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 ...

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 ...

Researchers elucidate the complex physical mechanisms and fluid dynamics involved in a handclap, with potential applications in bioacoustics and personal identification, whereby a handclap could be ...