Phase Velocity

The velocity with which planes of equal phase, crests or troughs, progress through the medium.
where
vp = phase velocity [ms-1]
ω = angular frequency [rads-1]
k = wavenumber [m-1]
f = frequency [Hz]
λ = wavelength [m]

In both dispersive and non-dispersive media the wave velocity for sinusoidal waves of a particular frequency is termed the phase velocity.

See also: Group Delay, Group Velocity, Wave Equation.

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Subjects: Noise & Vibration Physics