Overview
Air (n1 = 1.0) surrounds a solid glass cube (n2 = 1.5) with edge length a = 7.0 cm. An incoming ray of light strikes the cube at the midpoint of face #1 (the front face). The refracted ray strikes the midpoint of the edge that is shared by face #2 (the top face) and face #6 (the back face). What angle of incidence θ1 did the ray of light make with face #1? For the limits check, investigate what happens to θ1 if the glass cube’s index of refraction approaches that of air (n2 → n1).