refractive : Idioms & Phrases

Index

Absolute refractive index

  • (Opt.), the index of refraction of a substances when the ray passes into it from a vacuum.
Webster 1913

Refractive index

  • noun the ratio of the velocity of light in a vacuum to that in a medium
    index of refraction.
WordNet
  • . (Opt.) See Index of refraction, under Index.
Webster 1913

Relative refractive index

  • (of two media) (Opt.), the ratio of the sine of the angle of incidence to the sine of the angle of refraction for a ray passing out of one of the media into the other.
Webster 1913