IF is NOT heat. as a matter of fact, IF is a low energy radiation. So, very few heat. It is what bodies at low temp (like a human being) radiates the most. Hig

IF is NOT heat. as a matter of fact, IF is a low energy radiation. So, very few heat. It is what bodies at low temp (like a human being) radiates the most. Higher energie bodies also radiates higher energy light, such as visible light and UV.