Question
Differentiate the following:
  1. Wave velocity and particle velocity.
  2. Harmonics and overtones.

Answer

  1.  
Wave velocity
Particle velocity
The velocity of wave motion through a particular medium is constant. It depends only on the nature of the medium, does not depends upon its frequency or wavelength or intensity.
Velocity of the particles during their vibration is different at different position.
  1.  
Harmonics
Overtones
Harmonics are the notes/ seconds of frequency equal to or an integral multiple of fundamental frequency (n). Thus, first, second, third, ... harmonics have frequencies n, 2n, 3n, ... respectively.
Overtones are the notes/ seconds of frequency twice/ thrice/ four times ... the fundamental frequency (n). Thus, first, second, third, ... overtones have frequencies 2n, 3n, 4n, ... respectively and so on.

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