Electromagnetic pollution is the fourth public hazard to mankind.
Zhao Yufeng, member of electromagnetic specialty of Chinese Institute of Electronics.
The professor said that any charged body has electromagnetic radiation, and when the intensity of electromagnetic radiation exceeds the national standard, it will produce negative.
Surface effect, causing human pathological changes. At present, electromagnetic pollution has been regarded as the second most important pollution,
Noise pollution is the fourth largest public hazard to mankind.
According to reports, in our lives, electromagnetic radiation pollution sources are everywhere, including TV broadcast towers,
Radar station, communication transmitting station, substation, high-voltage line, electronic instrument, medical equipment, automation.
Equipment, computers, mobile phones, microwave ovens, induction cookers and even subway trains will all cause electromagnetic radiation pollution.
Experts from the National Radio Interference Standardization Committee said in an interview that electromagnetic radiation
The intensity of electromagnetic wave is long wave, medium wave, short wave and ultrashort wave, and the frequency of microwave increases in turn.
The higher the frequency, the greater the impact; Second, look at the distance. The closer the distance, the greater the harm to people, especially high power.
Under high-voltage lines or near high-power transmitting stations, the harm to human body is more obvious. In addition, it depends on the angle.
The emission of electromagnetic waves is directional, and the radiation received at different angles is also different.
These factors, combined with the detection of labor protection agencies, show that mobile phone base stations and paging stations
Antennas are generally built on high-rise buildings, and generally live in buildings because of the refraction of barriers between floors and surrounding buildings.
People and nearby residents will not have adverse effects. Of course, if you happen to be at the same height as the cell phone antenna.
On a plane, and
The distance is only 10-20 meters, which is greatly affected. Radio and television transmission towers have high power,
The impact on the surrounding residents is slightly greater.
According to experts, in the past, high-voltage transmission lines, radio transmission towers and so on. It's empty around, but
With the expansion of the city, some residential areas are even separated from high-voltage lines by a wall, and buildings are built higher and higher.
The possibility of exposure to electromagnetic radiation increases. However, due to the complexity of various influencing factors, it must go through
The exact value of electromagnetic radiation in a certain place can only be determined by the field measurement of professional institutions.