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group velocity = phase velocity |
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| Jan14-13, 04:35 AM | #1 |
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group velocity = phase velocity
in semiconductor Vg=Vp=Vcls as state in link
http://www.tf.uni-kiel.de/matwis/ama..._en/index.html is this possible? i dont quite understand it because mostly say they are different. Or under the certain condition? |
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