Sound | Properties, Types, & Facts | Britannica
https://www.britannica.com/science/sound-physics
WebSep 7, 2023 · Sound, a mechanical disturbance from a state of equilibrium that propagates through an elastic material medium. A purely subjective, but unduly restrictive, definition of sound is also possible, as that which is perceived by the ear. Learn more about the properties and types of sound in this article.
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