this thing inside?

00:34:29It's a small weight, which is supposed to keep the paint mixture in place

00:34:32and keep its shape.

00:34:35It is generally made of plastic, metal or ceramic.

00:34:38It is mainly used as a wheel to ensure that the paint is well mixed

00:34:41with the paint.

00:34:44Do you know how to keep the bottles of sparkling water

00:34:47so long, so refreshing?

00:34:50Well, they have a small plastic seal attached to the lid.

00:34:53It is installed here to prevent the gas from escaping

00:34:56and the drink from becoming flat,

00:34:59even if you shake it in your bag all day long.

00:35:02Let's talk about things you use when it's very hot.

00:35:05Wait, wait, don't put on your cap yet.

00:35:08Look at it for a moment and you'll notice

00:35:11that when people started using such pieces to cover their heads,

00:35:14this button was good for something.

00:35:17As it is above the cap, where all the pieces of fabric meet,

00:35:20the upper button helps to keep the crown of the cap in one piece.

00:35:23Today, thanks to recent projects in the field of fabric design and patterns,

00:35:26this button has rather become an aesthetic element.

00:35:29It is used to cover the part where all the pieces of fabric meet.

00:35:32Your cap may not have a button,

00:35:35but don't you think it's nicer with it?

00:35:38Cotton discs have two sides.

00:35:41If you look closely, you will see that they have different textures.

00:35:44In case you're wondering why, the side with the texture is used to put on the makeup

00:35:47and the flat side is used to remove it.

00:35:50Book lovers, this is for you.

00:35:53Jackets that come with many books with a rigid cover

00:35:56are not only intended to embellish the book.

00:35:59They can also serve as bookmarks.

00:36:02Just fold the pages you've already read under the inside of the jacket, and that's it.

00:36:05The next time you take your favorite shirt,

00:36:08take a look at the buttonhole at the top.

00:36:11The buttonhole is vertical, while all the others are vertical.

00:36:14It turns out that the city shirt was designed this way

00:36:17because the first and last button are the first to unbutton during the day.

00:36:20They have therefore modified the direction of the buttonhole

00:36:23so that the shirt stays well adjusted before you are ready to remove it.

00:36:26Nowadays, we have so many different versions of this incredible dessert

00:36:30that it is difficult to imagine that we could have lived without it.

00:36:33You can find different types of cookies with chocolate chips

00:36:36in ice cream or even in cakes almost everywhere.

00:36:38But this famous cookie was only born in 1930.

00:36:41The story goes that a woman named Ruth Grave Wakefield

00:36:44was preparing cookies with chocolate

00:36:47while waiting for her guests to arrive.

00:36:50Very quickly, she realized that she had no more pastry chocolate,

00:36:53an essential ingredient to prepare classic biscuits.

00:36:56To remedy this situation, she bought a half-sweet chocolate bar

00:36:59thinking that it would end up evenly distributed in the dough

00:37:02given the heat of the oven.

00:37:05Things did not necessarily go as she had planned.

00:37:08And that's good, because that's how she invented this modern dessert

00:37:11that we can no longer ignore.

00:37:14And speaking of popular snacks,

00:37:17chips are even younger than cookies with chocolate chips.

00:37:20At least from a historical point of view.

00:37:23There are many stories that try to explain how they were invented.

00:37:26One of them is the following.

00:37:28A chef named George Crum, based in New York,

00:37:31created chips in 1953.

00:37:34He wanted to try a new cooking method

00:37:36and one of his customers was full of his chips.

00:37:39He said they were too thick and a little soft.

00:37:42Crum then imagined finely chopped potatoes

00:37:45and chips until they were brown.

00:37:48People loved this dish and welcomed

00:37:51this very first batch of chips in Brest-ouvert.

00:37:54Ice cream, anyone?

00:37:57If the story is true, in 1904,

00:38:00at the Saint-Louis Universal Exhibition,

00:38:03an ice cream vendor ran out of cups to serve his specialty.

00:38:06The rest now belongs to history.

00:38:09Okay, I admit it.

00:38:12Similar products to chewing gums have existed since Ancient Greece.

00:38:15So this discovery is not particularly revolutionary.

00:38:18But the chewing gum we buy today

00:38:21appeared at the end of the 1800s.

00:38:24An American inventor named Thomas Adams

00:38:27wanted to mix different chemicals to create synthetic rubber.

00:38:30He tried and failed, moreover,

00:38:33to exploit the properties of gum for his experiment,

00:38:36so he used gum to produce a certain number of chewing gums.

00:38:39In the 1800s, a man named Jean-Baptiste Joly

00:38:42worked in the textile industry as a fabric manufacturer.

00:38:45The discovery of the following invention,

00:38:48which we use a lot nowadays,

00:38:51has a little to do with him and more to do with his wife.

00:38:54The story goes that the woman accidentally

00:38:57threw a kerosene lamp on a tablecloth.

00:39:00Instead of getting angry when seeing the damaged fabric,

00:39:03Joly noticed that the substance had actually cleaned the fabric.

00:39:06Did you understand?

00:39:09Yes, this is how the very first pressing was born.

00:39:12A very clean accident, if I may say so.

00:39:15Now, I love this one.

00:39:18Did you know that kerosene lamps were originally called friction lights?

00:39:21In any case, this is the name their inventor,

00:39:24a chemist named John Walker, gave them in 1826.

00:39:27One day, he scratched a chemical product-coated stick

00:39:30on his chimney by pure chance,

00:39:33and realized that it was igniting and creating sparks.

00:39:36The sparks, which were originally made of cardboard,

00:39:39were then made from wooden sticks and glass paper.

00:39:42In the 1940s, a man named Harry Coover

00:39:45came across a chemical formula

00:39:48that seemed to adhere to everything it touched.

00:39:51At the time, the scientific community

00:39:54did not think much about the question,

00:39:57because the formula did not seem to have much application at the time.

00:40:00It was only in 1951 that he thought a little more about the formula

00:40:03and decided to reuse it,

00:40:06using a complete name,

00:40:09adhesive composition based on methyl cyanoacrylate.

00:40:12But you must know it under the shorter version, superglue.

00:40:15It has so much use in terms of safety today

00:40:18that it is difficult to believe that we did not invent it on purpose.

00:40:21In 1903, a scientist named Edward Benedictus

00:40:24dropped a bottle by accident.

00:40:27Looking down, he was amazed to see that the bottle had slightly melted,

00:40:30but had retained its shape.

00:40:33He expected it to break into a thousand pieces.

00:40:36He was surprised by this unknown peculiarity until then.

00:40:39He pondered the question and discovered that what kept the glass in place

00:40:42was a substance, nitrate of cellulose,

00:40:45which covered the inside of the glass.

00:40:48This is how humanity discovered the glass of safety.

00:40:51Imagine that you are an art detective

00:40:54and that your mission is to explore the mysteries

00:40:57that are hidden behind the most famous paintings in the world.

00:41:00We are talking about the works of Leonardo da Vinci, Michelangelo or Picasso.

00:41:03Do not forget your magnifying glass

00:41:06and let's get started.

00:41:09The first city on your list is Rome.

00:41:12After tasting delicious pasta,

00:41:15you head to the Sistine Chapel,

00:41:18which houses the most famous ceiling in the world.

00:41:21Have you ever heard that Michelangelo painted frescoes while lying down?

00:41:24It's just a myth.

00:41:27In reality, the painter created a complex platform system

00:41:30that allowed him to paint standing up.

00:41:33You are admiring the creation of Adam,

00:41:36the precise significance of human anatomy.

00:41:39Art experts claim that the right part of the painting

00:41:42is an anatomically correct representation of an enlarged brain.

00:41:45To verify this,

00:41:48you try to superimpose an image of the organ and the work of art.

00:41:51It seems to correspond.

00:41:54The cerebellum, the optic nerve and the pituitary gland are all there.

00:41:57Even the floating thing in the form of a green scarf

00:42:00seems to correspond to the vertebral artery.

00:42:03Some researchers think that this is the way

00:42:06of knowledge and wisdom,

00:42:09but you need a night's sleep to get a definitive idea.

00:42:12The next day, you catch a train and arrive in Florence.

00:42:15It's time to taste an Italian ice cream,

00:42:18then you go straight to the Galleria Accademia.

00:42:21One of the most famous sculptures in the world

00:42:24awaits you inside, the David of Michelangelo.

00:42:27This David is a marvel of marble 5 meters high.

00:42:30It has been sculpted for about 3 years.

00:42:33The mystery surrounding it

00:42:36is that it is a real expression of the statue.

00:42:39When you look at it from below,

00:42:42you can tell that its face is serene and peaceful.

00:42:45But art historians say that this work has been largely misunderstood.

00:42:48Apparently, its body hides a very different story.

00:42:51Take a closer look,

00:42:54and you will notice that its eyebrows are frowned

00:42:57and that the veins of its arms are sagging.

00:43:00It doesn't look so relaxed after all, does it?

00:43:03Michelangelo's idea was to represent David

00:43:06but maybe he wasn't as serene as that.

00:43:09Italy is so rich in works of art

00:43:12that you can't leave right away.

00:43:15You are still in Florence and you are now visiting the famous Gallery des Offices.

00:43:18Many famous paintings are housed in this museum.

00:43:21But the one that interests you the most

00:43:24is Botticelli's Spring.

00:43:27This work of art has been shrouded in mystery from the start.

00:43:30Experts can't say the exact year it was commissioned.

00:43:33It remained without a title for years

00:43:36until the painter Giorgio Vasari

00:43:39finally found a name for it.

00:43:42Usually, when critics and the public admire this painting,

00:43:45they focus on the characters in the foreground.

00:43:48But in this case, the real work lies

00:43:51in the fact that Botticelli painted

00:43:54more than 46 different plant species

00:43:57with almost photographic precision.

00:44:00And in the whole painting,

00:44:03these plant figures are repeated more than 200 times.

00:44:06It's quite a feat, isn't it?

00:44:09Are you ready to continue?

00:44:12You jump in a plane and arrive in Paris,

00:44:15the city of light, love and the famous Joconde.

00:44:18You cross the Louvre Museum

00:44:21and arrive in front of Leonardo da Vinci's masterpiece.

00:44:24There are many theories about this work of art

00:44:27and you dive into some of them.

00:44:30Solid arguments have been made to say

00:44:33that the Joconde could be a self-portrait of the painter himself.

00:44:36And they are surprisingly similar.

00:44:39And then there is the theory of the corner smile.

00:44:42The dentist and art expert Joseph Bartofsky

00:44:45claims to have discovered the secret of Mona Lisa's rictus.

00:44:48He says that his tight facial expression

00:44:51is the typical indication of a person

00:44:54who has lost his front teeth.

00:44:57In 2010, the Italian Committee for Cultural Heritage

00:45:00also discovered a collection of hidden symbols in the painting.

00:45:03These are only visible with high-tech magnifying glasses

00:45:06but they revealed that Leonardo da Vinci

00:45:09had inscribed an LV inside the right eye of Mona Lisa.

00:45:12Experts think it is the painter's signature

00:45:15but the other symbols, a CE in the left eye

00:45:18and a 72 in the arch of the bridge in the background

00:45:21are still not elucidated.

00:45:24Well, that's a lot of discoveries at once.

00:45:27Of course, at the end of your visit,

00:45:30don't forget to test if these eyes really follow you.

00:45:33Now you're going to Amsterdam

00:45:36to visit the Rijksmuseum.

00:45:39You came to see a specific painting by Rembrandt

00:45:42which hides a mysterious story.

00:45:45La Ronde de Nuit is one of the most famous paintings

00:45:48by the Flemish painter but experts say

00:45:51that the name of the painting does not correspond to its content.

00:45:54Let's take a closer look.

00:45:57The painting represents a large group

00:46:00ready to embark on a mission.

00:46:03Rembrandt's technique is called chiaroscuro

00:46:06and in 1927, art critics thought

00:46:09that the painter was painting a night scene.

00:46:12But when the painting was removed from a thick layer of dust,

00:46:15it clearly appeared that the scene was taking place in the middle of the day

00:46:18with the sun falling from the upper left corner.

00:46:21It is now too late to change its name to Ronde de Jour.

00:46:24During your stay in Amsterdam,

00:46:27you also visit a museum dedicated to the art of Vincent van Gogh.

00:46:30Did you know that he painted more than 900 paintings

00:46:33during a period of only 10 years?

00:46:36The Van Gogh Museum houses the largest collection

00:46:39of turquoise paintings you will probably see in your life.

00:46:42In fact, almost all of Van Gogh's paintings

00:46:45have dominant yellow tones.

00:46:48This particularity of his art may be the result

00:46:51of his way of seeing the world.

00:46:54Some art experts have hypothesized that one of Van Gogh's medicines

00:46:57modified his perception of colours

00:47:00by making him see more yellow around him.

00:47:03Well, our journey continues.

00:47:06Let's go to the National Gallery.

00:47:09You could spend hours admiring the painting

00:47:12Les Époux Arnolfini by Jan van Eyck

00:47:15and not see anything out of the ordinary.

00:47:18In the foreground, a couple is holding hands

00:47:21and staring at the spectator.

00:47:24But if you zoom in on the mirror attached to the wall,

00:47:27you will see two other people in the room.

00:47:30Art experts say that the male character of the painting

00:47:33has his hands up to greet these two people seen in the mirror

00:47:36and that it is not the only filigree the painter has left.

00:47:39Above the mirror, you will see his flamboyant signature

00:47:42Jan van Eyck was here in 1434.

00:47:45Speaking of painters who leave clues of their own presence,

00:47:48Caravaggio, the famous Italian painter of the Renaissance,

00:47:51left a small Easter egg

00:47:54in one of his famous paintings, Bacchus.

00:47:57This one is a bit difficult to spot.

00:48:00In the half-full carafe,

00:48:03in the lower left corner of the painting,

00:48:06you will see a tiny self-portrait of the painter himself

00:48:09hidden in the liquid.

00:48:12To see the image clearly, you need a sophisticated technology

00:48:15or at least a very efficient magnifying glass.

00:48:18But he is here, a male character,

00:48:21alias Caravaggio, with a brush in his hand.

00:48:24Funny fact, the tiny self-portrait

00:48:27was noticed for the first time in 1922,

00:48:30more than 300 years after the painting was finished.

00:48:33But it was ignored due to its poor preservation.

00:48:36You fly across the Atlantic to Chicago.

00:48:39The huge collection of the Art Institute

00:48:42houses a well-known painting by Pablo Picasso,

00:48:45the Old Guitarist.

00:48:48The secret of this painting is so well hidden

00:48:51that it needs the help of X-ray machines

00:48:54and super-sophisticated technology.

00:48:57But the results are worth it.

00:49:00The evidence shows that Picasso painted the Old Guitarist

00:49:03on top of another unfinished painting.

00:49:06Picasso abandoned it in the middle of his work.

00:49:09The emerging artists of the time

00:49:12often used this way to save money

00:49:15because paintings were expensive.

00:49:18And that's it for this tour of the world of works of art.

00:49:21Tiring, isn't it?

00:49:24So take a break, Sherlock Holmes.

00:49:27Crackers are holes to prevent them from cracking

00:49:30and then breaking during cooking.

00:49:33Without these holes, steam would accumulate in the dough

00:49:36and it would be difficult to cook.

00:49:39If you look at the capsule of a soda bottle,

00:49:42you will notice that there is a plastic disc inside.

00:49:45It is used to seal the liquid and the gases

00:49:48so that the drink remains sparkling.

00:49:51The long neck of the bottle is designed so

00:49:54to encourage you to hold it there.

00:49:57In this way, the heat of your hand

00:50:00will only warm up this part of the bottle

00:50:03instead of making your whole bottle warm.

00:50:06This way, you can escape.

00:50:09Acting like a shield of Faraday,

00:50:12it is used to protect you while ensuring

00:50:15adequate cooking of the food.

00:50:18Some products, such as packets of crisps,

00:50:21contain up to 43% nitrogen.

00:50:24One might think that we are sold a bag half filled with air,

00:50:27but it's quite the opposite.

00:50:30The oxygen, the gas we breathe in contact with the crisps

00:50:33would induce a reaction that would quickly make them rust.

00:50:36This inert gas keeps the food

00:50:39and prevents it from getting damaged during transport.

00:50:42Crisps wrapped in an air cushion remain crispy

00:50:45and do not risk turning into crumbs.

00:50:48The donuts are hollowed out so that the outside

00:50:51and the inside cook uniformly.

00:50:54Before the addition of the holes, the inside was generally

00:50:57greasy and doughy and the edges were crispy.

00:51:00The marks on the paper sheets are not used to write

00:51:03the dates or the lists of numbers.

00:51:06It is used as a protection.

00:51:09At the time, rats were a real problem in houses

00:51:12and paper was one of their favourite food.

00:51:15Steps were used as a security device.

00:51:18Rats would rather nibble on the white paper

00:51:21which encircled the part intended for writing.

00:51:24This hole in the stem of your saucer

00:51:27is not there to prevent suffocation in case of ingestion.

00:51:30It is actually used to hold the donut in place.

00:51:32The hole in the stem of your saucer

00:51:35is used to hold the donut in place.

00:51:38In this process, the donut would be more fragile

00:51:41and would come off more easily.

00:51:44Vacuum cleaners have a lot of accessories

00:51:47but what is the purpose of this brush?

00:51:50It is useful for dust removal

00:51:53and its shape is perfect for cleaning frames,

00:51:56curtains or tiles.

00:51:59What is the difference between a wooden belt

00:52:02and a metal belt?

00:52:05A wooden belt is used to hold the donut

00:52:08but it also repels mites and other insects.

00:52:11Salt is not only useful in the kitchen.

00:52:14It can get rid of strong odours.

00:52:17Rubbing salt on your fingers after chopping garlic

00:52:20should get rid of the odour

00:52:23and it also works for shoes.

00:52:26The bread grates have a secret drawer in the bottom

00:52:29which can be removed to clean

00:52:32the holes in the donut.

00:52:35When you drink a sip of coffee in a saucer

00:52:38with a lid, the pressure in the saucer decreases

00:52:41and the air tries to get in.

00:52:44The little hole on the lid allows the air to circulate

00:52:47and the drink can flow smoothly through the main opening.

