《英文msh詞典》Refractions,Double
[入口詞] Refractions,Double
[主題詞] Birefringence
[英文釋義] 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)