Birefractions

《英文msh词典》Birefractions
[入口词] Birefractions
[主题词] Birefringence
[英文释义] The property of nonisotropic media,such as crystals,whereby a single incident beam of light traverses the medium as two beams,each plane-polarized,the planes being at right angles to each other. (Cline et al.,Dictionary of Visual Science,4th ed)