Firstly, assuming constant temperature and pressure. The speed of a sound wave in a medium is constant. For any wave, the speed of wave propagation is wavelength times frequency. If we keep increasing the frequency of sound to a ridiculously high value so that the corresponding wavelength is in the order of micro-meters. Would the resulting wave be considered a sound wave or a heat conduction?
Essentially the resulting wave is just vibrating the molecules mechanically instead of electromagnetically (think IR waves) with a similar wavelength.
If someone could make me picture/visualise the answer that would be great because I tend to be a visual learner. Thanks!
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It would still be considered a sound wave. A wave is a wave even if it’s wavelength is super short. Sound does generate some heat since sound is the ordered movement of atoms and molecules that’s in the air or whatever medium the sound wave is going through.
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