What is Wave speed?
'''Wave speed''' is a [[wave]] property which may mean only one of several things: which may refer to [[absolute value]] of: *[[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. This is 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. {{disambiguation}}