00:52:50And that's not all.

00:52:53The little pressures on the top of the saucers

00:52:56are used to inform the staff and customers

00:52:59about the contents of the saucers to differentiate them.

00:53:02You just have to look at which one is pressed

00:53:05to know what it corresponds to.

00:53:08The numbers on the fruit labels give us information

00:53:11about the way they were grown.

00:53:14If there are 4 numbers, the first one is a 4 or a 3,

00:53:17the fruit was treated with pesticides.

00:53:20If there are 5 numbers, the first one is an 9,

00:53:23it is from organic farming.

00:53:26If there are 5 numbers, the first one is an 8,

00:53:29it has undergone genetic modifications.

00:53:32When shopping, remember to use the hooks on the cart

00:53:35to hang the bags.

00:53:38In this way, the most fragile items, such as bread, eggs,

00:53:41fruits and vegetables, will not be crushed by heavier products.

00:53:44If you have no one with you to help you hold your tape measure,

00:53:47while you are trying to measure something,

00:53:50you just have to nail it.

00:53:53Place your nail at the level of the dedicated little hole

00:53:56that the tape measures usually have,

00:53:59and you just have to unroll it.

00:54:02The fillings with the ice,

00:54:05they hang directly on a machine and start spinning.

00:54:08The padlocks used outside suck quickly because of the rain.

00:54:11You see this little hole down there?

00:54:14It is used to pour engine oil.

00:54:17This trick allows you to lubricate the mechanism

00:54:20and the key should spin again effortlessly.

00:54:23You've been hitting the bottom of the ketchup bottle for two hours,

00:54:26but nothing comes out? Here's a little trick.

00:54:29Put the bottle diagonally and tap in the middle of the neck.

00:54:32Then use a folded paper shovel to serve ketchup or mustard.

00:54:35Ready for the scoop?

00:54:38These little ramekins are actually supposed to unfold

00:54:41to become real little paper plates that can hold a lot more sauce.

00:54:44The little hole on the handle of the pans or pans

00:54:47is not only used to hang them on the wall.

00:54:50While you cook, place the end of the handle of the utensil

00:54:53that you are using in this hole.

00:54:56It will be held above the preparation that is being cooked

00:54:59and will avoid splinters.

00:55:02The two colored hairs of a toothbrush are there to tell us

00:55:05when it is necessary to change them.

00:55:08If you notice that these hairs are considerably pale,

00:55:11change toothbrush or just your head, depending on the case.

00:55:14The upper hole of the sink has many functions.

00:55:17First, it prevents water from overflowing

00:55:20if someone forgets to close the tap.

00:55:23It also allows water to evaporate faster,

00:55:26allowing air to escape while the water flows.

00:55:29Most of the Metallic light closures have a hidden locking system

00:55:32that is annoying, like an open bracket.

00:55:35Don't let the handle go up.

00:55:38If you lower the handle, the lock will automatically lock.

00:55:41All thanks to these little notches placed under the handle.

00:55:44Perimeter milk produces gases, like most perimeter foods.

00:55:47Some plastic milk cans have a concave part on one of the sides.

00:55:50If the milk turns and produces gases,

00:55:53this part of the bottle will inflate

00:55:56and the concave shape becomes convex.

00:55:59The same thing will happen if you put the can in the freezer.

00:56:02It will take up more space than in a liquid form.

00:56:05The foam bath is not only made to have fun and feel good.

00:56:08It also regulates the temperature.

00:56:11The bubbles keep the water warm and you can enjoy your bath longer.

00:56:15However, this only works for acrylic baths.

00:56:18They are made of metal, losing heat quickly in all cases.

00:56:22Many cups and mugs have small grooves on the bottom.

00:56:26This is designed for dishwashing.

00:56:28They allow the water to flow and thus prevent

00:56:31the water from spilling out of the dishwasher.

00:56:34These grooves allow the air to circulate

00:56:37so that the cup does not crack, even if the tea is boiling.

00:56:40The small tips in the cream tube caps are also useful.

00:56:43Most of the tubes are sealed with aluminum.

00:56:46It is impossible to drill without saying goodbye to your nails.

00:56:49These tips open all the cream tubes, even the most resistant ones.

00:56:53The escalator brushes are not used to clean and polish your shoes.

00:56:56Applying wax on a moving escalator can be complex.

00:57:00These brushes are there for safety reasons,

00:57:03preventing users from approaching the edge of the steps.

00:57:06They reduce the risk that the bottom of a long coat

00:57:09or an evasive pant is stuck between the steps.

00:57:12All tic-tac boxes are designed to make only one tic-tac come out at a time.

00:57:17The lid has the same shape as the candy.

00:57:20Turn the box down, shake it gently and open it.

00:57:23You will see that there is only one candy in the hole of the box.

00:57:26If you usually shake the box until it falls directly into your mouth,

00:57:30then you do not know how to eat tic-tacs.

00:57:33Originally, the pompom on the caps was not just a fashion accessory.

00:57:36It prevented sailors from hitting their heads hard on the ceiling,

00:57:39typically very low, of the ships.

00:57:42So then, did you know that the first logos in history are blazons?

00:57:47In the Middle Ages, bar and commerce owners

00:57:50began to use different symbols to present their products

00:57:53and to distinguish themselves from other merchants.

00:57:57But why is it so important for a brand to have a logo?

00:58:01Well, it's because the first impression always counts,

00:58:04including for a company.

00:58:07A well-designed logo can send a good message to potential customers

00:58:11and give information about the brand in one look.

00:58:14With all the existing logos of today,

00:58:17especially with the advent of online commerce,

00:58:19we often forget to pay attention to the meaning

00:58:22and the hidden symbols contained in the logos.

00:58:25The Domino's Pizza logo says a lot about the past of the chain.

00:58:29As its name suggests, there is a domino piece in the design of the logo.

00:58:34Originally, the idea was to add a point on the domino piece

00:58:38for each new open restaurant.

00:58:41But the chain has developed so much that adding points

00:58:44for all open restaurants was impossible.

00:58:46The three points that exist today in the logo

00:58:49remind us of the first three open restaurants.

00:58:52If we look at the Beats logo,

00:58:55the first thing that catches our eye is the letter B,

00:58:59but there is a hidden meaning.

00:59:02The red circle corresponds to a head

00:59:05and the letter B represents headphones.

00:59:08Another very customer-oriented logo is that of LG.

00:59:13The company was able to include in its logo its name,

00:59:17Lucky Gold Star, and its slogan, Life is Good.

00:59:21By looking closely at the logo,

00:59:24we notice that it is not just letters L and G,

00:59:27but also a smiling face.

00:59:29These are probably the most famous jeans manufacturers in the world,

00:59:33but their logo has a hidden meaning.

00:59:36The Levi's logo represents a pocket,

00:59:39the one found on all their jeans.

00:59:43The FedEx logo is also very cool.

00:59:46At first glance, we simply spot the words Fed and X

00:59:50in two different colors, purple and orange.

00:59:53But if we look closer,

00:59:56the space between the E and the X represents an arrow pointing to the right.

01:00:00It is a symbol of movement and agility.

01:00:03The Unilever group owns more than 400 brands around the world.

01:00:09It is therefore normal that their logo is made up of several different symbols,

01:00:13such as a flower, a spoon or a bird.

01:00:16All of these symbols represent the variety of products made by Unilever

01:00:21that go from food and drinks to beauty and hygiene products.

01:00:25NBC, the National Broadcasting Company,

01:00:29is an audiovisual and radiophonic group

01:00:31whose logo is particularly pleasant to look at.

01:00:34It is bright and colorful.

01:00:36Why?

01:00:38The logo was created when the color TV appeared.

01:00:41The bird-shaped logo of NBC

01:00:44represents the initial six divisions of the group.

01:00:47And the colors remind us that NBC is proud of its TV shows.

01:00:52The Evernote logo clearly shows the brand's goal.

01:00:56The police used is quite simple,

01:00:59but on the left of the word Evernote, there is an elephant,

01:01:02a well-known animal for its good memory.

01:01:05And its ear is folded like a post-it.

01:01:08Not bad for an app that is used to organize and take notes, right?

01:01:12The Cisco logo also has its little secret.

01:01:16The police is once again relatively simple,

01:01:19but the lines just above represent the Golden Gate Bridge in San Francisco.

01:01:24The company's first CEO, a man named John Morgridge,

01:01:28thought it was a good way to highlight the movement towards the future

01:01:32and the relationship between two worlds.

01:01:34The Amazon logo is everywhere.

01:01:36But there is a small detail that people don't know about.

01:01:39The arrow that connects the letters A and Z in the shape of a smile

01:01:43is used to underline the excellence of the inventory of available products,

01:01:47which is complete from A to Z.

01:01:50Audi is one of those companies that likes to highlight their history.

01:01:54These four simple crossed circles on the logo

01:01:58represent the four companies that were originally part of the group.

01:02:02DKW, Orch, Wanderer and Audi.

01:02:07There is another cool story behind the Baskin Robbins logo.

01:02:11Between the B and the R, in the center of the logo, we see the number 31.

01:02:16Why? Because originally, Baskin Robbins produced 31 ice creams.

01:02:21I'm almost sure I've tasted them all.

01:02:24Many companies like to give their logos a vintage touch.

01:02:28This is the case with Picasa.

01:02:30Before the invention of digital cameras and perfect hand-held photography,

01:02:34there were obturators on silver cameras.

01:02:38The obturator opens and lets the light pass

01:02:41that exposes the film by creating the photo.

01:02:44The Picasa logo is simply an obturator

01:02:47colored in red, blue, green, purple and orange.

01:02:51The 7-Eleven logo hides a little something

01:02:55that you may not have noticed.

01:02:57The N at the end of the name is written in lowercase,

01:03:00while the other letters are all in uppercase.

01:03:03It seems that in the 60s,

01:03:05the company's owner's wife asked for the logo to be less severe.

01:03:09She had the impression that uppercase letters made everything too serious.

01:03:13She wanted the logo to be softer.

01:03:16A graphic designer found the solution

01:03:19by replacing the final uppercase N with a lowercase N.

01:03:22Yes, I'm sure that now you will pronounce this N very slowly.

01:03:27Or not.

01:03:29Chocolate fans probably know the Toblerone brand.

01:03:32If you are one of them,

01:03:34have you noticed all the details of the logo?

01:03:37The city of Bern, in Switzerland,

01:03:39where the company was born,

01:03:41is also called the city of bears.

01:03:43There are bears everywhere in Bern.

01:03:45There are bears on the city's lawn

01:03:47and even on the trash in the streets.

01:03:49The Toblerone chocolate is in the shape of a mountain,

01:03:52hence the mountains in the logo.

01:03:54But there is also a bear hidden in the mountain,

01:03:57hidden in the light part.

01:03:59The Chic Fil A logo goes straight to the goal.

01:04:02If you look closely,

01:04:04the C of Chicken is in the shape of a chicken.

01:04:08Another excellent example of the use of negative spaces

01:04:12is the Formula 1 logo.

01:04:14Between the F of Formula and the horizontal lines

01:04:17that represent the flames,

01:04:19there is a well-hidden 1.

01:04:21I'm sure you've never noticed.

01:04:24It's one of the most famous sportswear brands in the world

01:04:27and it has a secret.

01:04:29Adidas.

01:04:30At first glance,

01:04:32the logo simply represents three vertical stripes.

01:04:34But it looks like a mountain, doesn't it?

01:04:36This mountain represents the efforts

01:04:39that the athletes have to make to reach the top.

01:04:42The IBM logo also has a hidden meaning.

01:04:46The three letters of the company's name,

01:04:48the I, the B and the M,

01:04:50are inscribed horizontally.

01:04:52These lines represent speed and dynamism,

01:04:55the company's main values.

01:04:58With its super cool logo,

01:05:01Ray-Ban has become the benchmark

01:05:03in terms of sunglasses.

01:05:05Here's a little decryption

01:05:07to make sure you don't confuse them

01:05:09with watchmakers.

01:05:11The B of the logo represents a pair of glasses.

01:05:14The most widely used source of information on the Internet,

01:05:17Wikipedia, has a logo that matches it.

01:05:20The globe is made up of several puzzle pieces,

01:05:22each with a different symbol

01:05:24and some missing pieces.

01:05:25This logo perfectly represents

01:05:27the mission of the encyclopedia,

01:05:29because it's a good lesson in storytelling,

01:05:31isn't it?

01:05:33Subway is one of those brands

01:05:35that intelligently combine the logo

01:05:37and the company's name.

01:05:39The arrows on the letters S and Y

01:05:41look like the arrows of the metro directions

01:05:43to send the message

01:05:45that you can eat delicious meals anywhere.

01:05:48It's hard to miss the two hidden chocolates

01:05:50in the logo of Hershey's.

01:05:52But there is another,

01:05:53even more hidden.

01:05:55Do you see it?

01:05:57It's between the letter K and the letter I.

01:06:00If you've already set up a house

01:06:02or organized a wedding,

01:06:04you've probably used Pinterest

01:06:06to find and share ideas.

01:06:08The logo of Pinterest

01:06:10just looks like a letter P in a red circle.

01:06:12But look carefully,

01:06:14this P is in the shape of a penis.

01:06:16For a little-trained observer,

01:06:18the logo of the London Symphony

01:06:20is a simple red line.

01:06:21But in reality,

01:06:23this line represents

01:06:25an orchestra conductor.

01:06:27Another brand

01:06:29whose logo hides secrets

01:06:31is Magic Coffee.

01:06:33The cup of coffee above the name

01:06:35has the shape of a high form,

01:06:37if you look closely.

01:06:39OK, now I'm hungry.

01:06:42The cylinder

01:06:44at the end of a cable

01:06:46is placed there

01:06:48and seems totally useless.

01:06:49In fact,

01:06:51it is a pearl of ferrite

01:06:53that is associated with many electric wires

01:06:55to reduce electromagnetic interference.

01:06:57The electric wires

01:06:59act as involuntary antennas

01:07:01and diffuse the EMIs.

01:07:03There is a reason

01:07:05why the tray inside the microwave

01:07:07is circular.

01:07:09A circular object

01:07:11uniformly distributes heat,

01:07:13unlike rectangular or square objects.

01:07:15When you place containers

01:07:17with these shapes inside,

01:07:19they are placed on the corners

01:07:21instead of being evenly distributed

01:07:23like in a round container.

01:07:25The temperature gauge of a bread grill

01:07:27is generally used to determine

01:07:29the degree of cooking of the pies.

01:07:31But the other more specific use

01:07:33of the gauge

01:07:35is that of different types of bread.

01:07:37White and sweet breads

01:07:39heat up much faster

01:07:41than brown and rye breads,

01:07:43which are heavier.

01:07:45The older the bread,

01:07:47the more time it will need

01:07:49to cook.

01:07:51Most ovens offer you the possibility

01:07:53to leave the door open

01:07:55when you grill a dish inside.

01:07:57You probably think

01:07:59that the goal is to cool the oven

01:08:01after use.

01:08:03In reality,

01:08:05its goal is to focus

01:08:07on the cooking of the top of the dish

01:08:09and ensure a crispy layer.

01:08:11By controlling the accumulation

01:08:13of heat and steam

01:08:15by releasing it through the slightly open door,

01:08:17you get the desired result

01:08:19with a crispy layer.

01:08:21The dish contains specific areas

01:08:23for different types of covers

01:08:25and dishes.

01:08:27But all dish items

01:08:29must be oriented towards the center

01:08:31and not all in the same direction.

01:08:33The types of food on the plates

01:08:35will also determine

01:08:37their location in the lockers.

01:08:39As the center of the machine

01:08:41receives the strongest gel,

01:08:43stains made of glucide

01:08:45from tomatoes and potatoes

01:08:47must be placed here.

01:08:49This is why protein-based stains

01:08:51such as egg stains

01:08:53must be placed here.

01:08:55The ceiling fans

01:08:57push the fresh air down

01:08:59when it's hot

01:09:01and circulate the dish.

01:09:03But they can also be used

01:09:05in winter

01:09:07if you switch the switch

01:09:09on the side

01:09:11or if you use the pull.

01:09:13So if you want to save money

01:09:15on heating

01:09:17and try to heat your dish

01:09:19from the bottom to the top

01:09:21and spread the hot air around you

01:09:23by heating the dish more efficiently.

01:09:25Do you still use post-it notes

01:09:27instead of these new sophisticated applications

01:09:29on all imaginable devices?

01:09:31Welcome to the club!

01:09:33Whatever you use them for,

01:09:35they always end up falling.

01:09:37If you've already encountered this problem,

01:09:39it's because you took them off

01:09:41from the bottom to the top.

01:09:43It's this way of doing things

01:09:45that causes the peeling.

01:09:47By taking them off from the side,

01:09:49you get rid of the peel.

01:09:51Did you know that the can opener

01:09:53was invented only 50 years after

01:09:55the can opener became commonplace?

01:09:57So how was it possible

01:09:59to open a can opener before?

01:10:01There are a few alternative methods

01:10:03in case you've missed your can opener.

01:10:05All you need

01:10:07is a metal spoon.

01:10:09Place the can on the worktop,

01:10:11hold it firmly

01:10:13and hold the spoon's head well.

01:10:15Press and rub vigorously

01:10:17the edge of the can's lid

01:10:19against the lid of the can opener.

01:10:21It takes time,

01:10:23but by rubbing,

01:10:25a small notch is formed

01:10:27and soon turns into a hole.

01:10:29Once the hole is wide enough

01:10:31to let the tip of the spoon through,

01:10:33lever the lid

01:10:35and continue to lengthen the edges

01:10:37until you can finally

01:10:39access the meal it contains.

01:10:41You've earned it!

01:10:43Most toilets depend on the pressure

01:10:45of water and gravity to function.

01:10:47A power failure

01:10:49can be a concern

01:10:51in the event of a power failure.

01:10:53The good news is

01:10:55that the electricity

01:10:57is only used to fill the toilets

01:10:59and not to draw water.

01:11:01As the mechanism of water drawing

01:11:03still works,

01:11:05open the toilet tank,

01:11:07pour a few litres

01:11:09and you can evacuate

01:11:11everything you need.

01:11:13The nozzles in shower canals

01:11:15occur over a long period of time.

01:11:17It's inevitable.

