• synonyms

Malus' law

[muh-loos; French ma-lys]
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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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Origin of Malus' law

named after E. L. Malus (1775–1812), French physicist
Also called law of Malus, Malus cosine-squared law [koh-sahyn skwaird] /ˈkoʊ saɪn ˌskwɛərd/.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018