text: I think U know the making of Infrared.\nBut I tell U\nWhen we heat any material, it's electrons gets exited to high energy levels by getting some energy and when they came back to their original orbit then they release this energy in the form of electromagnetic radiation.\nInfrared is one of the elecromagnetic radiation and when it falls at a material, it causes vibration to it. By this physical work the material gets heated.