In Chapter 5 we studied water waves which were assumed to be waves which propagate in an incompressible fluid. Next in order of complexity is the phenomenon of sound wave propagation in air. In investigating this phenomenon we must treat the medium (air) as a compressible fluid, in contrast to the previous chapter where we were allowed to consider the medium (water) as an incompressible fluid.
KeywordsWave Equation Sound Wave Spherical Surface Velocity Potential Field Point
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