Why does crystalline solid show different refractive indices in different directions?
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Why does crystalline solid show different refractive indices in different directions?
Why does crystalline solid show different refractive indices in different directions?
1. Crystalline solid has long range order of regular pattern of arrangement which repeats periodically over entire crystal.
2. Within the given pattern, the arrangements of different atoms or ions or molecules is different in different directions. Hence the properties like refractive indices in the different directions are different.
This shows that the crystalline solids are anisotropic in nature.