Phase Velocity
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Phase Velocity
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Of a traveling
plane wave at a single frequency,
the velocity of an equiphase surface along the wave normal. Also called
phase 'speed, wave speed, wave velocity.
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Thus, the component sin ( 2π/λ)(x - ct) represents a wavelength λ traveling in the positive x- direction with
phase velocity c. This concept is to be distinguished from signal velocity,
group velocity, and the velocity of fluid parcels. See velocity
of propagation.
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References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
