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Phase/group velocity

  1. Nov 9, 2004 #1
    Can anyone help me with this?

    If w = square root of (gk) what is the phase and group velocity and show that the group velocity = v/2.
  2. jcsd
  3. Nov 10, 2004 #2
    Can you tell me what exactly the group velocity is???
    I mean its definition. Thank a lot.
    Somy :smile:
  4. Nov 10, 2004 #3


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    It's [tex] v_{g} =: \frac{d\omega(k)}{dk} [/tex],where the [tex] \omega(k) [/tex] is the dispersion relation.
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