The harm of electromagnetic radiation is really so sensationalized?
In fact, human beings have always lived in an electromagnetic environment. The Earth itself is a large magnetic field, and both thermal radiation and lightning on its surface can generate electromagnetic radiation. In addition, the sun and other planets also produce electromagnetic radiation from outer space. But the natural electromagnetic radiation is not harmful to the human body, the human body poses a threat to the environment caused by pollution is artificial electromagnetic radiation.
As early as 168 years ago, the British Faraday discovered a wonderful phenomenon: the electric current through the media can produce electric and magnetic fields, which is later called electromagnetic induction phenomenon. 1880s, people use the principle of electromagnetic induction, the establishment of the world's first power station. From then on, mankind took a big step into the application of electromagnetic radiation era.
From the first global communication in 1901, to the large-scale use of mobile communication, and the necessary color TV, refrigerator, the application of electromagnetic radiation has been y into all aspects of human life. While fully enjoying the convenience and comfort brought by electromagnetic radiation, people also feel its negative effects day by day. If the electromagnetic radiation in the electromagnetic compatibility has caused the navigation system, medical information system, industrial process control system and information transmission system out of control, interfere with people's radio and television listening ......
It is heard that household appliances, electronic equipment, mobile communication equipment and other electrical devices, as long as in the operation of the use of the state, its The surrounding area will have electromagnetic radiation. I have also heard that electromagnetic radiation can penetrate a variety of substances, including the human body. Some people therefore compare the pollution generated by electromagnetic radiation to the "invisible killer". Then electromagnetic radiation on human health will cause much harm?
The reporter interviewed Zhao Yufeng, a professor at the Beijing Institute of Labor Protection Science.
Professor Zhao said: "Electromagnetic radiation and electromagnetic pollution are two concepts, although electromagnetic radiation is everywhere, all the time, but electromagnetic pollution only after electromagnetic radiation exceeds a certain intensity (i.e., the limit of safety and health standards), only to the human body to produce a negative effect, resulting in headaches, insomnia, memory loss, blood pressure increases or decreases, and the heart appears to be bounded by the abnormalities of such symptoms. The negative effect on the human body is only after the electromagnetic radiation has reached the limit of safety and health standards. Such as long-term operation in the environment of electromagnetic radiation super strength, serious may cause some people miscarriage, cataracts, and even induced carcinogenicity ......"
Zhao Yufeng frankly, electromagnetic radiation on the human effect, although widespread, but not terrible. Different people or the same person at different ages on the ability to withstand electromagnetic radiation is not the same, even in the excessive environment, does not mean that all people will get sick, so there is no need to electromagnetic radiation "grass". Of course, the elderly, children, pregnant women or patients with pacemakers, sensitive to electromagnetic radiation and long-term work in the environment of electromagnetic radiation in excess of the dose of people should take precautions.
For daily life exposure to electromagnetic radiation generated by electrical products, may endanger health, the China Consumers Association on August 6 issued a warning: life must prevent electromagnetic radiation. Experts reminded consumers:
● Do not place household appliances too centralized or often used together, so as not to expose themselves to the risk of excessive doses of radiation. In particular, TVs, computers and refrigerators should not be placed in the bedroom.
●All kinds of household appliances, office equipment, cell phones, etc. should be avoided for a long time. Such as television, computers and other electrical appliances need to be used for a longer period of time, should pay attention to every hour to leave once, using the way to look into the distance or close your eyes, in order to reduce eye fatigue and the impact of radiation.
●When electrical appliances are suspended, it is best not to leave them in standby mode, because at this time a weak electromagnetic field can be generated for a long time will also produce radiation accumulation.
●The use of various electrical appliances, should maintain a certain safety distance. Such as eyes away from the distance of the TV screen, generally about 5 times the width of the screen; microwave ovens open to leave a meter away, pregnant women and children should try to stay away from microwave ovens; cell phone use, should try to make the head and cell phone antenna distance away from the phone, it is best to use the separation of the headset and the microphone to answer the phone.
●Living and working in the high-voltage lines, radar stations, television stations, electromagnetic wave transmission towers near the people, patients wearing pacemakers and people living in the modern electrical automation environment, especially weaker resistance to pregnant women, children, the elderly, etc., should be equipped with shielding protective clothing to block electromagnetic radiation.
●TV, computers and other electrical equipment with a display screen can be installed electromagnetic radiation protection screen, the user can also wear anti-radiation glasses. Radiation generated by the display screen may lead to dry skin, accelerate skin aging and even lead to skin cancer, so you should wash your face in time after use.
●The electromagnetic radiation emitted by cell phones is the greatest when they are turned on, so it's best to answer the phone when it rings for a second or two or when the phone is ringing twice.
●Eat more carrots, tomatoes, kelp, lean meat, animal liver and other foods rich in vitamins A, C and protein to strengthen the body's ability to resist electromagnetic radiation.
"In fact, electromagnetic radiation in the end on human health has no effect is not what fresh issue." Chinese Academy of Preventive Medical Sciences researcher Li Tianlin told reporters, "domestic and foreign experts and scholars on electromagnetic radiation research and comments have been up to half a century, but due to the purpose of the study, methodology, conditions (exposure to electromagnetic radiation sources of distance, time, biological models, etc. different) and other factors are inconsistent, the world's experts and scholars on the biological effects of electromagnetic radiation research results and views are not consistent. The results and views of the experts and scholars around the world on the biological effects of electromagnetic radiation are not consistent. Therefore, what exactly are the effects and hazards of electromagnetic radiation on the human body need to be further explored."
However, Li Tianlin believes that, as a large country, the relevant authorities in China should develop a national unified electromagnetic radiation safety and health mandatory national standards as soon as possible. So that manufacturers can follow this standard research and development of ultra-low electromagnetic radiation appliances, equipment, to protect the safety of consumers. At the same time the management of electromagnetic radiation into the normal scope of social environmental protection, effective protection of consumers, the legitimate rights and interests of workers.
Reporters on the development of electromagnetic radiation standards interviewed several departments concerned, learned that the past Ministry of Health, Ministry of Electronics Industry (now merged into the Ministry of Information Industry), the State Environmental Protection Administration, the army and other departments, were developed by the industry electromagnetic radiation safety standards, but there is no single mandatory national standards for electromagnetic radiation safety. It is reported that China is currently working on the development of mandatory national standards for electromagnetic radiation, is expected to be introduced by the end of this year.
According to the State Environmental Protection Administration experts, China's electromagnetic radiation environment is relatively good, comparable to the 1950s and 1960s, when China faced with water pollution, air pollution, there are signs of emergence, far from the serious point. But from now on we should be strict management, prepare for a rainy day. Because social and economic development is inseparable from the application of electromagnetic radiation. If the electromagnetic pollution to the point of environmental intolerable, and then want to further economic development will be difficult.