Relation between critical angle and refractive index

Relation between critical angle and refractive index

Relation between critical angle and refractive index
Relation between critical angle and refractive index

For crown glass of refractive index n = 1.5, the critical angle c is about 42°. In the case of water (n = 1.33) it is about 49°. These values are obtained from the above equation, using a table of sines.

Relation between critical angle and refractive index
Relation between critical angle and refractive index

 

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