Recent content by leily

Well in that case when I put my hand under a sheet of glass can I not see it in the IR?

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?

Hello, Why can some waves pass through materials but others can't. Why can visible light go through glass but infrared 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...