refractive index

Definitions

General Science

  • noun the ratio of the speed of refracted light in a vacuum to its speed in the medium being studied

Electronics

  • The ratio of the phase velocity of a wave in free space, to the phase velocity of the same wave in a given medium. Also called absolute index of refraction (1).
  • The ratio of the phase velocity of light in free space, to the phase velocity of light in a given medium. Also called absolute index of refraction (2).
  • synonymrefraction index
  • synonymrelative index of refraction

Food

  • noun a measure of how light is refracted when passing through a medium, used for measuring the purity of substances such as oil or sugar
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