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How does refraction of light take place?

  1. Sep 1, 2010 #1
    how does refraction of light take place?And why does it always shift towards the normal while travelling from rarer to denser medium,why not away from normal?
     
  2. jcsd
  3. Sep 1, 2010 #2
    Re: Refraction

    Did you check Wikipedia?
     
  4. Sep 1, 2010 #3

    Andy Resnick

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    Re: Refraction

    Conservation of momentum.
     
  5. Sep 9, 2010 #4
    Re: Refraction

    If it is conservation of momentum,then why does'nt the light bend away from the normal
    with the same angle it bends towards normal?there would also be conservation of momentum,is'nt it?
     
  6. Sep 9, 2010 #5
    Re: Refraction

    Do you think diffraction is the cause of refraction?
     
  7. Sep 9, 2010 #6
  8. Sep 9, 2010 #7

    Andy Resnick

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    Re: Refraction

    I don't understand what you mean. When light enters a more optically dense medium, it refracts towards the normal. When it exits back to the less dense medium, it refracts away from the normal.
     
  9. Sep 9, 2010 #8

    Redbelly98

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    Re: Refraction

    Here is as good an explanation that I know of. Read the paragraph titled "Refraction" at this link:
    http://esfscience.wordpress.com/category/a2-physics/page/2/ [Broken]​
    (You are looking for this figure:
    [PLAIN]http://esfscience.files.wordpress.com/2008/10/soldiers.gif?w=300&h=260) [Broken]

    I am sure the OP meant denser in the sense of having a higher refractive index, not in the mass-per-unit-volume sense of the word.
     
    Last edited by a moderator: May 4, 2017
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