double re fraction

double refraction

noun Optics.
the separation of a ray of light into two unequally refracted, plane-polarized rays of orthogonal polarizations, occurring in crystals in which the velocity of light rays is not the same in all directions.
Also called birefringence.


Origin:
1870–75

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World English Dictionary
double refraction
 
n
Also called: birefringence the splitting of a ray of unpolarized light into two unequally refracted rays polarized in mutually perpendicular planes

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