relative index of refraction

Definitions

Electronics

  • The ratio of the phase velocity of a wave in a given medium, to the phase velocity of the same wave in another medium. The ratio of the phase velocity of wave in free space, to that of another medium is the absolute index of refraction (1).
  • The ratio of the phase velocity of light in a given medium, to the phase velocity of light in another medium. The ratio of the phase velocity of light in free space, to that of another medium is the absolute index of refraction (2).
  • synonymrefractive index
  • synonymrelative refractive index
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