A thin film coating (thickness of 0.45 m) on a pair of glasses eliminates reflection of certain wavelengths. The index of refraction of the coating is 1.6 and the index of refraction of the lenses is 1.4. Assume light in air is incident perpendicular to the surface of the glasses. Draw the light as straight line rays, not sinusoids.

a. Draw the path of light (as straight lines, not sinusoids), labeling the rays that interfere to eliminate reflection from the surface of the glasses. At each interface, label all transmitted and reflected light rays. Note which rays undergo a phase shift upon transmission or reflection, and the size of this phase shift. b. What frequencies of visible light (4.2 x 10^14Hz - 7.5 x 10^14Hz) will not be reflected by these sunglasses?