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What is the meant by isotropic?
Substance having a physical property that has the same value when measured in different directions .Amorphous solids are isotropic as they exhibit same physical properties in all the directions.Amorphous substances differ from crystalline solids and resemble liquids in another important respect. The properties such as electrical conductivity, thermal conductivity, mechanical strength and refractive index are the same in all directions. Amorphous substances are, therefore, said to be isotropic. Liquids and gases are also isotropic.


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