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Math Help - Refraction!

  1. #1
    Senior Member sakonpure6's Avatar
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    Refraction!

    Hi,
    I have some questions regarding refraction because it has been a long time since I touched on it and it is going to be on my Physics quiz!

    1-If a beam of light goes from air to another substance, will it slow down? or speed up?

    2-If it speeds up, does that mean that the angle of refraction is going to be smaller than the incident? If it slows down, would the angle be bigger than the incident?

    3- Do you measure the angle of incident and refraction from the normal (vertical line perpendicular tot he surface) or from the horizontal surface?
    Thank you for your time!
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  2. #2
    MHF Contributor
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    Re: Refraction!

    Hey sakonpure6.

    The first answer will depend on the material refractive index and the second one will depend on the refraction identities. The answer to these and three is here:

    Fresnel equations - Wikipedia, the free encyclopedia
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