What is the safety value of electromagnetic radiation?
China promulgated the "provisions of electromagnetic radiation protection", provides the electromagnetic radiation pollution equipment and the impact of the standard limit, only when the electromagnetic wave reaches a certain strength, only need to focus on protection.
According to the International Radiation Protection Association and the International Labor Organization, the safety strength of the electromagnetic field is 0.2-0.4 microtra (which is 24 hours of contact with the computer when the electromagnetic field safety limit), below this strength is no harm to the human body. Some specialized research institutions have tested the electromagnetic field strength of the computer and found that the intensity of the electromagnetic field close to the screen was 0.9, but at about 5 centimeters away from the screen, the intensity was less than 0.1, and then further to 30 centimeters (this was the computer operator's The habit between the body and the screen distance), its strength is almost impossible to detect. In addition, the electromagnetic waves in space is indeed ubiquitous, but in general, this electromagnetic radiation intensity is very small, will not cause harm to human health.
Added: China has a strict technical limit on electromagnetic radiation standards. In order to prevent electromagnetic radiation pollution, protect public health, national environmental protection, health and other departments since the 90s of last century, has issued a "environmental electromagnetic health standards" and other seven laws and national standards, the provisions of the classification of electromagnetic radiation classification: a High-frequency radiation is less than 10 μW / cm2 low-frequency radiation is less than 10 V / m; secondary standard (intermediate area, the human body can have a harmful impact)?
high frequency Radiation less than 40 μW / cm2 Low frequency radiation is less than 25 V / m. Because many electronic devices at the same time issued high frequency and low frequency electromagnetic radiation, so each device at the same time high frequency, low frequency test! The various data tested only show that the test sample has such radiation data.
