Brewster's law

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The extent of the polarization of light reflected from a transparent surface is a maximum when the reflected ray is at right angles to the refracted ray. The angle of incidence (and reflection) at which this maximum polarization occurs is called the Brewster angle or polarizing angle. For this angle iB, the condition is that taniB = n, where n is the refractive index of the transparent medium. The law was discovered in 1811 by the British physicist David Brewster 1781–1868).

Subjects: Physics.

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