Beneficial Infrared Heat Waves
Each “hot” body (body temperature above the absolute zero point of about -273 ° C) emits infrared radiation. The amount of energy emitted and the wavelength distribution of the radiation depend on the temperature of the body. The warmer is a body, the more energy in the form of infrared radiation it gives off and the shorter is the wavelength of the radiation.
Natural infrared radiation sources are the sun and the fire. The infrared portion of the solar radiation reaching the ground is just under 50%. The pleasant feeling of warmth while being in the sun is appreciated by a large proportion of the population.
