- #1
Ryan B
- 9
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Homework Statement
b) White light travels from crown glass into ethanol. If the angle of incidence in crown
glass is 60.00 degrees (not sure how to insert degree sign), what is the angular spread
between the red and violet parts of the visible spectrum in the ethanol? Illustrate your
answer with a light-ray diagram.
Homework Equations
Sini = 60o
ni (for red light in crown glass) = 1.520
nr (for violet light in crown glass) = 1.376
nR (Ethanol) = 1.36
(ni)(Sini) = (nR)(SinR)
The Attempt at a Solution
For red light:
(ni)(Sini) = (nR)(SinR)
(1.52)(Sin60) = (1.36)(SinR)
SinR = (1.52)(0.866)/1.36
SinR= 0.968
I'm not sure if this is right but, if it is, I'm confused at how to get the angle on my caculator.
Can someone let me know if I'm on the right track?
Thanks!