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IEVref:705-02-16ID:
Language:enStatus: Standard
Term: phase velocity (vector)
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Definition: the velocity vector at a given point and in a given direction of the movement of a wavefront of a sinusoidal travelling wave, defined by a specified phase

NOTE 1 – If no direction is specified, the phase velocity to be considered is that in the direction of propagation.

NOTE 2 – In the direction of propagation, the magnitude of the phase velocity has a minimum value equal to the angular frequency divided by the absolute value of the real component of the wave vector.


Publication date:1995-09
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