1. The problem statement, all variables and given/known data A randomly polarized beam of light hits a water surface at Brewster angle. What is the intensity of the transmitted and reflected beams? The refractive index of water is n = 1.33 2. Relevant equations 3. The attempt at a solution Since the light is randomly polarised, it should have equal electric field amplitudes in all directions? Am I supposed to sum up the electric fields along the p polarisation and s polarisation axis before using fresnel equations to calculate the intensity?