[理工] [電磁] 一些觀念請益
幾題觀念想請問一下各位 謝謝
1.
http://i.imgur.com/o5uGn.jpg
這題求Pr/Pi時 為什麼還要除以2呢？
功率反射係數不是Γ的平方嗎!?
2.
http://i.imgur.com/S69Sq.jpg
這題提到電場最小的地方 課本提到節點是φ-2βz'=π
不過算了一下他的角度好像是φ-2βz'=0 請問是我哪邊遺漏了嗎!?
3.
http://i.imgur.com/kkyCY.jpg
這題解答一開始就寫d=λ/2時反射最強
多層介電質 中間那層d=λ/2不是假裝看不到 直接求一三層就好了嗎
而為什麼會反射最強呢!?
謝謝大家m(＿"＿)m
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