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

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

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  • #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.
 
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So there is no classical explanations but you need to invoke quantum theory?
 
  • #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.
 
  • #5
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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.
can give me an idea about the properties of fused silica
 

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