We always say that the refractive index of glass is 1.5. Again we know for different wavelength of lights the refractive index is different. So for which colour/wavelength of light refractive index of glass is 1.5?
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Refractive index, measure of the bending of a ray of light when passing ... of incidence to the sine of the angle of refraction; i.e., n = sin i / sin r. Refractive index is also equal to the velocity of light c of a given wavelength in ... correctly, that the velocity of X-rays in glass and in other materials
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