[請益] 光波動問題
A 92-nm-thick coating of MgF2 (n=1.39) on glass
acts as an antireflection coating for light with a wavelength of 510 nm.
Without the coating, the intensity of reflected light is I=C(a2) ,
where a is the amplitude of the reflected light wave
and C is an unknown proportionality constant.
Let I' be the intensity of light reflected from the coated glass
at wavelength λ .
Find an expression for the ratio I'/I as a function of the wavelength λ
where λ is in nm.
This ratio is the reflection intensity from the coated glass
relative to the reflection intensity from uncoated glass.
A ratio less than 1 indicates that the coating is reducing the reflection
intensity.
題目大致上看得懂
可是抓不到方向
最主要是不知道Ｉ和λ之間的相關性要如何去轉換
最上面那一大段是主問題
第二段是其中的第一小題
麻煩會的人提示一下該從哪裡開始下手
謝謝：Ｐ
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