01:11:19Hair is the main source

01:11:21of obstruction,

01:11:23which encourages the accumulation

01:11:25of various other things.

01:11:27A good trick is to use

01:11:29your vacuum cleaner

01:11:31and put the tip in the hole

01:11:33after removing the grid.

01:11:35Use a damp cloth

01:11:37around the tip

01:11:39to make sure the air

01:11:41can't escape.

01:11:43The vacuum cleaner

01:11:45will be able to vacuum

01:11:47things that obstruct

01:11:49and keep them as far away

01:11:51as possible from water

01:11:53and humidity.

01:11:55This will ensure

01:11:57that the wax of your candle

01:11:59remains firm and stable

01:12:01and continues to burn

01:12:03more slowly

01:12:05for a longer period.

01:12:07The empty space

01:12:09between the windows

01:12:11of the oven door

01:12:13is there for a good reason.

01:12:15You can slide a brush

01:12:17to clean the window

01:12:19without having trouble

01:12:21determining how far you should be.

01:12:23All cars are not equipped

01:12:25with sensors that ensure

01:12:27that you keep the right distance

01:12:29before the bumper

01:12:31makes a notch on the wall.

01:12:33Stretching a rope

01:12:35with a tennis ball

01:12:37from the ceiling

01:12:39at the right distance

01:12:41will help you learn

01:12:43the best distance

01:12:45to respect

01:12:47when parking

01:12:49or when parking.

01:12:51An excellent alternative

01:12:53is to draw with a grey pencil

01:12:55along the edges of the key

01:12:57and then insert it

01:12:59into the lock.

01:13:01Keep doing this

01:13:03until the lock hole

01:13:05is lubricated

01:13:07and the key works

01:13:09without any problem.

01:13:11Clamps are likely

01:13:13to damage the taps

01:13:15and shower heads

01:13:17when you use them

01:13:19so make sure

01:13:21you have a good grip

01:13:23and avoid the risk of wear.

01:13:25You can find a good use

01:13:27for used rubber

01:13:29for different things

01:13:31in the house.

01:13:33When you have enough

01:13:35to tighten or loosen

01:13:37a screw with a screwdriver

01:13:39try using a simple rubber.

01:13:41Place a part

01:13:43in the handle of the screwdriver

01:13:45and it will have

01:13:47a much better grip.

01:13:49Three simple cylinders

01:13:51can make all the difference

01:13:53no matter the size of the block.

01:13:55Try lifting the edge

01:13:57of the first pipe

01:13:59with a lever

01:14:01then push and move it

01:14:03by gradually directing

01:14:05the three pipes

01:14:07to the desired place.

01:14:09Make sure you don't

01:14:11do it in a slope.

01:14:13The first time you

01:14:15put a nail in

01:14:17can be a great success

01:14:19if you manage

01:14:21to hit the nail without fear.

01:14:23Use a pencil

01:14:25instead of a pen

01:14:27or a pencil

01:14:29when you work

01:14:31with a circular saw

01:14:33to make sure

01:14:35that the marks

01:14:37are not erased.

01:14:39They will also be

01:14:41easier to see

01:14:43under water.

01:14:45Check the pipes

01:14:47on the roof

01:14:49and on the gutters

01:14:51and place a pair

01:14:53of old sport shoes

01:14:55at the foot of the ladder.

01:14:57The distance between the shoe

01:14:59and its grip

01:15:01will provide

01:15:03an additional level

01:15:05of safety.

01:15:07Liquid caulking products

01:15:09are generally

01:15:11in the form

01:15:13of huge tubes

01:15:15so you can never

01:15:17use them all at once.

01:15:19You can also

01:15:21use them

01:15:23without any blockage.

01:15:25I know it's a bit cold

01:15:27especially during

01:15:29a cold winter day

01:15:31but did you know

01:15:33that brass door handles

01:15:35are really useful

01:15:37in addition to being

01:15:39elegant and shiny?

01:15:41As it is a copper alloy

01:15:43brass has antimicrobial properties

01:15:45which means

01:15:47it can help

01:15:49protect your shoes.

01:15:51Nowadays,

01:15:53we no longer see

01:15:55a lot of door handles

01:15:57of this type.

01:15:59Speaking of beautiful

01:16:01polyvalent objects,

01:16:03most screwdrivers

01:16:05have a little secret

01:16:07that is unique.

01:16:09They can sometimes

01:16:11slide into a key

01:16:13to create more torque

01:16:15during torsion

01:16:17not to mention

01:16:19the fact that

01:16:21the buttons

01:16:23are placed

01:16:25in this way

01:16:27is a sign

01:16:29of wealth.

01:16:31It's easy to imagine

01:16:33why this practice

01:16:35is still used

01:16:37even though

01:16:39most people

01:16:41wear them

01:16:43nowadays.

01:16:45The next time

01:16:47you receive a package

01:16:49cut from the cardboard

01:16:51you can use the sharp edge

01:16:53of the blade

01:16:55to avoid buying

01:16:57a new cutter.

01:16:59The upper segment

01:17:01of the next line

01:17:03can break

01:17:05to obtain a new

01:17:07super sharp edge.

01:17:09To do this,

01:17:11look at the small hole

01:17:13at the base of the tool

01:17:15sometimes called

01:17:17the blade breaker.

01:17:19You will find silica gel bags

01:17:21somewhere at the bottom of the box.

01:17:23As this gel is a tool for drying,

01:17:25it absorbs the humidity

01:17:27of its environment

01:17:29so that you can keep

01:17:31these bags for other occasions.

01:17:33If you need to dry your phone

01:17:35or another electrical object,

01:17:37you can put it in a container

01:17:39next to the silica gel

01:17:41to reduce the damage.

01:17:43No need to be a mechanic

01:17:45to know when the tires

01:17:47of a standard car

01:17:49are made up

01:17:51of a pile of rubber notches.

01:17:53When the marks are equal

01:17:55to the perpendicular bars,

01:17:57this is the sign

01:17:59that you have to meet

01:18:01your local car service

01:18:03because it is likely

01:18:05that the tires have lost

01:18:07most of their traction

01:18:09and that they are no longer

01:18:11safe for driving.

01:18:13The upper corners of a car's windshield

01:18:15have textured black dots

01:18:17integrated at the edge of the glass.

01:18:19Ceramic glue

01:18:21is added to the glass

01:18:23to protect its seal

01:18:25from UV rays.

01:18:27It also allows you

01:18:29to conceal and create

01:18:31a coarser surface

01:18:33for the glue

01:18:35used to put the glass in place.

01:18:37Every time you hit the road,

01:18:39check if there is

01:18:41a small strip

01:18:43under the rearview mirror

01:18:45of your car.

01:18:47I bet you didn't know

01:18:49about the rearview mirrors.

01:18:51These manual rearview mirrors

01:18:53were invented in the 1930s

01:18:55but became the norm

01:18:57in the 1970s.

01:18:59When you are in the car,

01:19:01take a look at the headrests

01:19:03because you probably don't know

01:19:05that they have a hidden function.

01:19:07Of course, they can be adjusted

01:19:09to suit all sizes of passengers

01:19:11so that they benefit

01:19:13from adequate head and neck support.

01:19:15The hidden feature

01:19:17is that they are detachable

01:19:19so that when you are in a car

01:19:21and you have to run away quickly,

01:19:23these parts can be very useful

01:19:25to break the car's windows.

01:19:27So, you are driving around

01:19:29and you suddenly run out of gas.

01:19:31What I am going to describe

01:19:33is more like a joke

01:19:35than a real situation

01:19:37likely to occur.

01:19:39But what happens

01:19:41if you are in such a hurry

01:19:43that you accidentally leave

01:19:45with the gasoline gun

01:19:47in the tank?

01:19:49There is a separation valve

01:19:51that allows the pipe

01:19:53to be detached

01:19:55when you pull it

01:19:57with sufficient force.

01:19:59Initially designed

01:20:01in the early 20th century

01:20:03to be worn exclusively

01:20:05by basketball players,

01:20:07baskets have quickly

01:20:09become one of the essential

01:20:11pieces of fashion

01:20:13just like jeans

01:20:15and leather jackets.

01:20:17If you look at them closely,

01:20:19it is also to allow people

01:20:21to be more creative

01:20:23with their laces

01:20:25when they wear their shoes.

01:20:27Admit it,

01:20:29you have always thought

01:20:31that chopsticks are united

01:20:33at one end

01:20:35in order to keep them together

01:20:37until you are ready

01:20:39to start your meal.

01:20:41This may not be quite true.

01:20:43If we look at them closely,

01:20:45it turns out that these wooden tools

01:20:47have a square-shaped end.

01:20:49A separate unit

01:20:51can then be used

01:20:53as a support for the chopsticks

01:20:55in order to keep them cleaner

01:20:57in the hope that they can be reused

01:20:59since they will not touch the table

01:21:01or any other surface.

01:21:03Women's bicycles

01:21:05have a special design

01:21:07that surprisingly

01:21:09has a historical and fashionable function.

01:21:11The lower frame

01:21:13is largely intended

01:21:15to compensate for the generally

01:21:17smaller size of women

01:21:19wearing long skirts

01:21:21and dresses all day long.

01:21:23Every day,

01:21:25they had to make sure

01:21:27that their outfits

01:21:29would not get stuck in the frame.

01:21:31This is how we designed a bicycle

01:21:33with a lower frame

01:21:35perfectly adapted to women

01:21:37and their needs of the time.

01:21:39The fact that the toothpaste

01:21:41is multicolored

01:21:43is not only a nice advantage

01:21:45to make dental hygiene more fun.

01:21:47There is a secret explanation

01:21:49for the use of toothpaste

01:21:51and so we looked for products

01:21:53that could do more than just

01:21:55clean the teeth.

01:21:57A company was the first to do it

01:21:59by adding a mouthwash

01:22:01to its toothpaste,

01:22:03that is, the blue strip.

01:22:05It then added the red strip

01:22:07intended to contain ingredients

01:22:09that help you take care of your gums.

01:22:11Speaking of toothpaste,

01:22:13check the cap the next time

01:22:15you open a new tube

01:22:17and you might have a little surprise.

01:22:19You can use the mouthwash

01:22:21without cutting yourself

01:22:23or damaging your gums.

01:22:25Not to mention that it is more hygienic

01:22:27since you will not be able to transfer

01:22:29germs or other bacteria

01:22:31into the product itself.

01:22:33As for the articles

01:22:35to be placed on the counter

01:22:37of the bathroom,

01:22:39toothbrushes are equipped

01:22:41with a very practical accessory

01:22:43hidden in the hairs.

01:22:45In addition to giving the toothbrush

01:22:47a cooler look,

01:22:49you can also palate

01:22:51to indicate when

01:22:53you should replace your toothbrush.

01:22:55Dentists say that toothbrushes

01:22:57must be replaced every 3 to 4 months,

01:22:59but this gives you a good reminder

01:23:01in case you forget.

01:23:03Do you still like to play with Legos?

01:23:05I'm not judging you,

01:23:07it's a great hobby for all ages.

01:23:09Note that there is a hole

01:23:11on the top of the Legos' heads.

01:23:13This is a safety device

01:23:15designed by Legos

01:23:17to avoid the risk of suffocation.

01:23:19The purpose of this device

01:23:21is to obstruct the airways.

01:23:23The presence of a hole

01:23:25inside the Legos' head

01:23:27allows the air to flow freely

01:23:29through the piece

01:23:31until it can be safely removed.

01:23:33We are now used to

01:23:35all kinds of modern bulbs,

01:23:37some in tubular form,

01:23:39others in diamond form

01:23:41and others still completely twisted.

01:23:43Historically,

01:23:45the bulbs were round

01:23:47and this initial shape

01:23:49gave them this round shape.

01:23:51The practical reason

01:23:53was that the filament of the bulb

01:23:55had to be at the same distance

01:23:57from each surface of the glass sphere.

01:23:59The easiest way to achieve this

01:24:01was to make the glass

01:24:03in the shape of a globe.

01:24:05Have you ever vibrated

01:24:07in your room

01:24:09listening to some of your favorite songs

01:24:11and admiring

01:24:13the low sound of your speaker

01:24:15while it delighted your earplugs

01:24:17at high decibels?

01:24:19Some of you

01:24:21are probably screaming

01:24:23on your screens

01:24:25right now

01:24:27to say that your speakers

01:24:29are green, red

01:24:31or any other color of the rainbow.

01:24:33First of all,

01:24:35we said almost always

01:24:37and then,

01:24:39if you look closely

01:24:41at the beautiful design

01:24:43of your music player

01:24:45in bright colors,

01:24:47you will see that the speaker

01:24:49has a diaphragm

01:24:51with black particles on it.

01:24:53So, as soon as a sound is amplified,

01:24:55it sends a charge through the diaphragm

01:24:57and these black particles

01:24:59are pushed up.

01:25:01The carbon particles

01:25:03that bounce and touch

01:25:05the upper membrane of the diaphragm

01:25:07are responsible for the creation

01:25:09of some of the distinct sounds

01:25:11of our speakers

01:25:13that we are mounting.

01:25:15The speakers manufacturers

01:25:17must have had enough

01:25:19and their logical solution

01:25:21was to color

01:25:23most of the speakers in black.

01:25:25Another practical reason

01:25:27why speakers are most often

01:25:29colored in black

01:25:31is that it is a color

01:25:33that fits easily

01:25:35with many types of decor.

01:25:37Walls, furniture and clothes

01:25:39are often raised

01:25:41when they are combined

01:25:43with this color.

01:25:45This is why it is so widespread.

01:25:47According to several studies,

01:25:49speakers are found everywhere

01:25:51nowadays.

01:25:53In your television,

01:25:55your laptop and your phone.

01:25:57You can't escape them,

01:25:59but let's take a look

01:26:01at how it all started.

01:26:03Their origins are in radio

01:26:05and telephone technology.

01:26:07The first form of speaker

01:26:09was developed by Johann Philipp Reis

01:26:11in 1861.

01:26:13This German inventor self-taught

01:26:15to install the speaker on his phone.

01:26:17He was just able

01:26:19to reproduce suffocated words

01:26:21after a few revisions.

01:26:23Alexander Graham Bell,

01:26:25the inventor of the telephone,

01:26:27decided to try to produce

01:26:29an improved version

01:26:31of Reis' speaker.

01:26:33Basically, Bell and other inventors

01:26:35were trying to make

01:26:37an electrodynamic speaker.

01:26:39In 1877, it still didn't exist,

01:26:41but thanks to the desire

01:26:43of inventors from all over the world

01:26:45to change it,

01:26:46the work of Werner von Siemens,

01:26:48who had the idea

01:26:50of a coil electromagnetic speaker,

01:26:52was a driving force

01:26:54to reach this conclusion.

01:26:56Next question.

01:26:58Why are there magnets

01:27:00in speakers?

01:27:02Nowadays, all speakers

01:27:04are powered by an electric current,

01:27:06which inventors we mentioned

01:27:08would never have considered

01:27:10a given.

01:27:12When this electric current changes,

01:27:14it produces a magnetic field.

01:27:16The opposite magnetic field

01:27:18creates vibrations.

01:27:20These vibrations are the sound

01:27:22we end up hearing.

01:27:24The bigger the magnet,

01:27:26the louder the speaker.

01:27:28Another American inventor

01:27:30named Thomas Edison

01:27:32had filed a patent

01:27:34in the United Kingdom

01:27:36for a system using compressed air

01:27:38in an amplification mechanism.

01:27:40The first commercial electric speaker

01:27:42was born in 1924.

01:27:44The sound produced by this speaker

01:27:46was the sound of cinema.

01:27:48It took almost 20 years

01:27:50to see the next breakthrough

01:27:52in the world of speakers.

01:27:54This happened

01:27:56with the arrival of the Duplex Driver

01:27:58in 1943.

01:28:00It offered greater clarity

01:28:02and better coherence

01:28:04in high volumes,

01:28:06which was important

01:28:08in cinemas.

01:28:10This is why it was nicknamed

01:28:12the voice of cinema.

01:28:14The Duplex Driver

01:28:16was introduced in 1955.

01:28:18This design of speakers

01:28:20is still used today.

01:28:22Indeed,

01:28:24the film industry

01:28:26seems to make a lot of effort

01:28:28for its acoustics,

01:28:30just like the rooms

01:28:32in which we see films.

01:28:34You may have noticed

01:28:36that these rooms

01:28:38are often thick curtains

01:28:40on the walls.

01:28:42These are soundproof

01:28:44or acoustic curtains

01:28:46that allow them to absorb sound

01:28:48and reduce the acoustic reflection

01:28:50of the ceiling

01:28:52and the walls of the room.

01:28:54In the end,

01:28:56it creates a much better sound experience.

01:28:58It is for the same reason

01:29:00that the curtains are so thick

01:29:02in cinemas.

01:29:04They help to trap sound

01:29:06by providing an isolation

01:29:08from a practical point of view.

01:29:10This curtain is also there

01:29:12to prevent footsteps

01:29:14during the screening of films.

01:29:16By placing a speaker

01:29:18in a cup,

01:29:20the sound will appear louder.

01:29:22Any speaker placed

01:29:24or suspended in an open space

01:29:26projects its sound

01:29:28in all directions.

01:29:30When the speaker vibrates,

01:29:32to create sound waves,

01:29:34an equal amount of energy

01:29:36leaves the front and back.

01:29:38By placing a speaker

01:29:40in a form of speaker,

01:29:42a part of the energy

01:29:44coming from the back

01:29:46will be generated

01:29:48by the sound coming out of the cup.

01:29:50Speaking of phones and speakers,

01:29:52have you ever wondered

01:29:54why your mobile phone

01:29:56generates a buzz

01:29:58in your speaker?

01:30:00This can happen

01:30:02when the two gadgets

01:30:04are close to each other

01:30:06and your phone

01:30:08tries to send

01:30:10and receive data.

01:30:12The transfer of information

01:30:14produces electromagnetic disturbances

01:30:16in your phone.

01:30:18A simple way

01:30:20to avoid this annoying

01:30:22disturbance is to

01:30:24simply move your phone

01:30:26away from your speaker

01:30:28or vice versa.

01:30:30This will eliminate

01:30:32what are called

01:30:34electromagnetic interferences.

