Wave velocity

Wave velocity is a wave property, which may refer to:
*phase velocity, the velocity at which a wave phase propagates at a certain frequency
*group velocity, the propagation velocity for the envelope of wave groups and often of wave energy, different from the phase velocity for dispersive waves
*signal velocity or information velocity, which is the velocity at which a wave carries information
*front velocity , the velocity at which the first rise of a pulse above zero moves forward


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