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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。 ]Q ]y* 大概就每天讀個一節。有沒有人要一起讀的? ?gUraSFU Page 7 (*P`
1.3 Snell's Law of Refraction Y,v9o Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light D ka8[z7 as a fraction of the amount that light of a median wavelength is bent. P7b"(G% 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? K=HLMDs Δn/(n - 1) 是不是有什麼物理涵意? i9zh
X1# F<4:P= MKvmzLh$)
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