Question 5 Question: Not complete Sir David Brewster discovered "Brewster's law" in 1812. Experimentally he found that at certain angles of incidence light with a certain polarization is perfectly transmitted Marked out of 1.00 (none is reflected). As a result when light is incident at this angle the reflected light is polarized. Consider light travelling through a material with refraction index n1 incident on Flag question a material with refraction index 72 at an angle OB " to the normal. n , Figure 1. Polarized light travelling through a medium with refractive index n1 is incident at Brewster's angle Ag (to the normal) on a block with refractive index 72. The reflected light is polarized, and the refracted light is not. Part 1) Write an expression for OR, the angle the ray makes with the normal in the medium with refractive index n2. OR = Note: You may assume here that you can use any angle in degrees inside any trig functions. Part 2) Brewster noticed that the reflected ray was polarized when the reflected light was perpendicular to the refracted light. In this case what is OB + OR? OB + OR = Part 3) Use these expressions to derive an expression for Brewster's angle in terms of nj and n2