Filtration of sunlight through ordinary glass ?

[Hal.]

As sunlight passes from air through glass and back into air again , i.e. , through a window , what constituents will be extracted ?

[Leader Bee]

I would imagine the only thing that would be "extracted" would be energy in the form of heat.

[swansont]

You pass NIR and visible reasonably well, and filter out some other IR and UV

 

http://en.wikipedia.org/wiki/Soda-lime_glass

[Hal.]

http://en.wikipedia.org/wiki/Sunlight

 

http://en.wikipedia.org/wiki/Transmittance

Edited June 3, 2011 by Hal.

[swansont]

http://en.wikipedia.org/wiki/Sunlight

 

http://en.wikipedia.org/wiki/Transmittance

 

Is there a question here?

[Hal.]

Swansont , I understand the graph you provided and the link is totally relevant to what I am asking about . For the unknown reader who is yet to understand transmissivity and the different wavelengths that make sunlight , I provided the 2 links and the graph as background information .

 

As for a question , here I am again . Why , for soda lime glass , is the derivative of transmissivity with respect to wavelength so severe of a drop when the wavelength is in a narrow range around approximately 2.6 micrometres ?

[swansont]

As for a question , here I am again . Why , for soda lime glass , is the derivative of transmissivity with respect to wavelength so severe of a drop when the wavelength is in a narrow range around approximately 2.6 micrometres ?

 

There is presumably some transition(s) that absorb the light that has a cutoff at that wavelength.

[John Cuthber]

"Why , for soda lime glass , is the derivative of transmissivity with respect to wavelength so severe of a drop when the wavelength is in a narrow range around approximately 2.6 micrometres ?"

I think the essence of the answer is explained here

 

http://en.wikipedia.org/wiki/Perturbation_theory_(quantum_mechanics)#Time-dependent_perturbation_theory

 

It's a resonance effect.