Everything about Particle Velocity totally explained
Particle velocity is the velocity
v of a particle (real or imagined) in a
medium as it transmits a
wave. In many cases this is a
longitudinal wave of
pressure as with sound, but it can also be a
transverse wave as with the vibration of a taut string.
When applied to a sound wave through a medium of air, particle velocity would be the physical speed of an air molecule as it moves back and forth in the direction the sound wave is travelling as it passes.
Particle velocity shouldn't be confused with the speed of the
wave as it passes through the medium, for example in the case of a sound wave, particle velocity isn't the same as the
speed of sound.
In applications involving sound, Particle velocity is usually measured using a logarithmic
decibel scale called
particle velocity level.
Equations in terms of other measurements
The velocity
v can be related to the particle displacement
and acceleration for single frequency plane wave of frequency f using
»
Further Information
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