01:30:36Research conducted in the United States

01:30:38showed that on average

01:30:4074% of people

01:30:42had at least two pairs of headphones

01:30:44or two audio headphones.

01:30:46Some chose their headphones

01:30:48based on their appearance

01:30:50and others based on the sound quality.

01:30:52In both cases,

01:30:54finding the right gadget

01:30:56is important because many people

01:30:58are ready to spend

01:31:00more than a hundred euros on it.

01:31:02Headphones and other headphones

01:31:04have become real fashion accessories.

01:31:06This is why well-known personalities

01:31:08try to have an impact

01:31:10on this industry

01:31:12as if it were fashion.

01:31:14Music enthusiasts

01:31:16took a walk along the Pacific Ocean

01:31:18one day in 2006

01:31:20discussing a shoe business

01:31:22because they had received

01:31:24an offer from a major brand

01:31:26in this field.

01:31:28After a few discussions,

01:31:30they decided that they wanted

01:31:32to do something that they were

01:31:34more passionate about

01:31:36and decided on headphones.

01:31:38The idea of the duo

01:31:40turned into a brand

01:31:42bought by Apple in 2014

01:31:44for 3 billion dollars.

01:31:46This operation allowed Apple

01:31:48to take control of this sector.

01:31:50The release in 2016

01:31:52of their famous wireless headphones,

01:31:54the Airpods,

01:31:56made the company comfortable

01:31:58in this position.

01:32:00But how do these wireless headphones

01:32:02that many of us own

01:32:04really work?

01:32:06They actually depend on internal batteries

01:32:08to have enough power

01:32:10to stay wireless.

01:32:12Since then, they have

01:32:14integrated rechargeable batteries

01:32:16and receive signals transmitted

01:32:18wirelessly from their

01:32:20paired audio sources.

01:32:22Whether it's your phone

01:32:24or your laptop,

01:32:26these signals are coded

01:32:28by the device source

01:32:30and transmitted most often

01:32:32by radio frequencies

01:32:34or infrared supports.

01:32:36The headphones receive the signal

01:32:38and decode it in audio

01:32:40and you can enjoy your music

01:32:42in all freedom.

01:32:44When subjected to high pressure,

01:32:46the buckle tightens

01:32:48and the excess fabric

01:32:50can cushion the passengers.

01:32:52These few extra centimeters

01:32:54can make a big difference

01:32:56in the event of an accident.

01:32:58But it's different

01:33:00on the driver's side.

01:33:02As the latter is close to the steering wheel,

01:33:04it is safer for him

01:33:06not to have this buckle.

01:33:08Seatbelts were invented

01:33:10in the mid-19th century

01:33:11and in the 1960s.

01:33:13Pre-collision sensors

01:33:15have moved safety devices

01:33:17to a higher level.

01:33:19By predicting the collision

01:33:21of a car effectively,

01:33:23this technology orders the seatbelts

01:33:25to tighten automatically,

01:33:27to open the airbags

01:33:29and to activate the brakes

01:33:31to reduce the impact.

01:33:33Every year,

01:33:356 million car accidents

01:33:37occur in the United States.

01:33:39This is why we must continue

01:33:41to protect passengers

01:33:43more effectively.

01:33:45The materials used

01:33:47in the body

01:33:49began to be replaced

01:33:51during the last 25 years

01:33:53by aluminum and magnesium alloys

01:33:55to carbon fiber composites.

01:33:57These lighter materials

01:33:59not only save fuel,

01:34:01but also guarantee

01:34:03that the body

01:34:05offers a deformation zone.

01:34:07When a car hits an object,

01:34:09this zone absorbs

01:34:11the impact.

01:34:13But if this seems to cause

01:34:15more damage to the car,

01:34:17it actually protects

01:34:19the passengers better.

01:34:21Seatbelts are largely underestimated

01:34:23and since we have been using them,

01:34:25it would be difficult

01:34:27to imagine without them.

01:34:29Seatbelts were invented

01:34:31at the end of the 1800s.

01:34:33They have evolved so much

01:34:35that we no longer realize

01:34:37that we have them.

01:34:39But they are there,

01:34:42all the windows of your car

01:34:44are made of glass,

01:34:46but the windshield is designed

01:34:48to be unbreakable.

01:34:50It is leathered,

01:34:52so that whatever the impact,

01:34:54no glass shards are projected

01:34:56on the front seats.

01:34:58Normal glass was used

01:35:00until the 1950s,

01:35:02as vehicles evolved,

01:35:04modifications were made

01:35:06to ensure more safety.

01:35:08Airbags now seem

01:35:09to be a thing of the past.

01:35:11In fact, they were invented

01:35:13in 1968 and were ahead

01:35:15of their time.

01:35:17They then slowly

01:35:19gained popularity

01:35:21and eventually became

01:35:23mandatory on all cars

01:35:25from 1998.

01:35:27They have also evolved

01:35:29and are no longer limited

01:35:31to a simple airbag

01:35:33in the steering wheel.

01:35:35Today we can find them

01:35:37everywhere in the car

01:35:39and on the dashboard.

01:35:41They detect the moment

01:35:43when an impact occurs

01:35:45and trigger the airbags,

01:35:47which inflate in a few milliseconds.

01:35:49It can be difficult

01:35:51to anticipate the weather

01:35:53and the state of the roads.

01:35:55At the end of the 1960s,

01:35:57the ABS anti-skid system

01:35:59was put in place on cars.

01:36:01Before that,

01:36:03it was used on many planes,

01:36:05whose design dates back to 1908.

01:36:07It quickly became necessary

01:36:09to guarantee better grip

01:36:11on slippery surfaces

01:36:13and better control of the wheels

01:36:15during braking.

01:36:17Today, the ABS has advanced

01:36:19so much that the latest versions

01:36:21provide additional detection

01:36:23in the event of strong lateral winds.

01:36:25The speed regulator,

01:36:27invented in 1948,

01:36:29has not stopped evolving

01:36:31over the years.

01:36:33Today, the adaptive speed regulator

01:36:35means that when the car

01:36:37drives at a constant speed

01:36:39it adapts its speed to that speed.

01:36:41Other variants

01:36:43make sure that the car

01:36:45stops on its own

01:36:47if the vehicle in front of it

01:36:49makes a mistake.

01:36:51It is easy to forget

01:36:53to turn on the lights

01:36:55when driving for several hours.

01:36:57Automatic lights

01:36:59are becoming more and more common.

01:37:01Cameras determine

01:37:03the type of light in real time

01:37:05and help determine

01:37:07when the road lights

01:37:09are on.

01:37:11Since the 1950s,

01:37:13the old models

01:37:15used sensors sensitive to light

01:37:17and were much less reliable.

01:37:19New models can identify

01:37:21different sources of light,

01:37:23whether it is the sun,

01:37:25the direct light of a car

01:37:27coming in front of it

01:37:29or even the reflection of a panel,

01:37:31which allows you to adapt the lights

01:37:33and thus avoid disturbing

01:37:35other drivers.

01:37:37It is sometimes difficult

01:37:39to find the sun.

01:37:41The solar sensors

01:37:43located in the rear bumpers

01:37:45and the blind spot monitoring systems

01:37:47monitor the adjacent lanes.

01:37:49They alert the driver

01:37:51if a vehicle is on the lane next to it,

01:37:53whether by flashing lights

01:37:55on the dashboard

01:37:57or by beeps

01:37:59that reduce the danger.

01:38:011.6 million road accidents

01:38:03are caused by the use

01:38:05of a mobile phone while driving

01:38:07and fatigue is the cause

01:38:09of many accidents.

01:38:11The driver's attention

01:38:13monitoring system

01:38:15allows you to monitor all this.

01:38:17It works thanks to sensors

01:38:19that monitor the movements of the car

01:38:21and the number of corrections

01:38:23in the direction

01:38:25to ensure that the driver

01:38:27remains attentive.

01:38:29When the on-board computer

01:38:31identifies that the driver

01:38:33is not well awake

01:38:35or that he is distracted

01:38:37by his phone,

01:38:39the safety devices

01:38:41depend on them.

01:38:43This is why it is very important

01:38:45to ensure that your tires

01:38:47are always in perfect condition.

01:38:49The tire pressure control system

01:38:51checks the air pressure

01:38:53in the four tires

01:38:55and tells you when to increase

01:38:57or decrease the pressure

01:38:59to avoid any risk.

01:39:01The constant evolution of technology

01:39:03ensures your safety

01:39:05on long journeys.

01:39:07The white line crossing sensors

01:39:09tell you

01:39:11if the car deviates

01:39:13and approaches a non-blinking line,

01:39:15a camera identifies it

01:39:17and signals it to the driver.

01:39:19The lane assist function

01:39:21follows the same method

01:39:23to prevent the car

01:39:25from braking on the adjacent lane.

01:39:27If it gets too close,

01:39:29it automatically adjusts the direction

01:39:31to re-center the car on its lane.

01:39:33The most modern cars

01:39:35even have autonomous driving options.

01:39:37Automatic driving systems

01:39:39allow the vehicle

01:39:41to stay in its lane

01:39:43while maintaining its speed

01:39:45but also to change lanes

01:39:47when necessary.

01:39:49Some devices are gradually

01:39:51implemented in all car models.

01:39:53For example, the night vision system

01:39:55uses thermographic cameras

01:39:57to locate pedestrians and animals.

01:39:59It integrates with the on-board computer

01:40:01and identifies objects

01:40:03based on their thermal signature.

01:40:06There are more than 1.4 billion cars

01:40:07in traffic around the world.

01:40:09And as the world population increases,

01:40:11we expect the number of cars

01:40:13to increase as well.

01:40:16Safety systems are constantly evolving.

01:40:21Infrared headlights

01:40:23will soon be used

01:40:25in bad visibility conditions

01:40:27like storms, snow and fog.

01:40:29They will improve

01:40:31the driver's visibility

01:40:33in all conditions

01:40:35without affecting the other drivers' vision.

01:40:37By controlling the driver,

01:40:39they will soon be able

01:40:41to monitor and identify

01:40:43their various behaviours,

01:40:45whether while driving carelessly

01:40:47or for other safety reasons.

01:40:49Cars will soon be able

01:40:51to take control themselves,

01:40:53thus ensuring the safety

01:40:55of all passengers.

01:40:57Increased-reality windshields

01:40:59are being developed

01:41:01to display certain elements

01:41:03of the on-board computer

01:41:05on the windshield.

01:41:07So that they no longer

01:41:09block the road.

01:41:11Windshields will no longer

01:41:13only be used inside the cabin,

01:41:15but will also be activated

01:41:17from outside the car

01:41:19when they detect an imminent collision.

01:41:21They will cover the entire surface

01:41:23of the car to reduce the impact.

01:41:25This technology could be so advanced

01:41:27that the body

01:41:29would no longer need to be repaired.

01:41:32Future technologies

01:41:34should be so advanced

01:41:35that cars themselves

01:41:37will have their own forms of communication.

01:41:39Not with drivers,

01:41:41but with other cars.

01:41:43Imagine cars sharing information

01:41:45when they detect roadblocks,

01:41:47road problems

01:41:49or weather phenomena.

01:41:51All this will guarantee

01:41:53the most efficient route

01:41:55and a safer journey.

01:41:57Holes in certain types of cheese

01:41:59are not caused by chance.

01:42:01Gruyère, for example,

01:42:03is made by special bacteria

01:42:05that produce carbon dioxide.

01:42:07When CO2 is emitted,

01:42:09it inflates like a chewing gum bubble,

01:42:11leaving tiny craters

01:42:13that are also called

01:42:15cheese eyes.

01:42:17It is then cooled,

01:42:19but the holes remain there.

01:42:21More than 40 billion Oreos

01:42:23are made each year.

01:42:25It is the best-selling

01:42:27industrial biscuit in the world.

01:42:29The geometric pattern

01:42:31stamped on these biscuits

01:42:33has the Nabisco logo,

01:42:35which was the first to design

01:42:37this chocolate biscuit

01:42:39as we know it today,

01:42:41in 1952.

01:42:43If you use reusable bottles,

01:42:45you probably know

01:42:47that they sometimes tend to smell bad.

01:42:49Even if you only use them

01:42:51to put ordinary water in them,

01:42:53they still end up smelling.

01:42:55But it is not the water itself

01:42:57that releases this smell.

01:42:59It is the microorganisms it contains.

01:43:01If you drink water in a bottle,

01:43:03the particles of your saliva

01:43:05will enter the bottle,

01:43:07which generates this smell.

01:43:09If you choose reusable bottles,

01:43:11make sure to wash them every day

01:43:13to prevent bacteria from accumulating.

01:43:15After washing them,

01:43:17let them dry completely

01:43:19before reusing them.

01:43:21There are not only jeans that are blue.

01:43:23Police uniforms are also blue.

01:43:25The first police officers

01:43:27dressed like this

01:43:29appeared in London in the 19th century.

01:43:31They received this blue uniform

01:43:33to contrast with the red and white uniform

01:43:35in the United States.

01:43:37A few decades later,

01:43:39such police forces

01:43:41were adopted in the United States

01:43:43who followed the same model.

01:43:45The uniform is still blue today

01:43:47because this color has proven to be very effective.

01:43:49It blends into a nocturnal environment

01:43:51and police officers can observe

01:43:53what is happening without being noticed.

01:43:55In addition,

01:43:57stains are not too visible

01:43:59on dark fabrics.

01:44:01And then everyone knows

01:44:03that police officers wear blue

01:44:05because they are blue.

01:44:07The carrots are tiny

01:44:09and unlike ordinary carrots,

01:44:11they are wet,

01:44:13which is reminiscent

01:44:15of our little human babies.

01:44:17These mini carrots

01:44:19are not special carrots.

01:44:21They are made from ordinary carrots

01:44:23by removing the skin

01:44:25and the outer layers

01:44:27and then rolling them

01:44:29to make them look prettier.

01:44:31The problem is

01:44:33that they can no longer retain moisture.

01:44:35This is why they are generally

01:44:37sold in plastic bags

01:44:39containing a little water.

01:44:41Jeans are provided with metal rivets

01:44:43and have always been.

01:44:45Jacob Davis,

01:44:47the man who made the first pair of jeans,

01:44:49added copper rivets

01:44:51to the places where the pants

01:44:53are most likely to tear,

01:44:55namely the bracket and the pockets

01:44:57to make them more resistant.

01:44:59Today, the rivets

01:45:01rather fulfill a decorative function

01:45:03because they are a traditional feature

01:45:05of these small pockets

01:45:07which are apparently useless.

01:45:09This may be the case today,

01:45:11but years ago,

01:45:13when jeans were particularly

01:45:15loved by cowboys,

01:45:17this small pocket was specially designed

01:45:19to store a watch.

01:45:21In addition, at the time,

01:45:23a jean had only four pockets.

01:45:25This tiny pocket,

01:45:27the watch pocket,

01:45:29two large pockets at the front

01:45:31and one pocket at the back.

01:45:33Car headrests are a matter of comfort

01:45:35and safety.

01:45:37If you remove a headrest,

01:45:39you will see two solid metal bars.

01:45:41If you ever find yourself locked up

01:45:43or trapped in a vehicle,

01:45:45you can use these bars

01:45:47to break the glass and escape.

01:45:49These little red spots

01:45:51that you sometimes see

01:45:53after breaking an egg

01:45:55are not worrisome.

01:45:57These tiny blood stains

01:45:59can be caused by the rupture

01:46:01of a small blood vessel

01:46:03in the hen when she laid her egg.

01:46:05If this bothers you,

01:46:07it won't affect the taste of the egg.

01:46:09In the Toblerone logo

01:46:11and its famous mountain,

01:46:13there is the image of a bear

01:46:15standing on its hind legs

01:46:17and about to devour this yodeler over there.

01:46:19No, I'm kidding.

01:46:21This is explained by the fact

01:46:23that bears were very present

01:46:25on the side of Bern,

01:46:27one of the largest cities in Switzerland,

01:46:29where its founder created

01:46:31the famous chocolate triangle snack.

01:46:33Toblerone is also based

01:46:35on the Italian word torrone,

01:46:37which refers to a nougat with honey

01:46:39and almonds.

01:46:41The space under a nougat

01:46:43is used to protect it

01:46:45during transport.

01:46:47This technique is called

01:46:49intermediate suspension.

01:46:51Not only are nougats better protected

01:46:53in their polystyrene nougats,

01:46:55but they also soften more quickly

01:46:57and in a more uniform way.

01:46:59You probably thought that this hole

01:47:01in the body of a pen had no reason to be,

01:47:03and yet there is one.

01:47:05In this way,

01:47:07an equal pressure of air

01:47:09is created inside and outside the pen,

01:47:11which allows the ink

01:47:13to flow easily into the tip.

01:47:15It is not a coincidence

01:47:17that soy sauce bottles

01:47:19have two beakers.

01:47:21The sauce is very liquid

01:47:23and flows out of the bottle

01:47:25quite quickly as soon as it is turned over.

01:47:27Most Asian cuisine lovers

01:47:29will admit having spilled it

01:47:31everywhere at least once in their life.

01:47:33This is why, nowadays,

01:47:35there are special nougats

01:47:37with two beakers.

01:47:39This design allows you to control

01:47:41the flow of sauce that flows.

01:47:43You just have to put your finger on a beaker

01:47:45while you pour the sauce over the other.

01:47:47If you press your finger hard on it,

01:47:49the sauce will automatically stop flowing.

01:47:51And if you remove it,

01:47:53it will flow again.

01:47:55Now, I challenge you

01:47:57to get your fingers in your nose.

01:47:59You probably noticed that the seats

01:48:01of trains and buses

01:48:03were covered with tissue

01:48:05on the seats.

01:48:07The brighter the color

01:48:09and the more motifs there are,

01:48:11the more difficult it will be

01:48:13for a passenger to notice

01:48:15these disgusting stains.

01:48:17In addition, these motifs

01:48:19are generally so ugly

01:48:21that no one wants to look at them

01:48:23long enough to reveal anything.

01:48:25So yes, the motif is there

01:48:27to make you look away

01:48:29and if you look at it,

01:48:31to make it less visible.

01:48:33No bus will ever have

01:48:35such a dirty nose.

01:48:37And it is possible to slip a straw in it,

01:48:39which prevents you from having to

01:48:41constantly put it back in place.

