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Velocity is initially reduced but then remains constant for as long as light is passing through a transparent medium like glass

elias2010
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  • Could you please elaborate on what kind of answers you expect. What do you mean be "remain stable"? If you are interested in a macroscopic description, why should it fluctuate? If you are interested in a microscopic description, this question has already been answered on SE. – Semoi Apr 16 '20 at 11:38
  • Not to fluctuate,to reduce.Divide medium in layers.Question is totally different and not duplicated. – elias2010 Apr 17 '20 at 23:41

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