Our readers have detailed and informative advice to offer here – although not all agree on whether a hot air dryer should be ...

Clapping hands spew out a jet of air, ... For example, cupping the hands when clapping produced a larger cavity — and a lower-pitched sound — than clapping with flat hands.

Faster clapping yields lower-frequency sounds, as does cupping one’s hands while clapping. ... enclosing a pocket of air. (The same 45-degree hand orientation applies.) ...

As two flat hands collide, the air between them is forced out increasingly quickly, ultimately exceeding the speed of sound. This creates an abrupt pressure change, resulting in shock waves that make ...