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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。 eKW^\ 大概就每天讀個一節。有沒有人要一起讀的? wOF";0EN Page 7 Qgxpq{y 1.3 Snell's Law of Refraction UHFI4{Wz Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light Q<T+t0G\O- as a fraction of the amount that light of a median wavelength is bent. BTDUT%Yfg 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? FS7@6I2Ts Δn/(n - 1) 是不是有什麼物理涵意? MP$9W) Y|~+bKa +AYB0`X)
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