In a scene toward the end of the 2006 film, "X-Men: The Last Stand," a character claps and sends a shock wave that knocks out ...

Clapping is both a scientific event and a social gesture. A study explores the complex physics behind the sound of clapping. The noise originates from compressed air, not just hand collisions.

One readily noticeable pathognomonic trait of autism is hand-flapping—a stereotyped motor movement that can look a bit like an attempt to accelerating the drying of nail polish. Not all with autism do ...