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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。 [>U =P` 大概就每天讀個一節。有沒有人要一起讀的? i@#fyU)[G Page 7 XSz)$9~hk 1.3 Snell's Law of Refraction y j C@ Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light '#@tovr as a fraction of the amount that light of a median wavelength is bent. =GSe$f? 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? L)j<;{J/Q0 Δn/(n - 1) 是不是有什麼物理涵意? rnTjw
"% 4z> SI\Ss xc6A&b>jI
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