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It all happens in a snap. New high-speed video exposes the blink-and-you’ll-miss-it physics behind snapping your fingers. The footage reveals the extreme speed at which the gesture occurs, and shows ...

In Marvel's "Avengers: Infinity War," supervillain Thanos uses a simple gesture — a snap of a finger — to destroy half of all life in the universe. But the mass-murdering comic book character not only ...