state the snell’s law – Purple Zone

Question: state the snell's law
- Keywords:
  snell's law
Asked by 976purple26 to Simon on 15 May 2018.
- Simon Masha answered on 15 May 2018:
  
  Snell’s law states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of phase velocities in the two media, or equivalent to the reciprocal of the ratio of the indices of refraction.

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