But they are negligible
Some people are afraid of magnetic fields affecting their bodies, but according to tests, the effect of a magnetic field on a person is only one-fifth of that of a television.
What is electromagnetic pollution? What are its hazards?
Electromagnetic radiation pollution, also known as electronic fog pollution, electromagnetic wave pollution, is a high-voltage lines, substations, radio stations, television stations, radar stations, electromagnetic wave transmission towers and electronic instruments, medical equipment, office automation equipment and microwave ovens, radios, televisions, computers, and cell phones and other household appliances work produced by a variety of different wavelengths of frequency of the electromagnetic wave, these electromagnetic waves fill the space, can penetrate the These electromagnetic waves fill the space and can penetrate a variety of substances, including the human body. Subjected to excessive radiation dose, human cells will be killed or killed by a large area.
What are the hazards of electromagnetic radiation on the human body? "The harm of electromagnetic radiation on the human body is divided into thermal effect, non-thermal effect and cumulative effect." The so-called thermal effect, that is, high-frequency electromagnetic waves on the biological organism cell 'heating' effect, causing an increase in body temperature, as electromagnetic waves are penetrating the biological surface layer of the direct role of the internal tissues, often the surface of the organism can not see anything, while the internal tissues have been severely 'burned' The effects on the cardiovascular system are palpitations, headache, insomnia, some women's menstrual disorders, bradycardia, decreased blood flow, sinus arrhythmia, dirty cell lesions, leukopenia, decreased immune function, etc.; the effects on the visual system are reduced visual acuity, cataracts, etc.; the effects on the reproductive system are reduced sexual function, reduced quality of sperm for men, and spontaneous abortions in pregnant women and fetal malformations. "
Non-thermal effect is the impact of low-frequency waves, that is, the human body was electromagnetic wave radiation, body temperature did not significantly increase, but the body's intrinsic weak electromagnetic field has been interfered with, but also will cause serious harm to the human body. Cumulative effect that the human body is radiated too late to recover and radiation damage, and over time become permanently sick.
People's worries about electromagnetic pollution are not unfounded. As early as 2000, the State Environmental Protection Administration completed the first national survey of electromagnetic radiation pollution sources, the survey results show that radio communications and radio and television transmission systems emit electromagnetic radiation has become a new public nuisance. China Consumers Association on August 6, 2001 issued Consumer Alert No. 9: daily life must prevent electromagnetic radiation. State Economic and Trade Commission?1999?75 document clearly pointed out that: due to the use of computers in the use of electromagnetic radiation, long-term use of human health will bring certain effects, should take effective protective measures to avoid and reduce the impact of electromagnetic radiation on human health.
With the economic development, scientific and technological progress, man-made electromagnetic environment will be unavoidable. Early experts predicted that the urban space man-made electromagnetic energy will grow at a rate of 7% to 14% per year, by 2000, the highest density of electromagnetic energy in the urban environment has increased 26 times more than in the 1970s, to 2025 can increase to 700 times, with the progress of science, the harm of electromagnetic pollution will be further revealed.