Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Light through a medium

  1. Nov 29, 2007 #1
    I understand that the speed of light in different mediums (like water) is slower than that of light in a vaccume. I've also read about some expiriments done in which light had been slowed down to a quite imaginable speed, like 70 Km/h. What causes light to slow down in such instances? Is it just bouncing around a lot, or do the photons actually change speed? If the photons chance speed, WHY?!
  2. jcsd
  3. Nov 29, 2007 #2


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    You may want to start by reading an entry in the FAQ in the General Physics forum.

  4. Nov 29, 2007 #3
    Ah! Sorry, I'll check that first next time.
    Thank you for your help.
  5. Nov 29, 2007 #4


    User Avatar
    Science Advisor
    Gold Member

    Nevertheless A.I. welcome to these Forums and keep asking the questions! :smile:

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Light through a medium
  1. Light In A Medium (Replies: 45)