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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。 lO9{S=N 大概就每天讀個(gè)一節(jié)。有沒有人要一起讀的? We]X+>BlO Page 7 @"s\eL,r 1.3 Snell's Law of Refraction ;f-|rC_" Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light %6<Pt as a fraction of the amount that light of a median wavelength is bent. lq@Vb{Z 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? skcMGEB Δn/(n - 1) 是不是有什麼物理涵意? HHZ!mYr Vk_*]wU 2LYd
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