Life safety. The impact of infrared radiation on the human body (the most important)

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Life safety. The impact of infrared radiation on the human body (the most important)

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18. IMPACT OF INFRARED RADIATION ON THE HUMAN BODY

Infrared radiation (IR radiation) - a part of the electromagnetic spectrum with a wavelength from 780 nm to 1000 microns, the energy of which, when absorbed in a substance, causes a thermal effect. Short-wave infrared radiation is the most active, as it has the highest photon energy that can penetrate into the tissues of the body and be intensively absorbed by the water contained in the tissues.

infrared rays provide The human body is mainly affected by heat, under the influence of which thermal shifts occur in the body, oxygen saturation of the blood decreases, venous pressure decreases, blood flow slows down and, as a result, disruption of the cardiovascular and nervous systems occurs. Irradiation with small doses of radiant heat is useful, but its significant intensity and high air temperature can have an adverse effect on humans.

Organs most affected by infrared radiation human: skin, organs of vision; with acute skin damage, burns, a sharp expansion of capillaries, and increased skin pigmentation are possible. With chronic irradiation, pigmentation changes can be persistent, and an erythema-like (red) complexion is observed. Acute disorders of the organs of vision include burns, conjunctiva, clouding and burns of the cornea, burns of the tissue of the anterior chamber of the eye. With acute intense infrared radiation and prolonged exposure, cataract formation is possible. IR radiation also affects the metabolic processes in the myocardium, the water-electrolyte balance in the body, the state of the upper respiratory tract, and the mutagenic effect of IR radiation is not excluded.

Visible radiation at sufficient energy levels can be dangerous to the skin and organs of vision. Pulsations of bright light cause a narrowing of the visual fields, affect the state of visual functions, the nervous system, and overall performance.

Broadband light radiation is characterized by a light pulse, the action of which on the body leads to burns of open areas of the body, temporary blindness or retinal burns. The retina can be damaged by prolonged exposure to light of moderate intensity, insufficient to develop a thermal burn.

Optical radiation in the visible infrared range at excessive density can lead to depletion of the mechanisms of regulation of metabolic processes, especially to changes in the heart muscle with the development of myocardial dystrophy and atherosclerosis.

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