One of the explanations of electromagnetic radiation contamination:
Electromagnetic radiation exceeds the intensity of the human body can withstand or the limits allowed by the instrumentation constitutes electromagnetic radiation pollution. Instruments and equipment can allow the limit when it constitutes electromagnetic radiation pollution.
Second, to explain the types of electromagnetic radiation pollution office mainly involved in the sixth:
1, radio and television transmission equipment, the main sector for the local radio and television transmitters and relay stations.
2, communications radar and navigation transmitting equipment communications, including short-wave transmitters, microwave communication stations, terrestrial satellite communication stations, mobile communication stations.
3, industrial, scientific research, medical high-frequency equipment
These types of equipment to convert electrical energy into heat or other energy to be utilized, but accompanied by electromagnetic radiation generated and leaked out, causing environmental pollution in the workplace. Industrial electromagnetic radiation equipment: mainly for the high-frequency furnace, plastic heating machine, high-frequency media heating machine. Medical electromagnetic radiation equipment: mainly for high-frequency physiotherapy machine, ultra-short-wave physiotherapy machine, ultraviolet radiation physiotherapy machine. Scientific research electromagnetic radiation equipment: mainly for the electronic gas pedal and a variety of ultrasonic devices, electromagnetic cooker.
4, electromagnetic radiation interference in the transportation system, including: electrified railroads, light rail and electrified railways, trams, trolley buses and so on.
5, the power system electromagnetic radiation, high-voltage transmission lines, including overhead transmission lines and underground cables, substations, including power plants and transformer stations.
6, household appliances electromagnetic radiation, including computers, monitors, televisions, microwave ovens, wireless phones and so on.
Three, electromagnetic radiation pollution hazards:
A), electromagnetic radiation is the main cause of cardiovascular disease, diabetes, cancer mutation. The United States of America, a cancer treatment foundation for some of the electromagnetic radiation damage to a sample of patients, the results show that people working in the vicinity of high-voltage lines 24 times faster.
Two, electromagnetic radiation on the human reproductive system, the nervous system and the immune system caused direct harm. Damage to the central nervous system, the head of the long-term impact of electromagnetic radiation, light cause insomnia, headache, dizziness, fatigue, memory loss, irritability, depression and other neurasthenia, heavy cerebral cortex cells weakened activity, and cause brain damage.
Three), electromagnetic radiation is caused by pregnant women miscarriage, infertility, teratology and other pathologies predisposing factors.
Electromagnetic radiation is harmful to the human body in many ways, women and the fetus is particularly vulnerable, the survey showed that: 1 to 3 months for the embryonic period, subject to strong electromagnetic radiation may cause limb defects or deformities; 4 to 5 months for the fetus to grow up, subject to electromagnetic radiation can lead to immunity function is low, the body is weak after birth, poor resistance.
D), excessive electromagnetic radiation directly affects children's tissue development, bone development, vision loss; liver hematopoietic function decline, serious can lead to retinal detachment.
Injury to the eye power density and the formation of cataracts at the time of the threshold curve is not a straight line, irradiation of the rabbit's eye at each frequency seems to require a microwave power density threshold, below which the curve, even if continuous irradiation does not produce eye damage. Above 500 MHz, the minimum power density for cataract formation is about 150 mW/cm2, and the possibility of eye damage caused by frequencies below 500 MHz cannot be completely excluded.
V), electromagnetic radiation can make men's sexual function decline, women's internal division disorder, menstrual disorders.
In 1998, the World Health Organization (WHO) in the latest revision of the computer screen and workers' health problems, pointed out that: in the computer screen work environment, some factors may affect the outcome of pregnancy. The first affected is the male, long-term exposure to electromagnetic radiation, it is possible to make the male sperm reduction, so that the sperm genetic deformities and may become sterile or teratogen; secondly, pregnant women, it has been reported that in front of the computer 1 week of work for more than 20 hours of pregnant women to give birth to the probability of deformities than ordinary pregnant women to be 2-3 times higher than the probability of having a girl.
Four, protection methods:
For the indoor environment of office equipment, household appliances and cell phones to bring the hazards of electromagnetic radiation, people should take the following protective measures:
● Consciously abide by the national standards, the correct use of computers, cell phones, microwave ovens and other office equipment and household appliances.
● Electrical appliances should not be placed too centrally. In the bedroom, put as few or even no electrical appliances as possible.
● Electrical appliances should not be used for too long, try to avoid using multiple appliances in the same way.
● Pay attention to the distance between people and electrical appliances.
● Shorten the use of electric shavers and hair dryers as much as possible.
● When sitting in front of a computer for a long period of time, it is best to wear a radiation-protective coat or vest, apron and other protective equipment. In the video display terminal, to add fluorescent screen protective net.
● Often drink tea or take spirulina tablets to strengthen the body's ability to resist electromagnetic radiation.
● For household appliances that emit large amounts of radiation, such as electric mattresses, microwave ovens, and electromagnetic stoves, stainless steel fiber cloth can be used to make a cover, or chemical coating can be used to reflect and absorb the electromagnetic radiation blocking.
● Proper use of cell phones. In the instant the cell phone is turned on, the amount of electromagnetic radiation released is the largest, instantly up to 2000mGs (milligauss). It is reported that the field strength of 10-150 mGs, can make the body inhibit cancer gene R53 lesions, thus increasing the chance of cancer. The intensity of electromagnetic radiation can be reduced by half after the cell phone is turned on for tens of seconds. Therefore, it is best to answer the phone after the cell phone is connected for a few seconds. When answering the phone, try to keep your head away from the cell phone, or use a separate headset and microphone to answer the call. At the same time, try to minimize the duration of the call, and it is best to take turns listening to the left and right ears. Usually do not hang an open cell phone on your chest to prevent heart damage. Especially for women, electromagnetic radiation has a more significant effect on endocrine and pregnant women.