by leily
Tags: transmission
leily is offline
Feb12-08, 08:10 AM
P: 3

Why can some waves pass through materials but others can't. Why can visible light go through glass but infra-red can't? I know it has to do with transmission but what is the fundamental processes? In as simple terms as possible? If anyone has any websites of books that might help please let me know.

Thank you for your help.
Phys.Org News Partner Science news on
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
TVP45 is offline
Feb12-08, 08:31 AM
P: 1,130
Why do you think IR can't go through glass?
leily is offline
Feb12-08, 08:55 AM
P: 3
I saw a picture of a hand behind a sheet of glass in IR. But I guess the reason why it can't see it is because the heat isn't transferred to the air?

TVP45 is offline
Feb12-08, 09:36 AM
P: 1,130


Are you near an incandescent light bulb? Turn it on and put your hand near it. Can you feel the heat?
leily is offline
Feb12-08, 10:24 AM
P: 3
Well in that case when I put my hand under a sheet of glass can I not see it in the IR?
malawi_glenn is offline
Feb12-08, 10:44 AM
Sci Advisor
HW Helper
malawi_glenn's Avatar
P: 4,739
i. is this HW question?
ii. I dont belive this is upper undergraduate level question.

You know that atoms of different kinds have different spectra, i.e the absorbtion lines are different for each element. The same holds for solids. Different solids absorbs Em rad at different wave lenghts. And this has to do with the so called band structure of the solid.

So depending on what atoms the solid are made of etc, different band structures arieses. You can think of these bands as the "orbitals" of the electrons in an atom. The bands tell you what electron can have.

Register to reply

Related Discussions
Transmission Coefficient Advanced Physics Homework 1
transmission resonances, QM Advanced Physics Homework 1
Information transmission Special & General Relativity 2
Slapstick Transmission General Engineering 1