The ct room is safe several meters away.

Someone should have seen Sina blog in June 1999 0 1 that electromagnetic radiation pollution threatened life safety. Our reporter Hu Qifeng has been recognized as the fourth largest pollution in the world after water pollution, air pollution and noise pollution, and "establishing the Beijing Electromagnetic Radiation Pollution Control Research Center as soon as possible" has also become a proposal of members of the Beijing Academy of Social Sciences and the Beijing Municipal Political Consultative Conference today. According to reports, the purpose of holding this seminar is to make the relevant policies of the Beijing Municipal Government on the prevention and control of electromagnetic radiation pollution more scientific. After listening to the arguments of many environmental experts, some representatives of the Municipal People's Congress and CPPCC members who participated in the seminar thought that electromagnetic radiation pollution was not easy to attract people's attention because of its concealment. In view of the fact that developed countries have formulated corresponding management methods and technical standards, it is suggested that the Beijing Municipal Government should also formulate management methods and technical standards for industries and departments that produce electromagnetic radiation, such as production environment, electrical and electronic products, electromagnetic wave protection products, radio stations, television stations, high-voltage transmission substation construction planning, and import and export of related commodities. Many experts call for research and development of new electromagnetic protection materials, antistatic materials, design of new electromagnetic shielding rooms and other practical products to solve the problem of electromagnetic pollution disturbing people and meet the urgent needs of national economy and national defense military departments such as computer room, command room, aerospace, weapons and equipment, missile spacecraft, satellite communication system, telegraph and telephone room, radio remote control measurement system, ground station, precision instrument room and so on. According to Professor Zhao Yufeng, director of the Electromagnetic Compatibility and Protection Research Office of Beijing Institute of Labor Protection Science, at present, electromagnetic radiation pollution is mainly generated by radiation sources such as high-voltage transmission lines, short waves, ultrashort waves, microwaves, electronic game machines, video displays, mobile phones, etc. For example, mobile phones answer phones and receive radio signals from base stations, which has little impact on people in the affected areas. However, when the mobile phone holder speaks, sound waves are converted into high-frequency electric waves through the mobile phone to transmit telecommunication signals, which are close to the transmitting antenna at the top of the mobile phone. So far, there have been many electromagnetic radiation pollution incidents at home and abroad. The United Nations Human Environment Conference has listed the prevention and control of electromagnetic radiation pollution as one of the environmental protection projects, and the voice of reducing electromagnetic radiation pollution and preventing interference and destruction is getting higher and higher. 1. The hazard event caused by strong electric field generated by high-voltage transmission lines is 1. In a small town in northern new york, a newly-built high-voltage transmission line passes through the air 60 meters above the ground, and sometimes a "crackling" sound is often heard. One night, it was dark, and people gathered under high-voltage lines, holding a fluorescent lamp in their hands. As a result, all the lights in my hand are on. People are more uneasy. Someone said, "This is too worrying. The wire is as high as 60 meters from the ground, and the electromagnetic energy radiated by it can actually make the fluorescent lamp emit strong light. Is it safe and reliable to live in this environment, and will it cause cancer? It is doubtful and I hope that experts will investigate and study. " There is a farm in Minnesota, USA. 1978, a power company set up a 765 kV high-voltage transmission line from the farm and officially started to send electricity. Because of the large current of this transmission line, the electric field intensity under it is as high as 1 10 thousand volts/meter, and people often hear the sound of "scratching" Due to the strong electromagnetic energy radiated by power lines, it is found that the leaves of plants under power lines wither, which affects the growth and development. Under this power line, if the human body comes into contact with tractors or other iron tools, it will produce electric sparks, and the body parts it touches will feel pain. People who work below often find that their hair stands on end because of the electric field force. The farmer Marilyn Guluba and her husband both demanded an investigation. They said, "Since this power line was built, the electromagnetic waves it sends out have made us feel like spiders crawling on us. People can hear it with their ears, and the skin can feel the effect of this electric field, but they can't see it with their eyes. " 3. A scientific research report published in1993, which holds the relevant investigation data of the three Nordic countries, points out that when the electromagnetic field generated by transmission lines reaches more than 2 milligauss, the incidence of leukemia in infants and young children increases by 2. 