How does light travel faster in optically rarer medium?

  • #1

Main Question or Discussion Point

Is it because that there are less molecules within one unit volume in rarer medium that light is able to travel through it easier?
 

Answers and Replies

  • #2
Andrew Mason
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Is it because that there are less molecules within one unit volume in rarer medium that light is able to travel through it easier?
Welcome to PF Anitha!

Light travels more slowly in any medium other than a vacuum. It is rather complex, actually. There is a very good FAQ on this.

AM
 
  • #3
Welcome to PF Anitha!

Light travels more slowly in any medium otheraman a vacuum. It is rather complex, actually. There is a very good FAQ on this.

AM
Thanks a ton! I clearly understood the reason
 

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