Préparez-vous pour un voyage qui va dérégler votre esprit car nous avons aligné 18 illusions d'optique qui joueront sérieusement avec votre vue. Des motifs qui déroutent l'esprit aux formes époustouflantes, ces illusions vous feront remettre en question ce qui est réel et ce qui joue simplement avec votre cerveau. Alors, prenez un en-cas, asseyez-vous et préparez-vous à mettre votre perception à l'épreuve. C'est comme des montagnes russes pour vos yeux, vous ne croirez pas ce que vous voyez ! Après tout, qui a besoin de la réalité quand vous avez des illusions d'optique pour rendre les choses intéressantes ? Animation créée par Sympa.
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Musique par Epidemic Sound https://www.epidemicsound.com
Pour ne rien perdre de Sympa, abonnez-vous!: https://goo.gl/6E4Xna
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https://www.eastnews.ru
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Si tu en veux encore plus, fais un tour ici:
http://sympa-sympa.com
----------------------------------------------------------------------------------------
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
Category
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FunTranscript
00:00This optical illusion will allow you to know if you are able to drive in the rain or not.
00:06Take a look at this image.
00:08Try to locate the hidden number sequence inside.
00:11Let's go!
00:19Did you say...
00:203, 4, 152, 839?
00:23If this is the case, then your sensitivity to contrast is impeccable.
00:28This famous sensitivity to contrast helps you to clearly distinguish the outline of small objects.
00:33If this function is not well developed at home,
00:36then you should probably not drive in the rain or even when there is fog.
00:43Look at this image.
00:44What animal is not represented here?
00:46A rabbit, a duck or a snail?
00:57The image clearly does not represent a snail.
01:00Well done if you found the right answer.
01:03The image clearly does not represent a snail.
01:06The image clearly does not represent a snail.
01:10Well done if you found the right answer.
01:17How many different scenes can you spot on this image?
01:203, 4, try to guess.
01:29There are only two.
01:30You should be able to see a chalice in the first scene.
01:33And then, when you change your point of view,
01:36you should be able to spot two profile faces on a white background.
01:44Okay, take a look at these two images.
01:47Can you tell if the red circle on the right is bigger than the one on the left?
01:58Believe it or not, these two circles are actually exactly the same size.
02:03This illusion is known as the Ebbinghaus illusion
02:06and was discovered by a German philosopher at the beginning of the 20th century.
02:12One of the possible explanations for which our brain derails
02:15when it contemplates this image is due to the size of the circles around it.
02:20As the ones on the right are much larger,
02:22it gives the impression that the red circle on the right is much smaller than the one on the left.
02:26Can you spot the eye of this parakeet for 15 seconds?
02:29Just keep looking at it.
02:31We'll tell you when you can close your eyes.
02:33You are about to see a perfect example of a remaining image.
02:373, 2, 1 and close your eyes.
02:40Can you see a red parakeet?
02:56Can you see a red parakeet?
03:04Isn't it incredible that, although this parakeet is black and white,
03:09you have the impression of seeing the color red?
03:12Once again, it's just your brain trying to guess the color of something.
03:20Behind all these little black dots is a hidden image.
03:23Are you one of the 1% of the population who are able to see it?
03:34It's a minion. Congratulations if you spotted it.
03:40Here's another one in the same style.
03:42Can you spot what's hidden here?
03:44Here.
03:51It's a ninja turtle.
03:53Honestly, you had to be a bit of a ninja yourself to spot it.
04:00And this one?
04:08Well, well, it's Homer Simpson.
04:14Now, something is hidden behind these black stripes.
04:17How does your X-ray vision work?
04:26You just saw if you understood that it was the eponymous hero of the movie Dragon.
04:31It's cute.
04:35Are you able to say which circle in this image is the darkest?
04:45Oh, oh, it was really a trick question.
04:47All circles are exactly the same color.
04:50It's a classic example of the optical illusion of saturation.
04:54It shows how our brain perceives color in a very subjective way.
04:58The lighting and the background of an object actually influence the way we see it.
05:03Thus, when the gray circle is on a darker background,
05:06we tend to believe that it is lighter than its true color.
05:10And vice versa.
05:14This illusion is called the impossible triangle.
05:17But wait, what makes it so impossible?
05:20You only have a few seconds to try to understand it.
05:30The tripod, or pink triangle, is also known as an impossible object
05:35that simply cannot exist in reality.