1 times, and the incidence of brain tumors increases by 1.5 times. 4.1993 65438+1On October 30th, scientists from Karolinka University in Stockholm, Sweden conducted a survey of 430,000 residents living near high-voltage power lines for a long time, and published a research result. Scientists have clearly pointed out that radio waves are directly related to cancer, especially brain tumors and childhood leukemia. Secondly, the hazardous event 1 caused by electromagnetic radiation generated by short wave and ultrashort wave, a typical example occurred in Chicago, USA. In Chicago, Illinois Institute of Technology built an advanced electronic scanning telescope at a cost of100000 USD for research and teaching. Results Due to the interference of ultrashort wave electromagnetic radiation emitted by nearby TV stations, the electronic scanning telescope failed and could not be used. This kind of similar interference incidents frequently occur in the United States, Japan, West Germany and other countries, resulting in automatic control device failure, high-speed electric locomotive misoperation or derailment, aircraft navigation error or interruption, missile guidance system failure and so on. , causing accidents and economic losses. 2. In the United States, due to the serious electromagnetic pollution in the local environment, patients who had placed pacemakers were caught in mold. There have been accidents in which the patient's heartbeat rhythm was seriously disordered because the working frequency of pacemaker was destroyed in the electromagnetic field environment. The occurrence of this kind of event makes many heart patients feel great anxiety. Thirdly, there were 65,438+0 harmful incidents caused by microwave radiation. In the early 1970s, there were 1 microwave pollution incidents in Japan, which caused shock and anxiety almost all over the world. At that time, the soldiers who manipulated and used the radar strongly protested that the radiation generated by the radar was harmful to the health because of obvious occupational hazards, and they all quit. "It was just a shutdown." An investigation was organized immediately after the incident, and it was found that the microwave radiation emitted by the radar was harmful to the human body, and the patient appeared, not the radiation. 2. 1962, the CIA discovered a "strange radio wave" and launched it at the American Embassy in Moscow. This "strange radio wave" is similar to the microwave emitted by radar, which was consciously emitted by the Soviet authorities from the US Embassy in the Soviet Union to the two buildings across the street from the embassy office building. Later, the Soviet Union put forward the requirement of testing blood samples on the grounds that "drinking water in Moscow causes diseases". The test results show that the total number of white blood cells in one third of people has increased by nearly 50%, which is one of the characteristics of leukemia. Later, the CIA made an experiment with monkeys under the same conditions. After three weeks of the experiment, the nervous system and immune system of monkeys became damaged. For those who have worked in this embassy, the incidence of cancer is obviously higher than the normal average, and two people have died of cancer. 1976, the State Council designated the U.S embassy in the Soviet union as "an important place to protect health". In order to prevent microwaves from entering the office, all windows are equipped with metal shields. The "strange radio waves" in Moscow continued until May 1979. Fourthly, the electronic game machine is a strong electromagnetic radiation source, and the radiation field intensity of most products on the market currently exceeds the national standard. The radiation radius is 100m, which causes serious interference and damage to TV programs and wireless communication. The roller coaster of an amusement park in Japan was disturbed by electromagnetic radiation generated by another electronic game machine nearby, which destroyed the normal work of the program control system of the roller coaster, causing the roller coaster to suddenly derail, causing many casualties. V. Radiation hazards of video terminal displays Due to the emergence of a large number of electronic computers and color TVs, the frequency and time of use have greatly increased. The influence and harm of electromagnetic radiation of video terminal display on human health has aroused widespread concern and strong response. Many countries in the world, such as the United States, Britain, France, Germany, Canada, Japan, Sweden, Singapore, Norway, Australia and other developed countries, have done a lot of research on the influence and harm of electromagnetic radiation on human health, and found that VDT mainly harms sensitive organs and parts such as eyes, head, skeletal muscle and skin. In addition, it also has adverse effects on pregnancy. Typical examples in this regard are: 1, 1985. Refugees and others investigated 395 workers exposed to VDT in insurance companies, airlines, posts and telecommunications, news organizations, etc. After working 5 hours a day and engaging in professional operation for a period of time, symptoms such as eye discomfort, skeletal muscle discomfort, headache and skin discomfort will appear, and the above four symptoms are significantly different from those in the control group. 2. There are 65,438+0,545 workers exposed to VDT in six industries in Massachusetts, including banking, communications, computers, hospitals, public enterprises and state federation. They were exposed to VDT for 0.5-7 hours every day, and found three major symptoms: eye discomfort, skeletal muscle discomfort and headache, which were significantly different from those in the control group. Most pioneers of VDT have temporary myopia, and their vision is greatly reduced. 