In the coming days plumes of black or white smoke will rise from a chimney above the Sistine Chapel, signaling the voting at the conclave of Roman Catholic cardinals to find Pope Francis' successor. A pyrotechnics expert explains how it works. - REUTERS
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00:00During the Conclave, the Cardinals will have at their disposal this electronic control unit
00:16and both black and white pyrotechnic cartridges, consisting of six smoke cartridges connected
00:22in series for the duration of seven minutes. Then after the vote, the ballots will go into
00:27the old stove from the old conclaves and the smoke cartridge into the new stove that has
00:32been provided by the Vatican. Then the Cardinal will press the on button and the effect will
00:37be either black or white, lasting about seven minutes. If the Pope is not elected, the smoke
00:44is black, and if the Pope is elected, it is white.