Draw a typical dispersion relation curve (w-k curve ) for Vp=Vg and Vp not equal to Vg where Vp is the phase velocity and Vg the group velocity and values of delta w and delta k are the same
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Draw a typical dispersion relation curve (w-k curve ) for Vp=Vg and Vp not equal to Vg where Vp is the phase velocity and Vg the group velocity and values of delta w and delta k are the same
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