6. Cell phone radiation hazard event 1, brain tumors and other diseases occur from time to time due to improper use of "cell phone". This has been confirmed in North America and Western Europe, which were the first areas to use this technology. Worst of all, the perennial users of "Big Brother" have suffered from brain malignant tumors. An Italian entrepreneur greatly improved his work efficiency after using the "mobile phone", but three years later, he found a malignant tumor in his brain, which was diagnosed by CT scanning. The lesion is near the top of the mobile phone. At the beginning of last year, an American businessman discovered that he had a tumor in his brain after using Big Brother for four years. After many treatments, he died because of the aggravation of his condition and ineffective treatment. In grief, his widow decided to sue the company that produced this wireless phone. This incident caused a shock wave in the United States and made people know "big brother" again. 2. A husband accused his wife of having a malignant brain tumor caused by the microwave radiation emitted by the mobile phone in the lawsuit against the mobile phone manufacturer. David Leonard of Madeira Beach believes that Susan Leonard (33 years old) died of malignant tumor on May 24th because she used the hand-held mobile phone he gave her. The lawsuit against the telephone manufacturer, Japan Electric Company, claimed that the tumor grew to a fatal degree because of the "improper antenna position of the telephone, which led to unsafe excessive microwave radiation in the brain where the tumor was found". He claimed that the location of the tumor was exactly the location of the telephone antenna when making a phone call. 3. There have been many accidents in Japan in which mobile phones interrupted the operation of infusion pumps, causing interference and injury to ventilators and ECG monitors. At present, Japan has banned the use of mobile phones in hospitals. Part of the disturbance incidents caused by electromagnetic radiation pollution in Beijing (I) The electromagnetic radiation interference pollution incident caused by the XX transmission tower in Beijing to the surrounding residents occurred in 1976. The radio transmitting station in Beijing is adjacent to residential areas and schools. Since the radio transmitting antenna is 100m away from the school and residential areas, more than 100 teaching staff and thousands of students in this school jointly complained to the National People's Congress and the All-China Women's Federation, telling them about the radiation hazards, and the response was very strong. (2) There are nearly 20 high-power plastic printing electronic impactors in the plastic printing workshop of Beijing No.3 Trademark Printing Factory, which will cause serious electromagnetic pollution when working. Because the workshop is close to the residential building, this electromagnetic radiation causes the TV sets of the surrounding residents to be unable to listen to it normally, and some residents simply put away their newly bought TV sets. Contradictions continue to develop. On 1980, the residents of the annex jointly complained and directly intervened in production, giving a warning that "construction is not allowed until hidden dangers are solved". (3) Dongcheng No.1 Plastic Factory is located in the east of Beijing Gulou. There are many residents close to the factory. The electromagnetic radiation of the heat sealing machine directly affects and destroys the audio-visual of the TV set. Residents have great opinions and complained many times. (4) There is an early warning radar in the headquarters of a certain department of Tongxian General Staff Department, which causes radiation pollution to the surrounding environment within several hundred meters when working. Two TV sets of a unit were "burned" and cable broadcasting was seriously disturbed; ×× CCTV and image network system, equipped with 586 microcomputer, NOVAJET.4 plotter, scanner, CD engraver, TV editor, camera and other equipment. In the process of work, mistakes often occur due to radar interference, and some work cannot be carried out, resulting in losses of people, money and materials. For example, video editing, radar waves have made it impossible to carry out the work, so we have to leave the station and transport the equipment to Tongxian Town to rent a house for editing. (V) Interference Harm of "Mobile Phone"1996 June-July, three infusion pump accidents occurred in Beijing medical system. After investigation, the accident was caused by the interference of "mobile" radio waves used by patients' families in the ward. Transfusion pumps, ventilators and ECG monitors are commonly used equipment in hospitals, which are mostly used to rescue critically ill patients and are extremely dangerous. Therefore, some developed countries have explicitly prohibited the use of "mobile phones" in hospitals, airplanes and other systems. A scientific research unit in Sweden has measured the electromagnetic radiation field strength of common household appliances. The results are listed in the following table: electromagnetic wave intensity (unit: micro Tesla) 3cm 30cm 1m razor15-1500 0.08-90.01-0.3 vacuum cleaner 200-800 2-200.1. Microwave oven 75-200 4-8 0.25-0.6 TV 2.5-50 0.04-20.010/5 washing machine 0.8-500.15-30.01. Coffee pot1.8-25 0.08-0.15 > 0.01toaster 7-10 0.06-0.7 01refrigerator 0.5-1.