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Velocity of Wave Packets |
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| Jan17-05, 07:23 PM | #1 |
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Velocity of Wave Packets
Wave packets has a group velocity of
[tex]v_{group}=\frac{d\omega}{dk}[/tex] and its phase velocity is [tex]v_{phase}=\frac{\omega}{k}[/tex] Show that the group velocity and the phase velocity are related by: [tex]v_{group} = v_{phase} - \lambda\frac{dv_{phase}}{d\lambda}[/tex] Can someone please tell me where to start on this problem? |
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