[問題] 電磁學/電磁波 小小問題!!請高高手來解惑.送P幣
Consider a TM(n) mode of propagation along the z
direction in the space between parallel conducting
planes
(a) Show that as the frequency ω approaches the
cutoff frequency the wavelength for that mode
approaches ∞.
(b) Show that the averaged Pointing vector ? =
?u?vg ?z, where ?u? is the average energy density
of EM fields.
希望盡量有詳細的計算過程，感謝!!
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