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    nykkyo's Avatar
    nykkyo Posts: 132, Reputation: 1
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    #1

    Jun 22, 2011, 05:30 PM
    Light reflection
    If the light intermingles with the mirror, then how much energy is lost in the reflection? Also, if E=h/lambda and h is constant, then the speed of light must change.
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #2

    Jun 22, 2011, 06:45 PM
    There's definitely always a finite amount of energy lost in the mirror due to the intermingling. The best mirrors, which I believe are dielectrics tuned to very, very specific wavelengths, are around 99% efficient. A typical bathroom mirror is much more lossy than that.

    And yes, the speed of light does change within a medium other than free space. The change in speed is what's responsible for refraction.
    nykkyo's Avatar
    nykkyo Posts: 132, Reputation: 1
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    #3

    Jun 22, 2011, 10:37 PM
    Again.
    Thanks
    nykkyo's Avatar
    nykkyo Posts: 132, Reputation: 1
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    #4

    Jun 23, 2011, 12:43 AM
    Do you mean the reflected wave is emitted by the quantum junps of the electrons changing energy levels, in the atom?
    jcaron2's Avatar
    jcaron2 Posts: 986, Reputation: 204
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    #5

    Jun 23, 2011, 05:13 AM
    I'm not really sure. It may ultimately come down to that, but I think the process is significantly more complicated, involving photon-phonon interaction and all that good stuff. I'm sure if you Google it, you can find way more info than I would know.
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