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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。 g?Rq .py]! 大概就每天讀個一節。有沒有人要一起讀的? %zDi|WZ Page 7 D`.\c#;cN 1.3 Snell's Law of Refraction YfseX;VX Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light 1:./f|m as a fraction of the amount that light of a median wavelength is bent. |%3>i"Y@AK 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? +Q[SddI Δn/(n - 1) 是不是有什麼物理涵意? +>c%I&h}` R mo'3 300[2}Y]
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