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Why does glass not permit long wavelength infrared to pass through?

  1. Jan 16, 2010 #1
    Why does glass not permit long wavelength infrared to pass through?
     
  2. jcsd
  3. Jan 16, 2010 #2

    ZapperZ

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    Certain glass (fused silica) can!

    You might want to start by reading the FAQ in the General Physics forum. The entry on photon speed through a solid might be relevant.

    Zz.
     
  4. Jan 16, 2010 #3
    So there is no classical explanations but you need to invoke quantum theory?
     
  5. Jan 16, 2010 #4

    ZapperZ

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    No, you need to invoke the property of the material! And that will require knowledge of solid state physics.

    Zz.
     
  6. Aug 26, 2010 #5
    can give me an idea about the properties of fused silica
     
  7. Aug 26, 2010 #6
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