Optics, Crystall.
the part of a doubly refracted ray that has changed speed and vibrations in the principal plane of the crystal.
[ 1870-75 ]
Optics, Crystall.
the part of a doubly refracted ray that has changed speed and vibrations in the principal plane of the crystal.
[ 1870-75 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012