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2012-02-14 15:31 |
relative dispersion
前天決定今年好好把 Modern optical engineering 讀完。 LHQ$0LVt>T 大概就每天讀個一節。有沒有人要一起讀的? ZCP
r`H Page 7 rb"J{^ 1.3 Snell's Law of Refraction M0+xl+c+ Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light
9/?@2 as a fraction of the amount that light of a median wavelength is bent. m?Tv8-1 這一段看不是很懂。有沒有人可以說一下為何要這樣定義?而不直接用 Δn 就好?或是用Δn/Δλ? `7v"( Δn/(n - 1) 是不是有什麼物理涵意?
Ez\TwK _,,w>q6K {5%u G2g
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