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extraordinary ray

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noun Optics, Crystallography.

the part of a doubly refracted ray that has changed speed and vibrations in the principal plane of the crystal.

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Origin of extraordinary ray

First recorded in1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for extraordinary ray

extraordinary ray

noun

optics the plane-polarized ray of light that does not obey the laws of refraction in a doubly refracting crystalCompare double refraction, ordinary ray
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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