With the expansion of cities and the development of science and technology, the problem of electromagnetic radiation has become increasingly prominent. At present, electromagnetic pollution has become the fifth largest public hazard after air pollution, water pollution, solid waste, and noise pollution. Recently, the reporter interviewed relevant experts on electromagnetic radiation. Experts said that exposure to electromagnetic radiation generally causes problems such as headaches, insomnia, and irregular heart rhythms. At the same time, for some people's eyes may have an impact, vision loss, skin diseases, etc., and may cause cancer. Special attention should be paid to the elderly, children, pregnant women or patients with pacemakers. Electromagnetic radiation may also lead to miscarriage in pregnant women. In addition, people who are sensitive to electromagnetic radiation and who have long-term exposure to overdose electromagnetic radiation should take preventive measures.
In the urban living environment, there are many sources of electromagnetic radiation, such as radio and television towers, such as microwave communication stations, such as substations, and the level of radiation harm produced varies. In fact, whether for experts or the public, urban electromagnetic radiation pollution is still a subject that has not been thoroughly studied and information is still insufficient. Now, there are radio and television towers around the world and in every city. Each large-scale residential area is likely to be adjacent to substations and microwave communication stations. How should residents living in TV towers or other radiation sources be prevented? This is a topic that many people are very concerned about. Experts summed up several “codes†for preventing electromagnetic radiation in daily life.
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Code 1 "Outside the Doors and Windows"
There are already many ways to prevent electromagnetic radiation. From the family's point of view, there are metal shielding nets and metal-containing shielding glass. If the windows of the living room or bedroom are facing the TV tower, metal screens and metal-containing shield glass can be installed on the windows of the balconies and in the windows of the bedrooms. Both of these things can filter the electromagnetic radiation very well. The role of In particular, it is best to remember to use a metal screen and a metal-containing screen glass to connect the ground wire and transmit the radiation to ground through the ground wire. In addition, because the frequency band and power transmitted by the TV tower are different, the specifications of the selected shielded network and shielded glass are different, and the size of the metallic network aperture must be determined according to the wavelength of radiation in order to be effectively prevented.
In addition, the use of anti-electromagnetic radiation curtains is also a very effective way. There are many textiles on the market that are specifically designed to prevent electromagnetic radiation. Using these textiles as curtains can also effectively reduce the harmful effects of electromagnetic radiation.
Code 2 "Preventive Measures"
If you have a metal screen and metal shield glass, you can consider another "self-precaution." At present, there are electromagnetic radiation protective clothing of various specifications, colors and styles on the market, such as aprons, maternity wear, underwear, trousers, etc. Since electromagnetic radiation is the most harmful to children, the elderly, and pregnant women, these groups must pay special attention to One “self-prevention†can effectively re-isolated part of electromagnetic radiation. Moreover, this "self-defense" also has a good "filtering" effect on the electromagnetic radiation of household appliances.
Code 3 “prevention first†In fact, rather than taking preventive measures, it is better to know it earlier. Experts suggest that residents living near the TV tower can buy an electromagnetic radiation tester by themselves. The price is about two or three hundred yuan. They often test the intensity of electromagnetic radiation at home and then check whether they exceed the national standards. You can also ask the local environmental protection inspection department to go to the door for inspection. If you exceed the standard, you can take measures to prevent it as soon as possible, and second, you can make a complaint to the environmental protection department.
In addition to these remedial measures, Code 4 “Home Furnishings†may allow some things to be “settled†in advance at home. For example, in the renovation, try not to let the bedroom and the living room face the direction of the TV tower. The bedroom is the place to rest. The living room is the place where the activity lasts for the longest time. These two places are facing the radiation source and have the greatest harm to health. Therefore, in the home furnishing arrangement, in the possible range, keep the bedroom away from the direction of the TV tower, so that the living room can also avoid directly facing the TV tower.
Code 5 "Electrical appliances should not be close to the bedroom" In addition to these homework, some common sense should be understood. For example, do not put a lot of electrical appliances together, and try not to place the appliance in the bedroom or near the bedroom. Otherwise, it will have an impact on human health.
Relevant small data
The current national radiation safety limit standard
The medium and long-wave electromagnetic radiation safety standards mainly used for broadcasting are as follows:
A standard (less than 10v/m) is a safety zone. It is an area where all people (including infants, pregnant women, and the elderly, sick and disabled) who have lived, worked and lived for a long time under the electromagnetic wave intensity of the environment will not suffer any harmful influence.
The secondary standard (less than 25 v/m) is the middle zone. It is an area where all people (including infants, pregnant women, and the sick and the sick) who have lived, worked and lived for a long time under the electromagnetic wave intensity of the environment may cause potential adverse reactions. In areas exceeding the secondary standards, it may cause harm to the human body. Impact; Greening or planting crops can be done in this area, but it is forbidden to build residential houses and all public facilities where people are active. The safety standards for ultra-shortwave electromagnetic radiation, which are mainly used in televisions, are as follows: The primary standard (less than 5v/m) is the safety zone. It is an area where all people (including infants, pregnant women, and the elderly, sick and disabled) who have lived, worked and lived for a long time under the electromagnetic wave intensity of the environment will not suffer any harmful influence.
The secondary standard (less than 12v/m) is the middle zone. It is an area where all people (including infants, pregnant women, and the sick and the sick) who have lived, worked and lived for a long time under the electromagnetic wave intensity of the environment may cause potential adverse reactions. In areas exceeding the secondary standards, it may cause harm to the human body. Impact; Greening or planting crops can be done in this area, but it is forbidden to build residential houses and all public facilities where people are active.
The Eiffel Tower in Paris, France, may be the most famous television broadcasting tower in the world. Its height is 320 meters and it is a landmark building in Paris. Built in 1886, the Eiffel Tower was built for the 1889 Universal Exposition. It was probably long ago dismantled by the French if it had been highly educated to use radio waves to develop communications and radio and television.
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