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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 VLcR
大概就每天讀個一節。有沒有人要一起讀的？ @v'D9 ?
Page 7 d3$<|mG$
1.3 Snell's Law of Refraction NWg\{a
Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light 7 L]?)2=
as a fraction of the amount that light of a median wavelength is bent. |x4yPYBL
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? sHuz10
Δn/(n - 1) 是不是有什麼物理涵意？ So^`L s;S
e.+)0)A-
2%8Y-o?
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