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Malus' law

[ muh-loos law; French ma-lys ]

noun

, Optics.
  1. the law stating that the intensity of a beam of plane-polarized light after passing through a rotatable polarizer varies as the square of the cosine of the angle through which the polarizer is rotated from the position that gives maximum intensity.


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Word History and Origins

Origin of Malus' law1

Named after E. L. Malus (1775–1812), French physicist

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