Hand clapping is ubiquitous behavior for humans across time and cultures, serving many different purposes: to signify approval with applause, for instance, or to keep time to music. Acousticians often ...

A content creator named Selva recently shared a video from her beach vacation in Brazil. As the sun began to set, people were walking and enjoying the view when she noticed a group clapping in unison.

ITHACA, N.Y. -- 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 an opposing army. Sunny Jung, professor of biological and ...