REFRACTIVEINDEX

Refractive index

In optics the refractive index or index of refraction n of a substance is a dimensionless number that describes how light, or any other radiation, propagates through that medium. It is defined as

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refractive index

Noun

  1. The ratio of the speed of light in air or vacuum to that in another medium.


The above text is a snippet from Wiktionary: refractive index
and as such is available under the Creative Commons Attribution/Share-Alike License.

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