If heat (or thermal energy) are vibrations of particles and sound is a wave that is propagated through medium e.g vibration of air particles, what indicates if vibration of particles will be perceived as sound or heat (what is the difference between these vibrations) ?
[Physics] Difference between sound and heat at particle level
acousticsthermodynamicsvibrations
Best Answer
Heat corresponds to random movements of atoms and molecules. It travels only through conduction - slowly. Sound consists of ordered movements, travelling through a medium as a wave (although it can also stand still, as in a standing wave). Large numbers of atoms or molecules move back and forth in synchrony. Sound eventually becomes random, as it is scattered around in many directions, and ultimately ends as heat.