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Among the various physical environmental factors that may have adverse effects on humans, includes dangerous electromagnetic field (EMF) power frequency of 50 Hz. Human senses do not perceive electromagnetic fields. Man cannot control the level of radiation, and assess imminent danger, a kind of electromagnetic smog. Electromagnetic radiation in all directions has the impact on the person working with the device emitter, and the environment. It is known that the magnetic field arises around any object, working on the electric current. Elementary source of EMF is a normal conductor, which forms the alternating current of any frequency, i.e., almost any electrical device that is used in human life is the source of EMF. Every house requires EMF shielding to protect them from getting effected by these field. Electrical networks entangle the walls of our apartment, as seen during their installation, before plastering walls. Above all, it includes the layout of networks to all sockets and switches, as well as various types of cables and extension cords of electrical appliances. Add to that are electric wiring on the floor of the house to the electric meter and auto-protect each apartment, the power system of elevators, lighting corridors, and entrances of houses, etc. In addition to internal dangers, external electricity should not be ignored as they are also local sources of EMF, close to the person. These include hospitals, physiotherapy equipment, household, radio and powered elements that run by electricity from the industrial universe frequency of 50 Hz. Measurements of the magnetic fields produced by electrical appliances have shown that their short-term impact is even stronger than the long-term presence of man away from power lines. EMF Exposure Effects The degree of biological effects of EMF on the human body depends on the frequency of oscillation of the field and its intensity. The human body is a vessel filled with a liquid whose conductivity is explained by the presence in it of hemoglobin in human blood containing complexes of iron and protein. Thus, there are favorable conditions when external alternating magnetic field can direct the protein in the glandular body current and enable the interaction of red blood cells to the field. In general, intensive-frequency electromagnetic fields cause the following damages: Violation of the functional state of the central nervous, cardiovascular and endocrine systems; Sexual dysfunction; Deterioration of embryonic development; Dizziness, insomnia, hypersomnia, lethargy, fatigue, decreased accuracy of movements; Changes in blood pressure and heart rate, the occurrence of pain in the heart, followed by headache and arrhythmias etc. All these changes in the human body are recorded in medical examinations (blood tests, ECG, etc.). During the some research it was reported that the source of cancers can be power-frequency electromagnetic fields. Protection against EMF To protect people from the harmful effects of EMF there is a need to apply regulations and standards, which are a compromise between the benefits of new technologies and new techniques and the possible risk caused by that use. EMF shielding is a very reliable option available that is also beneficial. Preventive measures provide permanent control of the electromagnetic environment through electromagnetic monitoring and forecasting the development of the whole organization to the electromagnetic environment.
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