The Naked Scientists

The Naked Scientists Forum

Author Topic: Why does light slow down when it hits diamond?  (Read 2902 times)

Offline Samvolta

  • First timers
  • *
  • Posts: 5
    • View Profile
Why does light slow down when it hits diamond?
« on: 24/03/2010 15:43:58 »
I had read in an article a few weeks back about the speed of light. Scientists had measured light speed when the light bounced off of certain objects/compounds and it remained relatively constant and similar. However, when light hit a diamond, its speed slowed down significantly. Any clarifications as to why?

Thanks


Mod edit - Please format your subject as a question - it helps to keep the forum tidy and easy to navigate.  Thanks.
« Last Edit: 24/03/2010 18:48:52 by Samvolta »


 

Offline imatfaal

  • Neilep Level Member
  • ******
  • Posts: 2787
  • rouge moderator
    • View Profile
Why does light slow down when it hits diamond?
« Reply #1 on: 29/04/2010 13:13:31 »
Any links or more details on the article?  The speed of light certainly varies whilst it is passing through a different medium - this is quantified in the refractive index.  The speed of light in a vacuum is constant but as it enters media of higher density the speed decreases - by about 1.5 times less in glass and 2.5 times less in diamond.  the use of exotic materials can even 'stop' beams of light!  But I would love to read anything that claims that light can have two different speeds within the same medium (after a reflection or refraction)
 

The Naked Scientists Forum

Why does light slow down when it hits diamond?
« Reply #1 on: 29/04/2010 13:13:31 »

 

SMF 2.0.10 | SMF © 2015, Simple Machines
SMFAds for Free Forums