檢視各向异性介质的原始碼

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|<center>'''各向异性介质'''<br><img
src=" https://ts1.cn.mm.bing.net/th/id/R-C.0753f082d18b158fcd341d30b9dce0f7?rik=IYnITB9Xty9j8g&riu=http%3a%2f%2fwww.dingdx.com%2ffile%2fupload%2f202112%2f23%2f1459488883.jpg&ehk=qE9PwNWnvS0s%2bHPpIluC5M0TTdrF74bpRMBn%2bdAIh8A%3d&risl=&pid=ImgRaw&r=0" width="280"></center><small>  圖片來自优酷</small> 
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物理性质具有方向特性的介质

各向异性介质（anisotropic medium）是物理性质具有方向特性的介质。各向异性意味着不同方向的不同性质。这种介质的物理或机械性能（吸光度，折射率，[[电导率]]，拉伸强度等）沿着不同的轴测量时产生差异。各向异性的一个例子是通过[[偏振器]]的光，还有例如[[木材]]，一个方向比另一方向更容易被折断。