1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Can a sphere has a critial angle

  1. Jun 23, 2004 #1
    can a sphere has a critial angle
     
  2. jcsd
  3. Jun 23, 2004 #2

    chroot

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    I'm afraid you'll have to be a little more specific.

    - Warren
     
  4. Jun 24, 2004 #3
    i mean why the water drop can total internal reflect and we can see a rainbow.I THINK CIRLCE DOES NOT HAS TOTAL REFLECT
     
  5. Jun 24, 2004 #4

    Moe

    User Avatar

    The light is refracted twice. Once when it enters the drop of water, and a second time when it exits. The angle of refraction depends on the wavelenght of the light. So red will be refracted at a different angle than blue. The whole thing works like a prism, and you get your rainbow. Is that what you wanted to know?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?