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Electromagnetic fields and their impact on humans. Fundamentals of safe life

Fundamentals of Safe Life Activities (OBZhD)

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Spektr electromagnetic oscillations frequency reaches 1021 Hz. Depending on the energy of photons, it is divided into the area of ​​non-ionizing and ionizing radiation. In hygienic practice, non-ionizing radiation also include electric and magnetic fields.

К electromagnetic fields (EMF) of industrial frequency (50 Hz) include power lines, open distribution devices, including switching devices, protection and automation devices, measuring instruments. Long-term action of such fields leads to disorders that are expressed by complaints of headache in the temporal region, lethargy, sleep disturbance, memory loss, irritability, apathy, pain in the heart. And chronic exposure to such EMF is characterized by rhythm disturbance and slowing of the heart rate, while there are functional disorders in the central nervous and cardiovascular systems, in the composition of the blood.

The impact of an electrostatic field on a person is associated with the flow of a weak current through it. At the same time, electrical injuries are never observed, but it is worth paying attention to the fact that with a reflex reaction to current (sharp removal from a charged body), mechanical injury is possible when hitting adjacent structural elements, falling from a height, etc. The most sensitive to electrostatic field of the central nervous system, cardiovascular system, analyzers (irritability, headache, sleep disturbance, etc. are noted). In addition, there are phobias caused by fear of the expected discharge, a tendency to psychosomatic disorders with increased emotional excitability and rapid exhaustion, instability of pulse and blood pressure indicators.

EMF can be constant, pulsed, infra-low-frequency (with a frequency of up to 50 Hz), variable.

RџSЂRё permanent work in conditions of chronic exposure to magnetic fields, exceeding the maximum permissible levels, develop disorders of the functions of the nervous system, cardiovascular and respiratory systems, digestive tract, changes in the blood picture. With local exposure, vegetative and trophic disorders usually develop in areas of the body that are under the direct influence of magnetic fields, manifested by a sensation of itching, pallor or cyanosis of the skin, swelling and thickening of the skin, in some cases keratinization develops.

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