Visible radiation (light)
- a section of the general electromagnetic spectrum, consisting of 7 colors (red, orange, yellow, green, blue, blue, violet). It has the ability to penetrate the skin to a depth of 1 cm, but it acts mainly through the visual analyzer - the retina. The perception of visible light and its color components has an indirect effect on the central nervous system and thereby on the mental state of a person. Yellow, green and orange colors have a beneficial effect on a person’s mood, blue and violet have a negative effect. It was established that red and orange colors stimulate the activity of the cerebral cortex, green and yellow balance the processes of excitation and inhibition in it, blue inhibits neuropsychic activity. These properties of light should be taken into account when colorizing the interiors.
Visible radiation has a shorter wavelength than infrared rays, so its quanta carry higher energy. However, the effect of this radiation on the skin is carried out mainly by infrared and ultraviolet rays adjacent to the boundaries of its spectrum, which have a thermal and chemical effect. Thus, incandescent lamps, which are a source of visible light, have up to 85% of infrared radiation.
A fundamentally new method of light therapy is successfully developing using quantum generators emitting non-scattering beams of uniform light of the visible range. This makes it possible to use the laser beam in surgery in the form of a “light scalpel”, in ophthalmology - for “welding” the retina of the eye when it is peeled off. With an unfocused laser beam, the light energy absorbed by cells and tissues has an active biological effect. This type of irradiation is successfully used for degenerative dystrophic diseases of the spine, rheumatoid arthritis, long-term non-healing wounds, ulcers, polyneuritis, arthritis, bronchial asthma, stomatitis.