| over |
2012-02-14 15:31 |
relative dispersion
前天決定今年好好把 Modern optical engineering 讀完。 J8)l ,J" 大概就每天讀個一節。有沒有人要一起讀的? ;t0q
?9 Page 7 =\lw.59 1.3 Snell's Law of Refraction x'g4DYl Relative dispersion is given by Δn/(n - 1) and, in effect, expresses the 「spread」 of the colors of light o8X_uKEI as a fraction of the amount that light of a median wavelength is bent. sJZ2e6?n 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? *QQeK#$s Δn/(n - 1) 是不是有什麼物理涵意? t*hy"e{*a !=eNr<:V. ]In7%Qb
|
|