1. The problem statement, all variables and given/known data 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. 2. Relevant 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) 3. 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!