ITHACA, N.Y. — Every time you applaud at a concert or celebrate a touchdown, your hands are performing a feat of physics that scientists have puzzled over for decades. Cornell University researchers ...

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 ...

Every once in a while you find a YouTube video that you can’t stop watching and you kind of hate it, but for some reason you love it anyway. My most recent one comes from a video showing what every ...