前天決定今年好好把 Modern optical engineering 讀完。 7~n<%q/6
大概就每天讀個一節。有沒有人要一起讀的? .G8+D%%.
Page 7 SC/|o
1.3 Snell's Law of Refraction [9dW9[Z+!
Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light k`ulDQu
as a fraction of the amount that light of a median wavelength is bent. }{/3yXk[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? J%]</J
Δn/(n - 1) 是不是有什麼物理涵意? `IL''eJug_
?hu}wl)
QS.t_5<U