The Last Stand," a character claps and sends a shock wave that knocks out an opposing army. Sunny Jung, professor of ...
The “Helmholtz resonator” concept explains the frequencies of sound produced by clapping the hands together in different configurations.
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).
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