In continuum mechanics, specifically in acoustics, a sound particle refers to a material element in a medium through which an acoustic wave is transmitted. Here, the term material element is only applicable in the continuum model of matter, where a material body is assumed to consist of uncountably infinitely many points (called material points), which take up all the space within the region of the body.
In continuum mechanics, specifically in acoustics, a sound particle refers to a material element in a medium through which an acoustic wave is transmitted. Here, the term material element is only applicable in the continuum model of matter, where a material body is assumed to consist of uncountably infinitely many points (called material points), which take up all the space within the region of the body.
Source: Wikipedia "Sound particle" · CC BY-SA 4.0
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