White light is incident on an equilateral prism with light parallel to one side.
a) If the index of refraction of the prism is 1.52 for red and 1.54 for violet, find the angular spread as the light enters the prism.
b) Find the critical angles for each of these colors in the prism?
c) Find the angular spread as the light leaves the prism?
d) If the whole experiment were submerged in water, n=1.33, determine what is the angular spread?