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
Convective heat transfer coefficient h, is a measure of the thermal resistance of a thin layer of immobile fluid sandwiched between a heat exchanger and a fluid medium.
Examples of convective heat transfer are; OTEC pumped systems, domestic water heating, geothermal reservoir dynamics, blood circulation and electric fan operations.