1. The problem statement, all variables and given/known data You have a light bulb where the filament (in vacuum space) starts to glow. This light hits the glass of the bulb at 90 degrees from distance R and is transmitted through the glass of thickness s into the air, of index of refraction nair. So light travels like this: vacuum -> glass (thickness s) -> air. How do you find the intensity of light transmitted? Answer should be in terms of the absorption coefficient α, nair, R, thickness s, and Iο. Index of refraction of a vacuum is 1. 2. Relevant equations Beer Lambert's law? Fresnel's Equations? 3. The attempt at a solution I tried using Fresnel's equations but couldn't incorporate thickness s , R, and the absorption coefficient α.