The extraordinary ray neither obeys the refractive law, nor has certain index of refraction in nonisotropic medium.
非常光线在各向异性媒质中传播不遵从折射定律，亦无确定的折射率。
Starting from Harding's equation which is based on isotropic foamed materials, a new closed cell proportion equation that is suitable for nonisotropic foamed materials was deduced; The data demonstrate that the new model is more realistic and closer to the field monitoring results.
二，在各向同性模型的Harding方程的基础上，推出了各向异性泡沫绝热材料的闭孔率测定方程；
TM wave in nonisotropic nonlinear dielectric slabs
各向异性非线性介质平板波导中的TM波
Electrostatic shielding and pair correlation function of nonisotropic plasmas