Brewster's angle

An illustration of the polarization of light that is incident on an interface at Brewster's angle. Brewster's angle (also known as the polarization angle) is the angle of incidence at which light with a particular polarization is perfectly transmitted through a transparent dielectric surface, with no reflection. When unpolarized light is incident at this angle, the light that is reflected from the surface is perfectly polarized. The angle is named after the Scottish physicist Sir David Brewster (1781–1868).

Explanation