01:48:43This toothpick replaced the pin

01:48:45created in the early 1960s.

01:48:47You remember, don't you?

01:48:49It could be very pointy

01:48:51and easily pose a threat

01:48:53to the people in charge

01:48:55of sorting the waste.

01:48:57Now, you can insert your straw

01:48:59directly into one of them.

01:49:01This also means that you can

01:49:03produce bubbles at will

01:49:05from the plastic

01:49:07containing an additional button

01:49:09as well as a piece of fabric.

01:49:11If the fabric is used

01:49:13to plug holes,

01:49:15it can also be used

01:49:17to test the effects

01:49:19of various detergents

01:49:21on certain surfaces.

01:49:23It is also practical

01:49:25to test the washing cycles

01:49:27of your machine

01:49:29before using them

01:49:31to wash the entire garment.

01:49:33Mechanical stairs

01:49:35can be dangerous places.

01:49:37People don't always pay attention

01:49:39and sometimes clothes get stuck

01:49:41near the point where the step

01:49:43meets the edge of the staircase.

01:49:45This brush is a small barrier

01:49:47that avoids this.

01:49:49It also helps to catch the plushies

01:49:51and prevent other small objects

01:49:53from falling into the interstices.

01:49:55The dishes containers

01:49:57that are most often associated

01:49:59with Chinese restaurants

01:50:01are designed not only

01:50:03to bring the dishes home

01:50:05but also to serve as plates

01:50:07since it is possible

01:50:09to eat directly inside

01:50:11without having to worry

01:50:13about dirtying your dishes.

01:50:15Yes, that's right.

01:50:17They were patented in 1894

01:50:19to transport freshly chopped oysters

01:50:21and were known overseas

01:50:23under the name of Oyster Pails.

01:50:25They were then adapted

01:50:27to serve as watertight containers

01:50:29for food.

01:50:31Have you ever wondered

01:50:33why the coins had

01:50:35such small holes in them?

01:50:37The steam from the oysters

01:50:39could easily reject the stops

01:50:41to melt new gold or silver pieces

01:50:43and take advantage of them.

01:50:45These strays were created

01:50:47to make it much easier

01:50:49to distinguish the pieces

01:50:51that had been altered.

01:50:53It is no longer necessary today

01:50:55but the pieces still have this style.

01:50:57All crackers and some biscuits

01:50:59have small holes in the middle

01:51:01to ensure that the final product

01:51:03will have the right texture.

01:51:05If it was inside

01:51:07and the final result

01:51:09was succulent,

01:51:11it would have a rather strange shape.

01:51:13Dogs like to turn around

01:51:15before going to sleep

01:51:17because they inherited

01:51:19this behavior from their ancestors.

01:51:21At the time,

01:51:23there was no well-fed basket

01:51:25for the doggies

01:51:27and most of them

01:51:29had to push the tall grass

01:51:31to create a small corner

01:51:33to crawl.

01:51:35If there were no holes in the middle,

01:51:37the dough would never be cooked enough.

01:51:39In addition,

01:51:41they are often associated

01:51:43with the American police

01:51:45because in the 1950s,

01:51:47the donut shops

01:51:49were one of the rare places

01:51:51to stay open late at night.

01:51:53It was the ideal place

01:51:55for the policemen

01:51:57who wanted to nibble a piece

01:51:59or even take care of the paper

01:52:01during their night shift.

01:52:03If your jean is blue on the outside

01:52:05it has no color,

01:52:07it is simply white.

01:52:09In this way,

01:52:11manufacturers reduce

01:52:13the amount of dye needed

01:52:15for each garment.

01:52:17It is not as if they were gold-plated.

01:52:19The cylinder at the end of a cable

01:52:21is placed there

01:52:23and seems totally useless.

01:52:25In fact,

01:52:27it is a ferrite pearl

01:52:29that is associated

01:52:31with many electrical wires

01:52:33to reduce electromagnetic interference.

01:52:35There is a reason

01:52:37why the tray inside the microwave

01:52:39is circular.

01:52:41A circular object

01:52:43evenly distributes heat

01:52:45unlike rectangular or square objects.

01:52:47When you place containers

01:52:49with these shapes inside,

01:52:51the energy is concentrated in the corners

01:52:53instead of being evenly distributed

01:52:55like in a round container.

01:52:57The temperature gauge of a bread grill

01:52:59is generally used

01:53:01to determine the degree of cooking of the pies.

01:53:03But the other more specific use

01:53:05of the gauge

01:53:07is that of different types of bread.

01:53:09White and sweet breads

01:53:11heat up much faster

01:53:13than brown and rye breads

01:53:15that are heavier.

01:53:17The older the bread,

01:53:19the more time it will need

01:53:21in the bread grill

01:53:23to get the golden result you are looking for.

01:53:25Most ovens

01:53:27offer you the possibility

01:53:29to leave the door open

01:53:31when you grill a dish inside.

01:53:33You probably think

01:53:35that you want to cook the top

01:53:37and ensure a crispy layer.

01:53:39By controlling the accumulation

01:53:41of heat and steam

01:53:43by releasing it through the slightly open door,

01:53:45you get the desired result

01:53:47without cooking the whole dish

01:53:49until it is crispy.

01:53:51You probably noticed

01:53:53that your dishwasher

01:53:55has specific areas

01:53:57for different types of covers

01:53:59and dishes.

01:54:01But all dishware items

01:54:03must be oriented towards the center

01:54:05in the cabinets.

01:54:07As the center of the machine

01:54:09receives the strongest gel,

01:54:11the glucid-based stains

01:54:13from tomatoes and potatoes

01:54:15must be placed here.

01:54:17The detergent is more concentrated

01:54:19on the outside during cleaning,

01:54:21which creates a cascade-like cleaning.

01:54:23This is why protein-based stains

01:54:25such as those of eggs

01:54:27must be placed here.

01:54:29The ceiling fans

01:54:31push the fresh air down

01:54:33when it is hot,

01:54:35and can be used in winter

01:54:37just as efficiently

01:54:39if you engage the switch on the side

01:54:41or if you use the pull.

01:54:43So if you want to save money

01:54:45on heating

01:54:47and try to heat your room quickly

01:54:49on a cold day,

01:54:51put the fan in motion.

01:54:53It will push the air up

01:54:55and spread the hot air around you,

01:54:57thus heating the room more efficiently.

01:54:59Do you still use post-it notes

01:55:01instead of these new sophisticated applications

01:55:03on all imaginable devices?

01:55:05In fact,

01:55:07they always end up falling.

01:55:09If you have already encountered this problem,

01:55:11it is because you took them off

01:55:13from the bottom to the top.

01:55:15It is this way of doing things

01:55:17that causes the post-it notes.

01:55:19By taking them off on the side,

01:55:21you make sure they stay flat

01:55:23and ready to remind you

01:55:25of your daily tasks.

01:55:27Did you know that open boxes

01:55:29were invented only 50 years

01:55:31after tin boxes became commonplace?

01:55:33So how was it possible

01:55:35to get rid of your faithful open box?

01:55:37All you need

01:55:39is a metal spoon.

01:55:41Place the box on the worktop,

01:55:43hold it firmly

01:55:45and hold the spoon's head.

01:55:47Apply pressure

01:55:49and rub the edge of the lid

01:55:51of the box on a small surface.

01:55:53This takes time,

01:55:55but by rubbing,

01:55:57a small notch is formed

01:55:59and soon turns into a hole.

01:56:01Once the hole is wide enough

01:56:03to pass the tip of the spoon,

01:56:05you can finally access

01:56:07the meal it contains.

01:56:09You have won!

01:56:11Most toilets depend

01:56:13on the pressure of the water

01:56:15and the gravity to function.

01:56:17A power failure

01:56:19will not affect them.

01:56:21But if yours need electricity

01:56:23to function,

01:56:25you should be worried

01:56:27about their use

01:56:29in case of a power failure.

01:56:31The good news

01:56:33is that electricity

01:56:35can save you

01:56:37a few liters

01:56:39and you can evacuate

01:56:41everything you need.

01:56:43The nozzles in the shower

01:56:45are produced over a long period.

01:56:47It is inevitable.

01:56:49We lose 50 to 100 hairs a day

01:56:51and many of them

01:56:53try to settle

01:56:55in our shower nozzles.

01:56:57The hair is the main

01:56:59obstruction,

01:57:01which encourages

01:57:03the accumulation

01:57:05of air around the tip

01:57:07so that the air

01:57:09cannot escape.

01:57:11The vacuum cleaner

01:57:13can vacuum

01:57:15things that obstruct

01:57:17much more easily.

01:57:19You will thus avoid

01:57:21the plumber's costs

01:57:23who use this technique themselves.

01:57:25To make your candles

01:57:27last longer,

01:57:29cut their wick

01:57:31several times

01:57:33and keep them

01:57:35in the oven.

01:57:37You can use a brush

01:57:39to clean the glass

01:57:41of the oven door.

01:57:43It is easy to access

01:57:45this space

01:57:47by opening the lower part

01:57:49and pushing the brush

01:57:51into the hole.

01:57:53When you park in a garage,

01:57:55you can have trouble

01:57:57determining

01:57:59how far you should be.

01:58:01All cars

01:58:03do not have sensors

01:58:05to tell you

01:58:07how far to park

01:58:09compared to the wall.

01:58:11We have all been told

01:58:13to unlock a lock

01:58:15with WD-40

01:58:17or lubricant.

01:58:19Yes, we all know

01:58:21that we should have some at home.

01:58:23But if you don't have any,

01:58:25an excellent alternative

01:58:27is to draw along the edges

01:58:29of the key

01:58:31with a gray pencil

01:58:33and insert it

01:58:35into the hole.

01:58:37The pliers

01:58:39can damage the taps

01:58:41and shower heads

01:58:43when you use them

01:58:45to repair them

01:58:47and they are also

01:58:49difficult to grab.

01:58:51Take two pieces

01:58:53of an old watering pipe

01:58:55and attach them

01:58:57to the pliers.

01:58:59You will notice

01:59:01a huge improvement

01:59:03in grip

01:59:05compared to a simple rubber.

01:59:07Place a piece

01:59:09in the handle of the screwdriver

01:59:11and it will have a much better grip.

01:59:13Moving cement blocks

01:59:15is not safe for the lower back.

01:59:17Even with a wheelbarrow,

01:59:19it can be risky

01:59:21to drop the cement on the ground

01:59:23without causing damage.

01:59:25Three simple cylinder-shaped pipes

01:59:27can make all the difference,

01:59:29no matter the size of the block.

01:59:31Try to lift the edge of the first pipe

01:59:33with a lever,

01:59:35towards the desired place.

01:59:37Just make sure

01:59:39you don't do it in a slope.

01:59:41The first time you plant a nail,

01:59:43it can be a great success

01:59:45or a really deadly thumb.

01:59:47A hair clip

01:59:49has the perfect shape

01:59:51to keep the nail in place,

01:59:53which allows your hand

01:59:55to be safe from danger

01:59:57and to hit the nail without fear.

01:59:59Use a pencil

02:00:01instead of a pen or a pencil

02:00:03when you work with a circular saw

02:00:06Check the pipes on the roof

02:00:08and determine when they need to be cleaned

02:00:10can take a long time.

02:00:12Use tape to attach a mirror

02:00:14to the end of a long broom

02:00:16and check if the gutters

02:00:18need to be cleaned.

02:00:20To help you keep your balance

02:00:22when examining the gutters,

02:00:24attach an old pair of sports shoes

02:00:26to the foot of the ladder.

02:00:28The distance between the shoe

02:00:30and its grip

02:00:32will provide an additional level of safety.

02:00:33The gutters are usually

02:00:35in the shape of huge tubes

02:00:37so that you can never use them

02:00:39all at once.

02:00:41The hard tips of the liquid

02:00:43create nozzles.

02:00:45Take a used cork nozzle

02:00:47and drill it to make a perfect lid

02:00:49that covers the liquid mastic.

02:00:51It is now ready to be used again

02:00:53without any blocking.

02:00:55Have you ever vibrated in your room

02:00:57while listening to some of your favorite songs

02:00:59and admiring the bass of your speaker

02:01:00while it revives your eardrums

02:01:02at high decibels?

02:01:04And have you ever wondered

02:01:06why this same speaker

02:01:08as well as so many other speakers

02:01:10around the world

02:01:12are almost always black?

02:01:14Some of you are probably

02:01:16screaming on your screens

02:01:18right now to say

02:01:20that their speakers are green, red

02:01:22or any other color of the rainbow.

02:01:24First, we said almost always

02:01:26and then if you look carefully

02:01:28at the beautiful design

02:01:30you will see that the bottom

02:01:32is always black.

02:01:34One possible explanation for this

02:01:36is that the original technology

02:01:38had a diaphragm

02:01:40with black particles on it.

02:01:42So as soon as a sound is amplified

02:01:44it sends a charge through the diaphragm

02:01:46and these black particles

02:01:48are pushed upwards.

02:01:50The carbon particles that bounce

02:01:52and touch the upper membrane

02:01:54of the diaphragm

02:01:56are responsible for the creation

02:01:58of some of the distinct sounds

02:02:00in case of prolonged use

02:02:02and to see these black particles

02:02:04land on the upper membrane

02:02:06of the diaphragm.

02:02:08Their logical solution

02:02:10was to color most of the speakers

02:02:12in black.

02:02:14Another practical reason

02:02:16why speakers are most often

02:02:18colored in black

02:02:20is that it is a color

02:02:22that fits easily

02:02:24with many types of decor.

02:02:26Walls, furniture and clothes

02:02:28are often raised

02:02:30in black.

02:02:32Listening to music

02:02:34has been ranked

02:02:36several times

02:02:38in the top 10

02:02:40of our favorite pastimes

02:02:42around the world.

02:02:44Nowadays we find speakers

02:02:46everywhere,

02:02:48in your television,

02:02:50your laptop and your phone.

02:02:52You can't escape them

02:02:54but let's see

02:02:56how it all started.

02:02:58Their origins are

02:03:00well-known.

02:03:02In 1877,

02:03:04a man named Alexander Graham Bell

02:03:06invented the speaker

02:03:08on his phone.

02:03:10He was just able

02:03:12to reproduce clear tones

02:03:14but he could also reproduce

02:03:16muffled words

02:03:18after a few revisions.

02:03:20Alexander Graham Bell,

02:03:22the inventor of the phone,

02:03:24decided to try

02:03:26to produce an improved version

02:03:28of the RISE speaker.

02:03:30He thought it was possible

02:03:32to make one.

02:03:34In particular,

02:03:36the work of Werner von Siemens,

02:03:38who had the idea

02:03:40of a coil electromagnetic speaker,

02:03:42was a driving force

02:03:44to come to this conclusion.

02:03:46Next question.

02:03:48Why are there magnets

02:03:50in speakers?

02:03:52Nowadays,

02:03:54all speakers are powered

02:03:56by an electric current

02:03:58which the inventors

02:04:00have invented.

02:04:02To move the speaker panel,

02:04:04magnets are used

02:04:06to create an opposite magnetic field

02:04:08which creates vibrations.

02:04:10These vibrations are the sound

02:04:12we end up hearing.

02:04:14The bigger the magnet,

02:04:16the louder the speaker.

02:04:18Another American inventor

02:04:20named Thomas Edison

02:04:22had issued a patent

02:04:24to the United Kingdom

02:04:26for a system using compressed air

02:04:28in an amplification mechanism.

02:04:30But the results of this speaker

02:04:32were good enough

02:04:34for cinema.

02:04:36It took 20 years

02:04:38to see the next breakthrough

02:04:40in the world of speakers.

02:04:42This happened

02:04:44with the arrival of the Duplex Driver

02:04:46in 1943.

02:04:48It offered greater clarity

02:04:50and better coherence

02:04:52in high volumes,

02:04:54which was important

02:04:56in cinemas.

02:04:58This is why it was nicknamed

02:05:00the Cinematographic Industry

02:05:02in 1955.

02:05:04This concept of speakers

02:05:06is still used today.

02:05:08Indeed,

02:05:10the cinematographic industry

02:05:12seems to make a lot of effort

02:05:14for its acoustics,

02:05:16just like the rooms

02:05:18in which we see movies.

02:05:20You may have noticed

02:05:22that these rooms

02:05:24are often thick curtains

02:05:26on the walls.

02:05:28These are soundproof

02:05:30or have better quality covers.

02:05:32This allows them

02:05:34to absorb the sound

02:05:36and reduce the acoustic reflection

02:05:38of the ceiling

02:05:40and the walls of the room.

02:05:42In the end,

02:05:44it creates a much better

02:05:46sound experience.

02:05:48It is for the same reason

02:05:50that the carpets are so thick

02:05:52in cinemas.

02:05:54They help to trap the sound

02:05:56by providing an isolation

02:05:58from a practical point of view.

02:06:00This is also the reason

02:06:02why putting a phone in a cup

02:06:04makes the sound appear louder.

02:06:06Any speaker placed

02:06:08or suspended in an open space

02:06:10projects its sound

02:06:12in all directions.

02:06:14When the speaker vibrates

02:06:16to create sound waves,

02:06:18an equal amount of energy

02:06:20goes from the front and back.

02:06:22By placing a speaker

02:06:24in a form of speaker,

02:06:26you can redirect some of the energy

02:06:28coming from the back of the speaker

02:06:30to the front of the speaker.

02:06:32It only travels in one direction

02:06:34which makes it sound louder

02:06:36than what you would hear

02:06:38when taking it out of the cup.

02:06:40Speaking of phones and speakers,

02:06:42have you ever wondered

02:06:44why your mobile phone

02:06:46generates a buzz in your speaker?

02:06:48This can happen

02:06:50when two gadgets are close

02:06:52to each other

02:06:54and your mobile phone

02:06:56tries to send and receive data.

02:06:58Information transfer

02:07:00means you can hear

02:07:02the buzz coming from your speakers.

02:07:04A simple way to avoid

02:07:06this annoying buzz

02:07:08is to simply move your phone

02:07:10away from your speaker

02:07:12or vice versa.

02:07:14This will eliminate

02:07:16what we call electromagnetic interference.

