A round of applause, please: Scientists have finally figured out what’s behind the sound of clapping. The research pinpoints a mechanism called a Helmholtz resonator — the same acoustic ...

We wanted to explore how we generate the sound depending on how we clap our hands." The researchers used high-speed cameras to track the hand motion, air flow and sound of 10 volunteers clapping ...

You stand a long distance from a wall, clap, and listen for the echo. The distance travelled is twice the distance from you to the wall (because the sound has to travel to the wall and back).