Question

Pretend for a moment that you have infrared vision and you are looking at an empty room with nothing but the air you breathe. Do you see anything? Explain.

Answer 1

700 nm – 1 mm is the wavelength range if IR

The most striking thing you will see assuming you are in a dark room is yourself glowing. As our body is constantly generating heat we would light up in any IR device.

Now assuming the IR vision is very sophisticated, it might be possible to see the greenhouse gases in our atmosphere (also assuming sufficient concentrations). A greenhouse gas is a gas that absorbs and emits infrared radiation. The primary greenhouse gases in the atmosphere are water vapour, carbon dioxide, methane, nitrous oxide, and ozone.