05:38This magical triangle defies the laws of Euclidean geometry.
05:42If you follow a ball sliding on the surface of the triangle from its highest point,
05:47you will notice something strange.
05:50It seems that the left side of the triangle moves away from the viewer,
05:53while the right side moves closer to you.
05:56The pink triangle is the type of geometric figure that can only exist as an optical illusion,
06:02because...
06:03Here's what it looks like if we dissect it.
06:06We're pretty far from a triangle, aren't we?
06:12Look at this image.
06:14In your opinion, which line extends the black line?
06:17The red line or the blue line?
06:26As surprising as it may seem,
06:28it is not the blue line, but the red line.
06:31This illusion was first imagined in the 1860s
06:35and is called the Poggendorf illusion.
06:38It is a classic example of how our brain perceives geometric shapes and depth.
06:43According to scientists, our brain tries to apprehend these images in two dimensions
06:48with three-dimensional properties.
06:50That's why it alters the depth between the lines in this image.
06:54It's pretty amazing, isn't it?
06:58Look carefully at this staircase.
07:00And now, let's turn the image upside down.
07:02It still looks like a staircase,
07:04but instead of going from right to left, it looks like it goes from left to right.
07:07Don't blink, though.
07:09Because if you do, the illusion will disappear
07:12and you will find yourself with the original image.
07:21This illusion is known as Schröder's staircase
07:24and was invented by the German naturalist Heinrich Schröder in 1858.
07:29It is extremely simple,
07:31but it relies on the same principle that we saw in the previous illusion.
07:35If we dismantle this staircase,
07:37we will notice that the image is actually flat.
07:40What our brain perceives as a three-dimensional image
07:43is only a combination of shadows and light.
07:46This means that 3D itself is an optical illusion.
07:51It operates because our brain receives images
07:54and tries to adapt them to those it already knows.
07:57It sees a shadow in a two-dimensional image
08:00and interprets it as depth.
08:02Basically, it creates an artificial perspective of the object in front of us.
08:07In this case, this is what we call a three-dimensional perspective.
08:15These circles seem to turn on themselves very quickly.
08:19Do you think they move for real,
08:21or could we say that they are motionless?
08:25I know it's hard to believe,
08:27but they don't move an inch.
08:29This illusion has disconcerted netizens,
08:31but this is what happens behind the scenes.
08:34There is an inner edge
08:36and an outer edge very, very thin to these circles.
08:39And these edges are of a different color from the rest of the circle.
08:43To create this illusion,
08:45the animators move these outer edges.
08:48The animators move these outer edges.
08:51The animators move these outer edges.
08:54But because of the color variation,
08:56our brain interprets it as if the entire circle were moving.
09:00That's why even if we block the arrows,
09:02we still have the impression that the circles are moving.
09:08Look at this image.
09:09It looks like the square in the middle is breathing, doesn't it?
09:12As if it was growing before shrinking.
09:15And what if we told you that it simply turns on itself,
09:18but doesn't change its size?
09:21Here's what happens.
09:23This illusion is based on a principle called motion binding.
09:26It occurs when our brain tries to predict
09:28the movement of one of the elements in the image.
09:31It's breathtaking, isn't it?
09:36Let's try another one.
09:38Fix the cross in the middle of this image for 10 seconds,
09:41from now on.
09:44All the colors of the image have they disappeared
09:46without letting you see anything but a white page?
09:49Strangely, our brain simply erases all the nuanced colors
09:53and leaves you with this white screen.
09:57First of all, we have to think about
09:59how we can predict the movement of the elements in the image.
10:02How can we predict the movement of the elements in the image?
10:05How can we predict the movement of the elements in the image?
10:08How can we predict the movement of the elements in the image?
10:12First of all, we have what looks like a gray bar
10:15moving from top to bottom on an orange background.
10:18But if you fix this little black dot at the bottom right,
10:21you could see the gray bar take on a different color.
10:25What color did you see?
10:32Did you say blue?
10:34Yes, that's exactly it.
10:37Here is the drawing of a city with a dot in the middle.
10:40Fix this dot for about 10 seconds, from now on.
10:56Wow, but what just happened?
10:58Even after the image turns black and white,
11:01our brain is still able to perceive the opposite colors.
11:05This is another example of remanence.
11:08Once we have fed our brain with a fixed image of something,
11:12when we turn it black and white,
11:14our brain is still trying to guess the colors.