In Problem 87, we saw how reflection can lead to polarization of reflected light. Is this effect important for reflection of sunlight from a car’s windshield? Investigate this question by working through the following steps.
(a) Calculate Brewster’s angle for glass.
(b) Draw a ray diagram of the problem. Show the Sun, windshield, and driver along with the incident and refracted rays. The angle of incidence should equal Brewster’s angle found in part (a).

Data From Problem 23

In Chapter 23, we discussed the polarization of light by reflection. Figure P24.87 shows light that is both reflected and refracted as it passes from air into the glass with n = 1.60. The incident light is unpolarized, containing components with the electric field perpendicular to the plane of the drawing and parallel to this plane. When the reflected and refracted rays are precisely perpendicular, the reflected ray will be purely linearly polarized, with E S acted and refracted rays are precisely perpendicular to the plane of the drawing as indicated. Find the angle of the incident ray for which the refracted and reflected rays are perpendiculars. It is called Brewster’s angle 

Figure P24.87