02:07:18Research conducted in the United States

02:07:20showed that on average

02:07:2274% of people

02:07:24had at least two pairs of headphones

02:07:26or two audio headsets.

02:07:2846% of them mentioned

02:07:30more than two hours a day.

02:07:32Some chose their headphones

02:07:34based on their appearance

02:07:36while others based on sound quality.

02:07:38In both cases,

02:07:40finding the right gadget is important

02:07:42because many people are willing

02:07:44to spend more than 100 euros on it.

02:07:46Headphones and other headphones

02:07:48have become real fashion accessories.

02:07:50This is why celebrities

02:07:52try to have an impact

02:07:54on this industry

02:07:56as if it were fashion.

02:07:58Music enthusiasts Dr. Dre and Jimmy Yovine

02:08:00are now world-famous

02:08:02for their Beats by Dre headphones.

02:08:04They were walking along

02:08:06the Pacific Ocean

02:08:08one day in 2006

02:08:10discussing a shoe business

02:08:12because they had received

02:08:14an offer from a big brand

02:08:16in this field.

02:08:18After a few discussions,

02:08:20they decided they wanted

02:08:22to do something

02:08:24they were more passionate about

02:08:26and decided to sell their headphones.

02:08:28The idea of the duo

02:08:30was to control 70%

02:08:32of the headphones market

02:08:34at the time of the signing.

02:08:36This operation allowed Apple

02:08:38to take control of this sector.

02:08:40In 2016,

02:08:42the release of their famous wireless headphones,

02:08:44the Airpods,

02:08:46made the company comfortable

02:08:48in this position.

02:08:50But how do these wireless headphones

02:08:52that many of us own

02:08:54really work?

02:08:56They actually depend on internal batteries

02:08:58to have enough power

02:09:00to function properly

02:09:02thanks to AA or AAA standard batteries.

02:09:04They receive signals

02:09:06transmitted wirelessly

02:09:08from their hardware audio source.

02:09:10Whether it's your phone

02:09:12or your laptop,

02:09:14these signals are coded

02:09:16by the device source

02:09:18and transmitted most often

02:09:20by radio frequencies

02:09:22or infrared supports.

02:09:24The headphones receive the signal

02:09:26and decode it into audio

02:09:28and you can enjoy your music

02:09:30while listening to it.

02:09:32These headphones are usually

02:09:34dressed in orange

02:09:36because this color is visible

02:09:38even in bad weather.

02:09:40It is the most effective color

02:09:42to attract attention

02:09:44and alert people.

02:09:46No wonder that many security vests

02:09:48and signal cones

02:09:50are also orange.

02:09:52The stop sign

02:09:54has an eight-sided shape

02:09:56to help drivers

02:09:58easily recognize it

02:10:00when they see it.

02:10:02When the tires pass on these bands

02:10:04the noise and vibrations

02:10:06work like an alarm clock.

02:10:08There are magnetic locks

02:10:10on the fuel pumps

02:10:12in the service stations

02:10:14in case someone leaves

02:10:16with the gasoline gun

02:10:18still attached to its tank.

02:10:20In this case,

02:10:22the lock automatically

02:10:24detaches the hose.

02:10:26The gasoline forms a rainbow

02:10:28in a puddle of water

02:10:30and you get a rainbow.

02:10:32The triple handle of a jerry can

02:10:34is there to allow two people

02:10:36to carry it more easily

02:10:38and to distribute the liquid

02:10:40evenly.

02:10:42Gasoline cans often have

02:10:44a second hole

02:10:46that must also be opened

02:10:48before pouring the liquid.

02:10:50Air passage will prevent it

02:10:52from overflowing

02:10:54and therefore from wasting it.

02:10:56Most gasoline cans

02:10:58have two holes

02:11:00that allow the liquid

02:11:02to stick and spread

02:11:04on your clothes and on the floor.

02:11:06Another little thing

02:11:08that we often neglect

02:11:10is the tip of a can lid.

02:11:12Most tubes are usually sealed

02:11:14with a plastic film

02:11:16or an aluminum sheet

02:11:18and opening it with your nails

02:11:20is not the best idea.

02:11:22The tip on the can lid

02:11:24allows you to easily open

02:11:26even the most tightly sealed tube.

02:11:28You can use most screwdrivers

02:11:30in order to apply

02:11:32much less force than usual.

02:11:34You can also reach

02:11:36difficult areas more easily.

02:11:38Cameras are installed

02:11:40in shops, banks and hospitals

02:11:42to monitor everything.

02:11:44If something happens,

02:11:46you can call the police or the ambulance.

02:11:48The camera helps to resolve

02:11:50a lot of business.

02:11:52So why aren't there cameras

02:11:54in planes?

02:11:56The crew keeps order in the plane

02:11:58but they can't do anything

02:12:00because the cameras are useless.

02:12:02And after the flight,

02:12:04the passengers' statements

02:12:06work as well as the cameras'.

02:12:08So if the cameras are useless,

02:12:10why spend money on them?

02:12:12Water is very easy to clean

02:12:14because it has triangular molecules

02:12:16made up of an oxygen atom

02:12:18and two hydrogen atoms

02:12:20hence the H2O.

02:12:22These molecules have slightly different

02:12:24charges on their opposite sides

02:12:26a bit like magnets.

02:12:28This is why water easily attaches

02:12:30to individual houses

02:12:32with triangular roofs

02:12:34because it allows rain,

02:12:36snow and dead leaves

02:12:38to slide on the door.

02:12:40If all these things pile up

02:12:42on the roof of your house,

02:12:44one day it could collapse.

02:12:46When a storm approaches,

02:12:48the clouds seem to become dark.

02:12:50But it's only an illusion.

02:12:52The clouds at the end of a sunny day

02:12:54easily let the light through.

02:12:56They also diffuse all the colours

02:12:58of the light spectrum.

02:13:00The less they let the light through,

02:13:02the darker they appear.

02:13:04A good number of doors

02:13:06are made of brass, bronze

02:13:08or some copper alloys.

02:13:10These metals have an anti-germ effect.

02:13:12Bacteria spread much more slowly

02:13:14on them.

02:13:16They also get rid of microbes

02:13:18quite quickly, in a few hours.

02:13:20But that doesn't mean

02:13:22you shouldn't wash your hands.

02:13:24Diamonds have symmetrical shapes

02:13:26to show you their brilliance.

02:13:28At first, these precious stones

02:13:30take on a certain size

02:13:32and then become elegant pieces.

02:13:34Most of these stones

02:13:36have a round shape

02:13:38with slightly pointed corners.

02:13:40It's in this shape

02:13:42that diamonds shine the most.

02:13:44Why are there two holes

02:13:46in an electric socket?

02:13:48The left hole is negatively charged,

02:13:50the right hole is positively charged

02:13:52and the space below is the ground.

02:13:54Electricity must flow through the circuit.

02:13:56The current starts from the positive hole,

02:13:58goes through the charger

02:14:00and reaches the ground.

02:14:02Have you ever wondered

02:14:04what your jeans pocket was for?

02:14:06People used to wear

02:14:08buttoned-up watches.

02:14:10The pocket was designed for this.

02:14:12Today, no one wears

02:14:14this kind of watch anymore

02:14:16but the pocket is still there

02:14:18and you can slip small objects

02:14:20like a ring in it.

02:14:22In London, there are poles

02:14:24that look a bit like light bulbs

02:14:26but they don't have bulbs.

02:14:28Their official name is

02:14:30Explosive Malodorous Gas

02:14:32to avoid, let's say,

02:14:34unwanted consequences.

02:14:36Most kitchen scissors

02:14:38have metallic teeth

02:14:40that look like pliers

02:14:42in the middle between the handles.

02:14:44They can help you break nuts,

02:14:46crab shells and other hard objects.

02:14:48You can also use them

02:14:50to open jars and bottles

02:14:52or remove grass stems.

02:14:54Leather often looks dull to the eye

02:14:56because it is covered

02:14:58with tiny scratches and scratches.

02:15:00When you remove your shoes

02:15:02from a layer of wax,

02:15:04you fill in these tiny crevasses.

02:15:06The surface becomes smoother

02:15:08and the light rays bounce

02:15:10more uniformly.

02:15:12That's why leather

02:15:14has a brighter shade.

02:15:16The overlays are filled

02:15:18with a special semi-transparent

02:15:20fluorescent ink

02:15:22that can shine in low light.

02:15:24Yellow and light green shades

02:15:26are the most popular

02:15:28because they don't prevent

02:15:30light pollution.

02:15:32We make horse iron magnets

02:15:34because they increase

02:15:36the magnetic force.

02:15:38Colors are also important.

02:15:40The blue part indicates the south pole

02:15:42and the red part the north pole.

02:15:44Both poles work simultaneously

02:15:46and increase the attraction force.

02:15:48The 1 cm diameter hole

02:15:50in the doors of an elevator

02:15:52is a lock.

02:15:54If the doors are locked,

02:15:56an operator can manually open them

02:15:58by inserting a special key

02:16:00into the airlock.

02:16:02The airlock is made of 3 layers.

02:16:04The exterior window is extremely strong.

02:16:06It can withstand the air pressure

02:16:08during take-off and landing.

02:16:10The interior window,

02:16:12which is the closest to you,

02:16:14is made of less expensive material.

02:16:16It avoids any potential damage

02:16:18to the window.

02:16:20The hole itself is in the central window.

02:16:22It not only balances the pressure

02:16:24but also prevents the window

02:16:26from jamming.

02:16:28The mechanical stairs brushes

02:16:30prevent you from getting too close

02:16:32to the edge of the elevator.

02:16:34This way, your clothes or tie

02:16:36won't get stuck between the steps.

02:16:38You see the sun in yellow or orange

02:16:40because the atmosphere of our planet

02:16:42is full of colors like blue,

02:16:44green and purple.

02:16:46This is also why the sun looks

02:16:48warmer at sunrise and sunset.

02:16:50If you go to a store to buy oranges,

02:16:52you will probably find them

02:16:54in a red net.

02:16:56This is pure marketing

02:16:58and this color is not a random choice.

02:17:00If you go to a store to buy oranges

02:17:02in a red net,

02:17:04the oranges look more orange,

02:17:06more juicy and more attractive.

02:17:08So you are more likely to buy them.

02:17:10Lemons are generally sold

02:17:12in green net nets

02:17:14for the same reason.

02:17:16If you wrap them in red,

02:17:18they will look more orange.

02:17:20Green goes better with yellow

02:17:22and makes the color of the lemons

02:17:24stand out more.

02:17:26Mattress manufacturers

02:17:28produce a limited number

02:17:30of different patterns.

02:17:32They can be of the same quality

02:17:34but cost a different price.

02:17:36Most people will never know

02:17:38and will think that different patterns

02:17:40indicate a different quality.

02:17:42So when you buy,

02:17:44don't worry about the pattern.

02:17:46Almost all hotels have white bed sheets.

02:17:48They choose this color

02:17:50to show how high

02:17:52their standards of cleanliness are.

02:17:54The whiter the sheets,

02:17:56the more high-end the hotel looks.

02:17:58It is much easier to see

02:18:00the difference.

02:18:02Crackers are holes

02:18:04to prevent them from cracking

02:18:06and breaking during cooking.

02:18:08Without these holes,

02:18:10the steam would accumulate in the dough

02:18:12until it burst.

02:18:14If you look at the capsule

02:18:16of a soda bottle,

02:18:18you will notice that there is

02:18:20a plastic disc inside.

02:18:22It is used to seal the liquid

02:18:24and the gases so that the drink

02:18:26remains sparkling.

02:18:28The long neck of the bottle

02:18:30is used to keep it warm.

02:18:32It is difficult to see the dishes

02:18:34when they are in the microwave oven

02:18:36because of this black stain

02:18:38on the glass.

02:18:40But if it is there,

02:18:42it is to prevent the harmful waves

02:18:44from escaping.

02:18:46Acting like a shield of Faraday,

02:18:48it is used to protect you

02:18:50while ensuring adequate cooking

02:18:52of the food.

02:18:54Some products,

02:18:56like chips,

02:18:58contain up to 43% nitrogen.

02:19:00The nitrogen,

02:19:02the gas we breathe

02:19:04in contact with the chips,

02:19:06would induce a reaction

02:19:08that would quickly oxidize them.

02:19:10This phenomenon,

02:19:12called oxidation,

02:19:14bears its name.

02:19:16Nitrogen, on the other hand,

02:19:18is an inert gas

02:19:20that keeps food

02:19:22and prevents it from damaging

02:19:24during transport.

02:19:26Chips wrapped in an air cushion

02:19:28remain crispy

02:19:30because they are usually

02:19:32greasy and doughy.

02:19:34Marks on paper sheets

02:19:36are not used to write

02:19:38dates or lists.

02:19:40They were originally added

02:19:42to serve as a protection.

02:19:44At the time,

02:19:46rats were a real problem

02:19:48in houses,

02:19:50and paper was one of their main favorites.

02:19:52Marks were used

02:19:54as security devices.

02:19:56Rats would rather nibble

02:19:58on the white paper

02:20:00than on the paper.

02:20:02They were used

02:20:04to keep the candy in place.

02:20:06The water-filled confectionery

02:20:08would enter the hollow of the stick

02:20:10and, once solidified,

02:20:12keep the paper in place.

02:20:14In this process,

02:20:16it would be more fragile

02:20:18and would come off easily.

02:20:20Vacuum cleaners have a lot of accessories,

02:20:22but what is the purpose

02:20:24of this long brush?

02:20:26It is useful for dusting,

02:20:28and its shape is perfect

02:20:30for washing clothes.

02:20:32What is the difference

02:20:34between a wooden belt

02:20:36and a plastic belt?

02:20:38Not only does a cedar wooden belt

02:20:40allow you to match the shape of your clothes,

02:20:42but it also repels mites

02:20:44and other insects.

02:20:46Salt is not only useful in the kitchen.

02:20:48It can get rid of strong odors.

02:20:50Rubbing salt on your fingers

02:20:52after chopping garlic

02:20:54should get rid of the smell,

02:20:56and it also works for shoes.

02:20:57It is used to clean

02:20:59all these annoying crumbs.

02:21:01If you can't get chocolate out of the box,

02:21:03look at these little holes next to it.

02:21:05They are there to help you.

02:21:07If you press one of these holes,

02:21:09the chocolate will come out easily.

02:21:11When you drink a sip of coffee

02:21:13in a cup with a lid,

02:21:15the pressure in the cup decreases

02:21:17and the air tries to enter.

02:21:19The little hole on the lid

02:21:21allows the air to circulate

02:21:23and the drink can flow

02:21:25smoothly through the main opening.

02:21:27This little pressure

02:21:29on the top of the lids

02:21:31is used to inform the staff

02:21:33and the customers

02:21:35about the contents of the cups

02:21:37in order to differentiate them.

02:21:39There is a legend

02:21:41about each little hole.

02:21:43You just have to look at the hole

02:21:45to know what it corresponds to.

02:21:47The numbers on the fruit labels

02:21:49give us information

02:21:51about how they were grown.

02:21:53If there are four numbers,

02:21:55the first one is a 4 or a 3,

02:21:57it is a biological crop.

02:21:59If there are five numbers,

02:22:01the first one is an 8,

02:22:03it has undergone genetic modifications.

02:22:05When you are on your way to your car

02:22:07after you have finished

02:22:09and packed all your groceries,

02:22:11use the hooks on the cart

02:22:13to hang the bags.

02:22:15This way, the most fragile items

02:22:17like bread, eggs, fruits and vegetables

02:22:19will not be crushed

02:22:21by the heavier products.

02:22:23If you have no one with you

02:22:25to help you hold your tape measure,

02:22:27place your nail

02:22:29at the level of the dedicated hole

02:22:31where the tape measures are usually placed

02:22:33and you just have to unroll it.

02:22:35The McFlurry square spoon

02:22:37is designed to easily mix

02:22:39the fillings with the ice.

02:22:41It attaches directly to a machine

02:22:43and starts spinning.

02:22:45The external padlocks

02:22:47wear out quickly due to the rain.

02:22:49You see this little hole down there?

02:22:51It is used to pour engine oil.

02:22:53This trick allows the mechanism

02:22:55to be lubricated

02:22:57when you tap on the bottom of the ketchup bottle

02:22:59but nothing comes out.

02:23:01Here is a little trick.

02:23:03Put the bottle diagonally

02:23:05and tap in the middle of the neck.

02:23:07In many fast food restaurants,

02:23:09customers have folded paper cups

02:23:11to use ketchup or mustard.

02:23:13Ready for the scoop?

02:23:15These little ramekins

02:23:17are actually supposed to unfold

02:23:19to become real little paper dishes

02:23:21that can contain much more sauce.

02:23:23The little hole on the handle of the pans

02:23:25or pans is not only used

02:23:27to store food.

02:23:29Place the end of the handle

02:23:31of the utensil you are using

02:23:33in this hole.

02:23:35It will be held above the preparation

02:23:37that is being cooked

02:23:39and will avoid splinters.

02:23:41The colored hairs of a toothbrush

02:23:43are there to tell us

02:23:45when it is necessary to change them.

02:23:47If you notice that these hairs

02:23:49are considerably pale,

02:23:51change your toothbrush

02:23:53or just your head

02:23:55depending on the case.

02:23:57They also allow the water

02:23:59to evaporate faster

02:24:01and allow the air to escape

02:24:03while the water flows.

02:24:05Most of the metal shutters

02:24:07have a hidden locking system

02:24:09that can spare you

02:24:11from awkward moments

02:24:13like an open bracket.

02:24:15Don't let the handle go up.

02:24:17If you lower the handle,

02:24:19the shutter will lock automatically.

02:24:21All thanks to these little notches

02:24:23placed under the handle.

02:24:25Fermented milk produces gases

02:24:27if the milk turns and produces gases.

02:24:29This part of the bottle will inflate

02:24:31and the concave shape becomes convex.

02:24:33The same thing will happen

02:24:35if you put the can in the freezer.

02:24:37The solidified milk takes up more space

02:24:39than the liquid form.

02:24:41The foam bath is not only made

02:24:43to have fun and feel good.

02:24:45It also regulates the temperature.

02:24:47The bubbles maintain the heat of the water

02:24:49and you can enjoy your bath longer.

02:24:51However, this only works

02:24:53for acrylic baths.

