| over |
2012-02-14 15:31 |
relative dispersion
前天決定今年好好把 Modern optical engineering 讀完。 7a# 4tqM#
大概就每天讀個一節。有沒有人要一起讀的？ '7D,m
H
Page 7 bKj%s@ x
1.3 Snell's Law of Refraction 0`)iIz
Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light k=4N(i/s
as a fraction of the amount that light of a median wavelength is bent. SF}<{x_
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? rSxxH]-
Δn/(n - 1) 是不是有什麼物理涵意？ TlI<1/ fP}
^Y u6w\QM
YFE&r
|
|
