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How harmful is WiFi radiation? How harmful is WiFi radiation to human body

How harmful is WiFi radiation? How harmful is WiFi radiation to human body

Sihai network: Nowadays, with the popularity of smart phones and terminals, people are more and more dependent on WiFi, and friends circle will pop up an article about how dangerous WiFi radiation is, alarmist, so how big is WiFi radiation?

How much radiation does WiFi radiate?

Experts say that the radiation intensity is inversely proportional to the distance, not to mention through the reinforced concrete. At this time, the radiation value is only one tenth or even one dozens of the national limit.

In fact, WiFi has no essential difference from mobile phone signals. It belongs to microwave, which is generally located in the 800 mhz-1900 MHz band. At present, there is no really strong scientific basis to show that it will damage the human DNA or protein structure, thus affecting the development of fetus and the health of pregnant women.

Is' all kinds of 'radiation harmful to human body in life?

According to the director of Nanjing women and children's reproductive center, radiation is everywhere in life. Besides WiFi, TV sets, microwave ovens, printers, computers, mobile phones, hair dryers and other items will generate radiation. Experiments show that the radiation power of these electrical appliances is not large, and the impact on human body is small, basically within the safe range, and only the skin surface can be affected, as long as it is not It is close to the body, and the impact on the human body can be ignored.

According to the physiologist of Radiotherapy Department of Nanjing General Hospital of Nanjing Military Region, the magnitude of electromagnetic wave radiation in life is very small, which is hundreds of millions of times less than the radiation needed for tumor treatment. Compared with one CT, the radiation is 10000 times worse. The radiation of the computer is less than 10-9sv. When the body is close to the TV, the radiation is 10-6sv. One meter away from the TV, the radiation is reduced to 10-9sv. The difference between the two is 1000 times.

There are two main effects of radiation on human body. One is that the radiation amount reaches a certain degree. In medicine, it is generally believed that radiation above 10-3 may cause certain impact on the body. The other is long-term accumulation in radiation environment. The amount of electromagnetic radiation in our life, only 24 hours of continuous exposure to this radiation environment, hundreds of years later will cause harm to human body.

For this kind of electromagnetic radiation, experts from the radiation center station of Nanjing Environmental Protection Bureau said that the electromagnetic radiation of household appliances, computers and other electronic products has strict national standards. The environmental protection department of our country has formulated relevant standards as early as 1988, and the protection standard of public radiation is 12V / m. And the radiation value encountered in life is 100 times lower than the standard. "Once the radiation value in our living area exceeds the national standard, the environmental protection department will take relevant measures immediately. "Experts say we don't need to worry about electromagnetic radiation in our lives. The World Health Organization (who) has summarized the relevant research in the past 30 years, and believes that the existing evidence is not sure that the exposure to low-intensity electromagnetic fields will have any health effects.

Chest X-ray, CT are harmful to pregnant women

The real radiation harmful to pregnant women is medical radiation, which is the largest of all kinds of radiation. Chest X-ray, X-ray, CT and other radioactive examinations will cause damage to some cells in the body. If these damaged cells fail to repair themselves (or repair abnormally), they will remain in the body, like a 'time bomb'. In the presence of low immunity or cancer promoting factors, they will start to copy crazily and become a cancer hidden danger. So pregnant women and children should try to stay away from these places.

What is radiation?

Radiation can be divided into ionizing radiation and non ionizing radiation. Ionizing radiation, including nuclear radiation and X-ray, is harmful; non ionizing radiation, including electromagnetic field generated by ultraviolet, visible light, mobile phone, computer, high-voltage line, substation, mobile phone base station, television and radio, is less harmful. What people usually call 'electromagnetic radiation' belongs to non ionizing radiation. But people sometimes confuse the concepts of "electromagnetic radiation" and "ionizing radiation", which leads to misunderstanding and panic.