02:24:55Those made of metal

02:24:57can be used in all cases.

02:24:59Many cups and mugs

02:25:01have small grooves on the bottom.

02:25:03This is designed for dishwashers.

02:25:05They allow water to flow

02:25:07and thus avoid getting everywhere

02:25:09when you get out of the dishwasher.

02:25:11These grooves help to circulate the air

02:25:13so that the cup does not crack

02:25:15even if the tea is boiling.

02:25:17The small tips in the cream tube caps

02:25:19are also useful.

02:25:21Most of the tubes are sealed

02:25:23with aluminum.

02:25:25It is impossible to pierce

02:25:27even the most resistant ones.

02:25:29The escalator brushes

02:25:31are not used to clean and polish

02:25:33your shoes by the way.

02:25:35Applying wax on a moving escalator

02:25:37can be complex.

02:25:39These brushes are there

02:25:41for safety reasons

02:25:43by preventing users

02:25:45from approaching the edge of the steps.

02:25:47They reduce the risk

02:25:49that the bottom of a long coat

02:25:51or a pants are stuck

02:25:53between the steps.

02:25:55All tic-tac boxes

02:25:57should be shaken

02:25:59gently and opened.

02:26:01You will see that there is only one candy

02:26:03in the lid hole.

02:26:05If you shake the box

02:26:07until it is full

02:26:09it means that you do not know

02:26:11how to eat tic-tac.

02:26:13Originally, the pompom on the caps

02:26:15was not just a fashion accessory.

02:26:17It prevented sailors

02:26:19from hitting their heads

02:26:21on the typically low ceilings

02:26:23of ships.

02:26:25More than 40 billion Oreo biscuits

02:26:27are the logo of Nabisco

02:26:29a symbol of European quality

02:26:31which is the origin of the word Oreo.

02:26:33It was in 1952

02:26:35that William Tournier

02:26:37created the chocolate biscuit design

02:26:39that we know today.

02:26:41Wireless headphones

02:26:43could soon belong to the past

02:26:45because of wireless technology.

02:26:47But if you still have some

02:26:49you may have noticed the rings

02:26:51on the headphones.

02:26:53One ring symbolizes a mono sound

02:26:55two rings symbolize a stereo sound

02:26:57and the iconic rings

02:26:59orange, red, purple, yellow

02:27:01and lime green

02:27:03of Froot Loops cereals

02:27:05hide a secret.

02:27:07They do not represent different fruit flavors.

02:27:09All these rings have the same fruit flavors

02:27:11mixed together.

02:27:13The colors are just there to make it pretty.

02:27:15The E of Dell's logo

02:27:17is tilted because the founder

02:27:19Michael Dell

02:27:21wanted his technology

02:27:23to reverse the world.

02:27:25A compass uses magnets

02:27:27to point to the North

02:27:29because the North and the South are attracted.

02:27:31The South magnetic pole of the Earth

02:27:33is close to the geographical North

02:27:35while the North magnetic pole

02:27:37is close to the geographical South of the Earth.

02:27:39Confusing, isn't it?

02:27:41These little red spots that you sometimes see

02:27:43after breaking an egg

02:27:45should not worry you.

02:27:47The tiny blood stains

02:27:49can be caused by a small rupture

02:27:51of a blood vessel of the hen

02:27:53while she laid the egg.

02:27:55Eggs with these blood stains

02:27:57will not affect the taste of the egg.

02:27:59Ketchup is a word from many cultures

02:28:01including China,

02:28:03Malaysia and Indonesia.

02:28:05It originally meant

02:28:07a marinated fish sauce.

02:28:09Ketchup is also an acceptable spelling

02:28:11even if ketchup

02:28:13is the most popular way

02:28:15to spell it today.

02:28:17The Airbnb logo

02:28:19is not a folded trombone

02:28:21as it may seem at first glance.

02:28:23The BELO, as it is called for belonging,

02:28:25means more than that

02:28:27it is a location

02:28:29and a heart for love.

02:28:31All together,

02:28:33it forms the emblematic A of Airbnb

02:28:35and the symbol of conviviality.

02:28:37The food colouring E120

02:28:39or natural red 4

02:28:41aka carmine

02:28:43is made from tiny beetles.

02:28:45It has been used to colour many things

02:28:47from cakes to sweets

02:28:49to drinks.

02:28:51This shine on sweets

02:28:53also comes from insects.

02:28:55This time it is the female

02:28:57which is scratched on trees

02:28:59to be transformed into dried gum

02:29:01which gives this shiny look.

02:29:03The Mozilla Firefox logo

02:29:05is not a fox surrounding the planet

02:29:07it is a pandaroo.

02:29:09The name Firefox

02:29:11is the English translation of its Chinese name.

02:29:13The sewer covers in the street

02:29:15are round for safety reasons.

02:29:17In past civilisations

02:29:19such as Ancient Rome

02:29:21the sewer covers were square stone plates.

02:29:23Unfortunately

02:29:25they were prone to accidents.

02:29:27They were placed diagonally in the hole.

02:29:29The generalisation of the round covers

02:29:31has eliminated this problem

02:29:33because in the absence of angles

02:29:35they cannot fall into the hole.

02:29:37The tomato is technically not a vegetable

02:29:39but a fruit.

02:29:41Bananas are not related to palm trees

02:29:43nor to trees.

02:29:45They are herbs.

02:29:47Bananas are considered a herb

02:29:49because they never develop a truncated trunk

02:29:51like a tree.

02:29:53Instead,

02:29:54they grow on trees.

02:29:56We can also consider them as berries.

02:29:58The colour of the Golden Gate Bridge

02:30:00was not supposed to be the orange-red

02:30:02it is today.

02:30:04We suggested many other original colours

02:30:06such as black with yellow stripes

02:30:08or even the orange sugar pattern

02:30:10to make it visible

02:30:12for ships and planes

02:30:14especially in the frequent fog of San Francisco.

02:30:16But when the steel arrived

02:30:18covered with an orange coating

02:30:20to protect it from rust

02:30:22the architect preferred the colour

02:30:24because the back of the keyboards

02:30:26are not designed to relieve your wrists.

02:30:28Using these pads too long

02:30:30can tire them

02:30:32and slow down the stroke.

02:30:34These articulated pads

02:30:36are simply there to help you

02:30:38see letters and numbers

02:30:40if you do not know how to type blindly.

02:30:42The colour of a pepper

02:30:44does not reveal anything about its taste

02:30:46or heat.

02:30:48In general, the smaller a pepper is

02:30:50the stronger it will be.

02:30:52Heat does not come from seeds

02:30:54but from the taste of these back pads.

02:30:56This is because bears are very important

02:30:58to Bern, one of the largest cities in Switzerland

02:31:00where the founder created

02:31:02the famous triangular chocolate bar.

02:31:04Toblerone is also a pun

02:31:06on the name of the founder's family

02:31:08Tobler and the Italian word Torrone

02:31:10which means a variety of nougat.

02:31:12The empty space under a cup of nougat

02:31:14is there to protect the nougat

02:31:16during transport.

02:31:18This technique is called

02:31:20an intermediate suspension.

02:31:22Not only are they better protected

02:31:24but they can be used

02:31:26more uniformly and more quickly.

02:31:28If you think that the hole

02:31:30on the body of a pen

02:31:32is useless, you are wrong.

02:31:34This is what is called

02:31:36an aeration system

02:31:38which helps the ink to flow

02:31:40more easily.

02:31:42Thus, the air pressure

02:31:44is balanced between the inside

02:31:46and the outside of the pen

02:31:48which allows the ink

02:31:50to flow easily to the tip.

02:31:52One of the most recognized

02:31:54mechanical elements

02:31:56in service stations

02:31:58has a unique design

02:32:00and a very precise function.

02:32:02If a distracted driver

02:32:04forgets that the pen

02:32:06is still inside its tank

02:32:08and starts to drive,

02:32:10the magnetic supports

02:32:12separate without damaging

02:32:14any part of the fuel pump.

02:32:16The logo of Wendy's

02:32:18pays homage to the daughter

02:32:20of the creator Dave Thomas.

02:32:22It comes from his nickname

02:32:24and is a trademark

02:32:26of the restaurant chain.

02:32:28Finding the right way

02:32:30to get out of the motorway

02:32:32can be sometimes confusing,

02:32:34especially in a foreign country.

02:32:36Be careful where the exit signs

02:32:38are on the side of the road.

02:32:40It will be the way

02:32:42you should find yourself.

02:32:44Some toothpaste

02:32:46have a small operculum

02:32:48that must be removed

02:32:50before you can use them.

02:32:52Instead of damaging your nails,

02:32:54you can hide it

02:32:56in the middle of their logo.

02:32:58The two T's in the middle

02:33:00look like two people

02:33:02eating tostitos

02:33:04around a sauce bowl.

02:33:06The sauce bowl is red

02:33:08and forms a dot on the I.

02:33:10One of the most emblematic monuments

02:33:12in the world,

02:33:14the Statue of Liberty,

02:33:16operated for 16 years

02:33:18as a fully operational lighthouse.

02:33:20However, the light was barely visible

02:33:22even since Manhattan.

02:33:24It was impossible to see it in the city.

02:33:26But an accident damaged the torch

02:33:28in 1916

02:33:30and it has been closed to the public since.

02:33:32The label

02:33:34not to be removed

02:33:36under legal proceedings

02:33:38on the mattresses

02:33:40is not there for the consumer

02:33:42and does not cancel your warranty

02:33:44if you remove it.

02:33:46In the 1900s,

02:33:48manufacturers created

02:33:50their filling

02:33:52with practically anything

02:33:54except recycled materials

02:33:56to be reused and sold as new.

02:33:58The Toyota logo

02:34:00is more than a simple

02:34:02random combination of circles.

02:34:04The three overlapping ovals

02:34:06symbolize the fusion

02:34:08of customers' hearts

02:34:10and Toyota's.

02:34:12A California Sushi Roll

02:34:14is made of seaweed,

02:34:16rice,

02:34:18cucumber,

02:34:20avocado

02:34:22and crab meat.

02:34:24It is then heated and pressed

02:34:26to shape it.

02:34:28The Beats logo

02:34:30is simply a tiny B

02:34:32inside a red circle.

02:34:34The circle represents a human head

02:34:36and the B is the shape of an earpiece.

02:34:38All these little black dots

02:34:40on the car's windows

02:34:42are called chips.

02:34:44It is painted black enamel

02:34:46that is put on the windshield

02:34:48during manufacturing.

02:34:50It blocks ultraviolet rays

02:34:52and helps to distribute

02:34:54a sun,

02:34:56a dove,

02:34:58a plant,

02:35:00a spark,

02:35:02a pepper,

02:35:04a spoon,

02:35:06a bowl,

02:35:08a flower,

02:35:10an ice cream,

02:35:12a hand,

02:35:14hair,

02:35:16lips,

02:35:18a whirlwind,

02:35:20a fish,

02:35:22clothes,

02:35:24and more.

02:35:26A zigzag pattern

02:35:28is placed on your scalp

02:35:30and not the flat part.

02:35:32This gives a better grip

02:35:34on the hair and skin

02:35:36and the pin stays in place

02:35:38longer.

02:35:40Ladies and gentlemen,

02:35:42welcome our special guest

02:35:44today,

02:35:46the garbage bag.

02:35:48Canadian inventors

02:35:50created this irreplaceable

02:35:52household item

02:35:54to prevent you from receiving

02:35:56unwanted messages.

02:35:58But we'll get back to that later.

02:36:00And what if I told you

02:36:02that you've used your garbage bags

02:36:04all your life?

02:36:06If you look closely,

02:36:08you'll probably notice

02:36:10that the seam is upside down

02:36:12and it's not by accident.

02:36:14In fact,

02:36:16you're not supposed to shake

02:36:18the bag to open it.

02:36:20You have to place the bag

02:36:22on a bin like a hat

02:36:24Imagine that you have to paint your hair,

02:36:26paint walls

02:36:28or mold a clay mug on the field.

02:36:30But you don't have any

02:36:32hand-protective gear.

02:36:34Well, here's some good news.

02:36:36You can make one

02:36:38from a plastic bag

02:36:40in less than a minute.

02:36:42Just find a large enough bag

02:36:44to fit your torso.

02:36:46Cut a hole in the bottom of the bag

02:36:48for your head

02:36:50and two for the arms on the sides.

02:36:52There you go!

02:36:54Now you can wash your hands

02:36:56and reuse it.

02:36:58Our next tip

02:37:00is for those who don't like

02:37:02wasting money.

02:37:04You can use a real plastic bag

02:37:06instead of a waterproof one

02:37:08that looks like a plastic bag anyway.

02:37:10Just make a round cut

02:37:12for your face

02:37:14and you're ready to go.

02:37:16You can reuse it

02:37:18as many times as you want.

02:37:20You can use a plastic bottle

02:37:22to create a garbage bag distributor.

02:37:24Take the bottle,

02:37:26dry it,

02:37:28and cut the top and bottom.

02:37:30Turn it upside down

02:37:32and voila!

02:37:34Your garbage bag distributor is ready.

02:37:36You can use your imagination

02:37:38to paint and decorate

02:37:40your DIY project

02:37:42with stickers and letters.

02:37:44When the design is ready,

02:37:46attach it to the back of the bottle

02:37:48and stick it to the wall of your kitchen

02:37:50or one of the closet doors.

02:37:52Imagine that you've been planning

02:37:54a wild camping trip

02:37:56and you can't wait to go home.

02:37:58Plastic bags will be very useful

02:38:00if you have to put your clothes

02:38:02or equipment on wet grass.

02:38:04You can also make an emergency sleeping bag

02:38:06using a large garbage bag.

02:38:08After the rain,

02:38:10it will be a nice mattress

02:38:12to put under your sleeping bag

02:38:14to protect it from humidity

02:38:16and provide an additional layer

02:38:18for a comfortable nap.

02:38:20Just fill the bag with leaves

02:38:22and straw hanging from the floor

02:38:24and you're ready to go.

02:38:26You can turn it into a temporary DIY shower,

02:38:28a toilet, or even a changing room

02:38:30made from a single bag.

02:38:32Just hang it on a tree

02:38:34and no one will be able to see you.

02:38:36If you want to go for a walk

02:38:38in the rain with your favorite pair of shoes

02:38:40that get wet easily,

02:38:42here's an easy tip

02:38:44to keep your socks dry.

02:38:46Put plastic bags on your socks,

02:38:48put the edges of the bags

02:38:50inside these or your pants,

02:38:52then put on your shoes.

02:38:54So be very careful!

02:38:56These plastic socks are also very practical

02:38:58when you try to put on tight jeans

02:39:00in which your feet are usually stuck.

02:39:03Has your bag already been torn at the worst moment?

02:39:05A plastic bag with handles

02:39:07can become an emergency backpack.

02:39:09You just have to put your things

02:39:11inside the bag,

02:39:13put your hands in the handles

02:39:15and you're ready to go.

02:39:17A garbage bag is also a good material

02:39:19for book covers.

02:39:21You can reuse multicolored bags

02:39:22to create a unique pattern

02:39:24for your favorite books.

02:39:26You move to a new house

02:39:28and you pack all your things.

02:39:30Suddenly, you run out of cardboard.

02:39:32Does it seem familiar to you?

02:39:34No problem!

02:39:36Take a pack of large garbage bags

02:39:38and pack the remaining things.

02:39:40Unlike boxes,

02:39:42this packaging will protect your belongings

02:39:44from rain or snow.

02:39:46Garbage bags are particularly ideal

02:39:48for packing covers, pillows

02:39:50and stuffed toys.

02:39:52Place the tube of your vacuum cleaner

02:39:54inside the bag

02:39:56and start it up.

02:39:58The vacuum cleaner will remove

02:40:00all the excess air from the bag

02:40:02and you'll have space in your suitcase

02:40:04or your attic.

02:40:06Someone really special

02:40:08invited you home

02:40:10to prepare a romantic dinner.

02:40:12Finally, you want to show

02:40:14all your extraordinary cooking skills.

02:40:16But this person doesn't have a apron

02:40:18and you don't want to ruin your pretty outfit.

02:40:20Don't panic!

02:40:22Speaking of elegant outfits,

02:40:24do you know the garbage bag dress?

02:40:26From time to time,

02:40:28celebrities and famous fashion brands

02:40:30shock the public with outfits

02:40:32that look like garbage bags.

02:40:34Some of them even make outfits

02:40:36using garbage bags as fabric.

02:40:38It's a popular option for young artists

02:40:40who can't afford to buy

02:40:42and use expensive fabrics.

02:40:44Garbage bags are very flexible,

02:40:46which makes them a useful material

02:40:48to create patterns for future outfits.

02:40:50When it comes to garbage bags,

02:40:52you can use them to make

02:40:54undergarments, clothes hoses,

02:40:56small cosmetic bags,

02:40:58make-up organizers, etc.

02:41:00Some even make baskets,

02:41:02bags and floor mats.

02:41:04It's easy to make a home-made carpet.

02:41:06You need to cut several equal strips

02:41:08and weave a long braid from these strips.

02:41:10Then twist this braid in a spiral

02:41:12and attach or glue each layer together.

02:41:14To prevent this construction from breaking,

02:41:16you can sew your carpet

02:41:18to the sewing machine

02:41:20from the middle to the edge

02:41:22of the sewing machine.

02:41:24Plastic bags can also be used

02:41:26as life jackets,

02:41:28ropes or hand-made ribbons

02:41:30to decorate gifts and flowers.

02:41:32Making films is another area

02:41:34where garbage bags can be a real star.

02:41:36If you're filming inside

02:41:38and the sunlight is too bright,

02:41:40you can put white garbage bags

02:41:42on all the windows

02:41:44to diffuse the light

02:41:46or to adjust the white balance.

02:41:48Black garbage bags resistant to light

02:41:50can be used as shadow curtains

02:41:52to block the sun.

02:41:54Wrap the bag like a balloon

02:41:56and place it next to a lamp.

02:41:58But make sure to use a LED lamp

02:42:00so that it doesn't get too hot.

02:42:02Everyone knows that touching a plastic bag

02:42:04with a hot iron is a bad idea

02:42:06because it will melt.

02:42:08But this allows us to create unique shapes

02:42:10from this colorful and affordable material.

