jamiesong9770 jamiesong9770

02-05-2022
Physics

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What is the minimum value that the index of refraction can have?.

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kolonneselini kolonneselini

02-05-2022

The answer is 1, but refractive indices less than 1 can occur and if the phase velocity of the light in the medium is faster than the speed of light. This often occurs close to the absorbance resonances of the material.

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