In crystals {anisotropic crystal}, refractive index can vary with light-propagation direction {birefringence}|. In birefringence, incident light divides into two light rays that polarize in planes at right angles. Isotropic crystals, glasses, liquids, and gases have the same physical properties in all directions. Most crystals are isotropic.
Physical Sciences>Physics>Wave>Superposition>Refraction
5-Physics-Wave-Superposition-Refraction
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Date Modified: 2022.0224