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5 January, 05:12

What is the refractive index of a medium?

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  1. 5 January, 05:19
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    The refractive index or index of refraction n of a material is a dimensionless number that describes how light propagates through that medium. It is defined as ... For example, the refractive index of water is 1.333, meaning that light travels 1.333 times faster in a vacuum than it does in water.
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