Malus' law
[ muh-loos; French ma-lys ]
/ məˈlus; French maˈlüs /
noun Optics.
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.
Also called
law of Malus,
Malus cosine-squared law
[koh-sahyn skwaird] /ˈkoʊ saɪn ˌskwɛərd/.
Origin of Malus' law
named after E. L.
Malus (1775–1812), French physicist