What are the infrared, far-infrared lights and the light of life?
The optical waves emitted by the sun are also reflected by a prism, are divided into visible lights i.e. the red, orange, yellow, green, cyan, blue and purple lights and invisible lights including radio waves, microwaves, infrared lights, ultraviolet lights, x-rays, r-rays, etc. The optical waves beyond the red lights are referred to as the infrared lights with the wavelength of 0.77-1000 u. The inferred lights can further be divided into the far-infrared light (long Cwave infrared light), medium-wave infrared lights and short-wave infrared lights. Among them, the far-infrared lights with the wavelength of 8-14 u are of considerable health-caring function. Therefore they are praised as the improvement lights and lights of life.
