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group velocity

noun

, Physics.
  1. the velocity of finite numbers of waves undergoing simple harmonic motion, equal to the phase velocity when it does not vary with the wavelengths of the waves. The group velocity of the set of waves produced in water when a stone is dropped is less than the velocity of the individual waves.


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Word History and Origins

Origin of group velocity1

First recorded in 1885–90
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How does group velocity compare to similar and commonly confused words? Explore the most common comparisons:

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