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IEVref:103-10-15ID:
Language:enStatus: Standard
Term: group velocity
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Symbol: cg
vg
Definition: at a point in a medium, velocity of the envelope of a packet of superimposed sinusoidal waves of equal amplitude and slightly different frequencies tending to a common limiting frequency

Note 1 to entry: The magnitude of the group velocity vector is equal to the derivative of the frequency with respect to the wavenumber.

Note 2 to entry: If both group velocities and other velocities are involved, then c should be used for the former and v (vee) for the latter.


Publication date:2009-12
Source:
Replaces:
Internal notes:2017-02-20: Editorial revisions in accordance with the information provided in C00020 (IEV 103) - evaluation. JGO
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