Infrared light therapy is a medical procedure involving projection of infrared waves unto a part of the body, to improve blood circulation and treat various ailments.
Examples of infrared waves are; solar infrared, thermal emissions from fire, LWIR communication systems, radiation in thermal imaging, infrared from electric heaters.
Infrared waves are electromagnetic waves with 700 nm to 1 mm wavelength and 300 GHz – 400 THz frequency, emitted by thermally-charged bodies. Infrared definition