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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。 A8\U
CG 大概就每天讀個一節。有沒有人要一起讀的? 08zi/g2
3 Page 7 g2+l@$W 1.3 Snell's Law of Refraction lAdOC5+JX Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light w^ixMn~nLF as a fraction of the amount that light of a median wavelength is bent. <bEN8b 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? @?<N +qdH> Δn/(n - 1) 是不是有什麼物理涵意? Y&?|k'7 =?meO0]y F,'^se4&
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