Consider an evanescent plane electromagnetic wave (for which k = ix, with real), with the wave
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Consider an evanescent plane electromagnetic wave (for which k = iαx̂, with α real), with the wave field vectors E and H proportional to exp [i(k · r – ωt)]. Show that the average value of the Poynting vector < S > is zero for an evanescent wave.
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The Poynting vector represents the direction and rate of energy transfer power per unit area in an e...View the full answer
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