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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。 YN#i^( 大概就每天讀個一節。有沒有人要一起讀的? ^+^#KC8]W Page 7 )" q$g& 1.3 Snell's Law of Refraction p?2\9C4 Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light 9^,MC&eb as a fraction of the amount that light of a median wavelength is bent. UR44
iA] 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? Va"Q1 *" Δn/(n - 1) 是不是有什麼物理涵意? fwK5p?Xhm YD_hg#=n OZ3iH%
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