ABSTRACT
If natural light is incident at Brewster’s angle on the intersurface, the reflected light has no component in the plane of incidence and is thus linearly polarized. The experiment consists in showing that when the light is incident at Brewster’s angle on a vertical blackened glass mirror, the reflected light can be extinguished with a polarizer, and that the vibration which it carries is vertical. A beam of natural, white light illuminates a glass cell filled with water under Brewster’s angle. The beam reflected by the surface of separation under Brewster’s angle is polarized linearly, the vibration being perpendicular to the plane of incidence.