02:42:12If you want to make a unique vase design,

02:42:14take a bowl and cover it with paper

02:42:16by squeezing it well.

02:42:18Then wrap the strips of plastic bag

02:42:20around the bowl.

02:42:22Voila!

02:42:24The plastic has melted

02:42:26and you have a new elegant and ecological vase.

02:42:28Garbage bags can produce

02:42:30very cool sound effects.

02:42:32If you live in a desert

02:42:34where it never rains

02:42:36and you need to recreate this relaxing sound,

02:42:38use a plastic bag.

02:42:40It's always better to assume things

02:42:42like an adult.

02:42:44But what if it doesn't work for you?

02:42:46Here's a quick solution.

02:42:48The next time someone calls you

02:42:49you can talk to them now.

02:42:51Simply take a garbage bag

02:42:53and rub it against your phone

02:42:55by shouting,

02:42:57Hello? Hello? I can't hear anything.

02:42:59Hello? Here's the moment of confidence.

02:43:01Have you ever used this trick?

02:43:03Have you ever taken a moment

02:43:05to think about the exciting secrets

02:43:07of today's everyday life

02:43:09on planet Earth?

02:43:11We're talking about small doors

02:43:13in washing machines

02:43:15and small wheels in airplane windows.

02:43:17If you have no idea

02:43:19you'll discover a lot of things.

02:43:22Do you see this drawer

02:43:24under your oven?

02:43:26Maybe you've ignored it from the start

02:43:28or you've used it

02:43:30to store pans and pans.

02:43:32Well, even if it can actually

02:43:34serve as a storage space,

02:43:36it's not its only function.

02:43:38The best way to use this drawer

02:43:40is to keep your meal warm

02:43:42while you wait to serve it.

02:43:44Great, isn't it?

02:43:46Speaking of secret spaces,

02:43:47you may have noticed

02:43:49that most washing machines

02:43:51also have small folding doors at the bottom.

02:43:53These doors actually serve

02:43:55as evacuation hatches.

02:43:57This is where all the stuff

02:43:59we put in our jeans and jackets

02:44:01goes.

02:44:03It's a kind of collector

02:44:05of small intruders.

02:44:07It prevents them from reaching

02:44:09the evacuation pipes

02:44:11and blocking them.

02:44:13This saves hundreds of euros

02:44:15in repair each month.

02:44:17It's like buying spaghetti

02:44:19per person.

02:44:21Here's the solution.

02:44:23The hole in the middle

02:44:25of the leather.

02:44:27It's there to measure

02:44:29the exact amount of dry dough

02:44:31you need for one person.

02:44:33On a similar subject,

02:44:35have you ever wondered

02:44:37why the pens' caps

02:44:39had a hole?

02:44:41You may have thought

02:44:43it was a technical feature

02:44:45to regulate air pressure.

02:44:47Reduce the risk of suffocation.

02:44:49A lot of people

02:44:51like to bite their pens' caps

02:44:53and this tiny hole

02:44:55prevents them from suffocating

02:44:57in case they accidentally swallow the cap

02:44:59and get stuck in their throat.

02:45:01For cooking lovers,

02:45:03there's a hidden secret

02:45:05under your nose

02:45:07that can change your life.

02:45:09Think of the pan.

02:45:11Now, think of their handles.

02:45:13Yes, they also have a hole

02:45:15and it turns out

02:45:17you can put the spoon

02:45:19in the hole

02:45:21when it's still dripping sauce.

02:45:23Speaking of everyday objects,

02:45:25most door handles

02:45:27are made of brass

02:45:29because this material

02:45:31makes them naturally antibacterial.

02:45:33Unlike plastic,

02:45:35brass door handles

02:45:37are somehow magical.

02:45:39They can be disinfected

02:45:41without having to clean them.

02:45:43Have you ever noticed

02:45:45that under a metre

02:45:47there's a hole

02:45:49in the metal part

02:45:51that you have to pull

02:45:53to measure something?

02:45:55Well, this hole

02:45:57is the exact size

02:45:59of an ordinary nail.

02:46:01It was designed

02:46:03so that you can hang the metre

02:46:05on top of a nail

02:46:07to hold it while you measure.

02:46:09As for the margins of your notebook,

02:46:11they were invented

02:46:13to protect the pages from rotting.

02:46:15No, they didn't copy

02:46:17what was written on the pages.

02:46:19So, to prevent information

02:46:21from getting lost,

02:46:23we created the margins.

02:46:25This way,

02:46:27the texts were concentrated

02:46:29in the middle of the pages

02:46:31and remained undisturbed.

02:46:33Maybe that's how,

02:46:35through expression,

02:46:37information was digested.

02:46:39And what about these tiny holes

02:46:41at the bottom of the plane's windows?

02:46:43They have an extremely important function

02:46:45to regulate the air pressure

02:46:47in the cabin.

02:46:49By the way,

02:46:51a plane's tablets

02:46:53are the most germ-infected places

02:46:55in the cabin.

02:46:57Studies have shown

02:46:59that these tablets

02:47:01contained eight times more germs

02:47:03than the toilet flush button.

02:47:05And now,

02:47:07what would you say

02:47:09to cut a commercial plane in half

02:47:11and see what's inside?

02:47:13Well, it would look

02:47:15more or less like this.

02:47:17There are parts of the wing system

02:47:19and so on.

02:47:21Well, let's move on to bowling balls,

02:47:23even if the transition is a bit brutal.

02:47:25Have you ever wondered

02:47:27what the inside of a bowling ball looks like?

02:47:29If you cut a professional ball in half,

02:47:31you will see a familiar shape.

02:47:33Look closely.

02:47:35Do you see it?

02:47:37Doesn't it look like the logo of Sympa?

02:47:39Anyway,

02:47:41professional bowling balls

02:47:43are different from those of your local bowling.

02:47:45They are designed

02:47:47to help the pros

02:47:49to make more strikes.

02:47:51The weight of professional bowling balls

02:47:53is designed to be projected

02:47:55towards the inside

02:47:57when they move

02:47:59on the bowling track.

02:48:01It is therefore more difficult

02:48:03to find them in the tracks

02:48:05next to the track.

02:48:07Speaking of bowling balls,

02:48:09let's take a look

02:48:11inside a baseball bat.

02:48:13To make it light and aerodynamic,

02:48:15manufacturers use

02:48:17a black rubber-wrapped

02:48:19centerpiece.

02:48:21Then there is a layer of red rubber

02:48:23followed by two or three layers

02:48:25of wool thread.

02:48:27After that,

02:48:29there is a visible white leather cover

02:48:31and this magnificent red seam

02:48:33on the side that unites everything.

02:48:35If you had an X-ray vision

02:48:37and you managed to look

02:48:39inside a human bone,

02:48:41what attracts the most attention

02:48:43is this structure

02:48:45resembling a spider web

02:48:47which is a very condensed

02:48:49and complex structure of nerves

02:48:51that you have inside your bones.

02:48:53Now, a riddle.

02:48:55What is round,

02:48:57found near the ocean

02:48:59and looks like an aerial view

02:49:01of the Guggenheim Museum

02:49:03in New York,

02:49:05the one that is almost

02:49:07entirely made of ramps?

02:49:09If you answered

02:49:11a shell of a nautilus,

02:49:13then you guessed right.

02:49:15A nautilus is a shell

02:49:17of a matte white

02:49:19and an inner layer

02:49:21of a iridescent white.

02:49:23And if you had to cut it in half,

02:49:25it would look a lot like

02:49:27inside the Guggenheim Museum.

02:49:29Aloe Vera leaves

02:49:31are excellent for healing

02:49:33and also for hydration.

02:49:35But if you managed to look

02:49:37inside an aloe leaf,

02:49:39the image you would see

02:49:41would be as satisfying as relaxing.

02:49:43Who has never dreamed

02:49:45of a pool filled with jam?

02:49:47But you would change your mind

02:49:49if you cut a tube

02:49:51that contains several colors.

02:49:53There have been speculations

02:49:55that the inside of such a tube

02:49:57could be divided by barriers

02:49:59so that the bands do not mix.

02:50:01But if you cut it in half,

02:50:03you will see that it has

02:50:05only one inner space.

02:50:07It turns out that a complex science

02:50:09is hidden behind the manufacture

02:50:11of striped toothpaste.

02:50:13According to a specialist,

02:50:15it is necessary to ensure

02:50:17that the toothpaste does not mix with each other.

02:50:19This is why if you cut a tube,

02:50:21you will see something

02:50:23that looks like several slices

02:50:25of pizza of different colors.

02:50:27Now, if you open your closet,

02:50:29you will find at least

02:50:31a few wooden belts.

02:50:33Generally, they are made of cedar wood,

02:50:35which is a natural repulsive

02:50:37against mites.

02:50:39For some people,

02:50:41the eyeliner is a must

02:50:43on a daily basis.

02:50:45But did you know that

02:50:47there are also

02:50:49two types of headrests?

02:50:51Normally, we use the headrests

02:50:53to, well, rest our heads,

02:50:55don't we?

02:50:57Not only.

02:50:59It turns out that the headrests

02:51:01can be easily removed from the seats

02:51:03and used to break the car windows

02:51:05in case of emergency.

02:51:07Very few people know

02:51:09the following trick.

02:51:11You probably place your straw

02:51:13in the width,

02:51:15like most of us.

02:51:17If it doesn't work

02:51:19as it should,

02:51:21the best way to place a straw

02:51:23is in the length.

02:51:25This way,

02:51:27you will take more steps

02:51:29on the straw

02:51:31before entering your home.

02:51:33And finally,

02:51:35you probably passed the vacuum cleaner

02:51:37in the wrong way

02:51:39and we can prove it.

02:51:41Most people are content

02:51:43to vacuum the floors

02:51:45and carpets in one direction

02:51:47when they are tidied up.

02:51:49First, you move forward

02:51:51with the brush

02:51:53until you reach the end of the row.

02:51:55Then, you sweep the carpet

02:51:57and you go down

02:51:59along the same row

02:52:01by picking up the dust

02:52:03that was not collected

02:52:05during the first sweeping.

02:52:07Or, if you don't want to disturb the dust,

02:52:09you can be content

02:52:11to sweep the room

02:52:13with a simple glance.

02:52:15Whether it is something

02:52:17on everyday objects

02:52:19that you probably didn't know.

02:52:21You use door handles every day,

02:52:23so it is normal

02:52:25to worry about the number of germs

02:52:27that could accumulate.

02:52:29However, it is partly for this reason

02:52:31that we make brass handles.

02:52:33This alloy has an antimicrobial effect

02:52:35and eliminates the microorganisms

02:52:37that would start a colony

02:52:39on your door handle.

02:52:41Your pants have this fifth pocket

02:52:43which is often considered

02:52:45as a small useless pocket.

02:52:47It is used to provide a safe place

02:52:49for your watch,

02:52:51which became necessary

02:52:53during its invention in 1901.

02:52:55It then continued to be used

02:52:57for traditional purposes.

02:52:59Today, it remains a practical place

02:53:01to slip a few Tic Tacs.

02:53:03You probably took these little rivets

02:53:05on your jeans

02:53:07for a kind of decorative motif,

02:53:09just like this little pocket.

02:53:11In fact, they are incredibly important.

02:53:13They are there to provide additional support

02:53:15to the areas that support

02:53:17your watch in an embarrassing way.

02:53:19This little button

02:53:21at the end of your seat belt

02:53:23does not seem to be in place.

02:53:25In fact, it is there

02:53:27so that your buckle

02:53:29always stays at the end

02:53:31so that you do not have to

02:53:33fidget your seat belt

02:53:35every time you put it on.

02:53:37You are in a new car

02:53:39or a rental car

02:53:41and the gauge tells you

02:53:43that the fuel is running low.

02:53:45Inside, you do not know

02:53:47which side of an arrow

02:53:49indicates which side

02:53:51you have to fill your tank.

02:53:53Some car models

02:53:55may only have a pipe

02:53:57as a gauge,

02:53:59but then it is represented

02:54:01on the side where the tank is.

02:54:03Hiking in the snow

02:54:05requires a particular type of shoe.

02:54:07Adapted shoes also have

02:54:09an additional eyelet

02:54:11in which your lace can pass.

02:54:13By passing your lace

02:54:15in these additional eyelets,

02:54:17you can walk.

02:54:19When you walk,

02:54:21the eyelets are also

02:54:23a source of concern.

02:54:25The sweat in your shoes

02:54:27creates friction between your foot

02:54:29and this one,

02:54:31which then helps

02:54:33to create the eyelets.

02:54:35The anti-sweat that you use

02:54:37for your laces

02:54:39will also help your feet

02:54:41not to sweat too much.

02:54:43Just make sure

02:54:45to use a transparent product.

02:54:47The hole in your oven

02:54:49where you keep

02:54:51all your spare hair

02:54:53was actually designed

02:54:55to keep your food warm,

02:54:57which is ideal

02:54:59to wait for late guests.

02:55:01Have you ever wondered

02:55:03how long this lock

02:55:05could last

02:55:07when it is outside,

02:55:09in the rain,

02:55:11to protect your bike?

02:55:13There is a small hole

02:55:15at the bottom of this one

02:55:17that is not there

02:55:19to check who is inside

02:55:21before going on a trip

02:55:23with people you don't like.

02:55:25It is a lock hole

02:55:27in case it breaks.

02:55:29Ketchup bottles, sauces

02:55:31and all the other condiments

02:55:33we like

02:55:35all reach a filling level

02:55:37where it becomes difficult

02:55:39to get the content out.

02:55:41In wine,

02:55:43you try to hit it,

02:55:45shake it

02:55:47or press it.

02:55:49The sauce will come out

02:55:51more easily and more gently

02:55:53allowing gravity

02:55:55to alleviate your frustration.

02:55:57The wooden belts

02:55:59help to repel

02:56:01unwanted insects

02:56:03and avoid the proliferation

02:56:05of mushrooms

02:56:07that stain your clothes

02:56:09as they are made

02:56:11of cedar wood.

02:56:13They contain oils

02:56:15with insecticide

02:56:17that are more or less

02:56:19similar to dactylography

02:56:21and we know the correct way

02:56:23to use a keyboard.

02:56:25But you may not have noticed

02:56:27that the F and J keys

02:56:29had a little stop at the bottom.

02:56:31They are there to help you

02:56:33find the correct starting position

02:56:35with your fingers on the keyboard

02:56:37without having to look at it.

02:56:39If you were lucky

02:56:41to have the seat in the plane,

02:56:43you must have noticed

02:56:45the little hole

02:56:47that is not really glass

02:56:49which prevents it from fogging up

02:56:51and allows you to admire the landscape

02:56:53during your trip.

02:56:55Originally, the windows of the planes

02:56:57were square,

02:56:59however they were constantly breaking

02:57:01due to pressure changes.

02:57:03The round windows

02:57:05allow uniform pressure distribution

02:57:07which guarantees you

02:57:09a pleasant trip

02:57:11without any bad surprises.

02:57:13For Nintendo Switch players,

02:57:15those who have tried to taste their cartridges

02:57:17should be careful

02:57:19because the size of the cartridges

02:57:21of the Switch is very small

02:57:23and could be a danger

02:57:25for the youngest players

02:57:27who may tend to put

02:57:29things in their mouths

02:57:31that they should not.

02:57:33The bitter taste of Benzoate

02:57:35from Denatonium

02:57:37therefore guarantees

02:57:39that the cartridges

02:57:41will not be tasted for too long.

02:57:43Skin cosmetics containers

02:57:45have a secret number.

02:57:48The caps of the pens

02:57:50have a hole at their ends.

02:57:52They are not there to help your pen breathe

02:57:54and increase its performance

02:57:56but to help you breathe

02:57:58you, just in case,

02:58:00while you are sitting in class or at work,

02:58:02you will rub your cap

02:58:04and wash it with my guards.

02:58:06No panic,

02:58:08the manufacturers thought of everything.

02:58:10When you travel by car

02:58:12or with any other land transport

02:58:14and you try to drink

02:58:15with a straw,

02:58:17you sometimes have trouble doing it.

02:58:19Just turn the cap of the pen

02:58:21so that your straw

02:58:23easily fits inside

02:58:25and it is easier to drink with.

02:58:27There are always spare buttons

02:58:29when you buy new clothes

02:58:31as well as a small piece of fabric.

02:58:33But it is far too small

02:58:35to repair the part

02:58:37that always tears first.

02:58:39The fabric is actually there

02:58:41so that you can test it when washing

02:58:43so as not to accidentally damage

02:58:45the amount of dough

02:58:47that you need to cook.

02:58:49But the hole inside your spaghetti spoon

02:58:51which seems to be there

02:58:53to evacuate the water

02:58:55is actually there

02:58:57so that you can measure

02:58:59the amount of raw dough

02:59:01to cook for each person.

02:59:03New shoes are always sold

02:59:05with strange little packages.

02:59:07It is silica gel.

02:59:09It is used to reduce air humidity

02:59:11to avoid any mushroom development

02:59:13while your shoes wait

02:59:15and it is very effective

02:59:17capable of absorbing

02:59:1950% of humidity.

02:59:21So make sure not to throw it away.

02:59:23The next time you need to dry

02:59:25your electronic devices

02:59:27that have taken water

02:59:29it is much easier

02:59:31than using rice.

02:59:33It is already quite difficult

02:59:35to drive at night

02:59:37but it is even worse

02:59:39when the driver behind you

02:59:41turns on his traffic lights.

02:59:43Your rearview mirror

02:59:45will help you

02:59:47if the person behind you

02:59:49forgets to turn off his lights.

02:59:51Although your screwdriver

02:59:53is ergonomic for your hand

02:59:55you sometimes have to fight

02:59:57with a screw

02:59:59that is just too difficult

03:00:01to unscrew.

03:00:03The handle is also designed

03:00:05so that it can be easily inserted

03:00:07into a wrench

03:00:09which allows you to apply

03:00:11more force

03:00:13to be sure

03:00:15that the long hairs

03:00:17that protrude

03:00:19are not there

03:00:21to give your shoes

03:00:23an extra crack

03:00:25but as a security measure.

03:00:27It minimizes the risk

03:00:29of objects getting stuck

03:00:31between the steps

03:00:33and the sides of the escalator.

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