Clapping creates sound through air pressure, not just hand impact. Shape, speed, and skin softness change the sound.

Instead of clapping, students attending panels, debates and talks will need to express their appreciation with the sign language equivalent — a silent wave of the hand. Some people are not on bo ...

Cornell University researchers have finally figured out exactly how human hand claps create their distinctive sound — and ...

When 16-year-old Amy Pruter listens to her favorite songs nowadays, she translates the lyrics into American Sign Language, her expressive hands giving the silent words a music and poetry of their own.