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

[quantum123]

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

 

[ZapperZ]

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.

 

[quantum123]

So there is no classical explanations but you need to invoke quantum theory?

 

[ZapperZ]

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

Zz.

 

[hycarbon]

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

 

[Dr Lots-o'watts]

can give me an idea about the properties of fused silica

http://www.sciner.com/Opticsland/FS.htm