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Brewster's law

noun Optics.
  1. the law that light will receive maximum polarization from a reflecting surface when it is incident to the surface at an angle (angle of polarization or polarizing angle) having a tangent equal to the index of refraction of the surface.
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Origin of Brewster's law

named after Sir David Brewster (1781–1868), Scottish physicist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018