Is there any harm to the human body if you are in close contact with WiFi for a long time?

WiFi signal belongs to electromagnetic waves, it is actually not essentially different from mobile phone signals, all belong to the microwave band in electromagnetic waves, generally located in the 800 MHz-2500 MHz band, there is no really strong scientific basis to show that it will destroy human DNA or protein structure, thereby affecting human health. The main effect of WiFi signals on the human body is the thermal effect. The thermal effect is mainly the friction and heat generation of polar molecules in living organisms under the action of microwave high-frequency electric field, which is mainly water in the human body.

The power of the WiFi signal is very small, and the tissues of the organism absorb less microwave energy, and it can use its own thermal regulation system to dissipate the absorbed microwave energy (heat) through blood circulation to the whole body or outside the body. The impact of wifi signal on the human body is minimal, completely within the safe range, as long as it is not close to the wifi signal generator for a long time, the impact of wifi radiation on the human body is completely negligible. The level of WiFi radiation is one percent of the national standard, and the Ministry of Environmental Protection does not make it a regulatory object, that is, exempt from management.

This shows that the management also believes that the wifi signal is safe for people. <>

Wireless routers emit negligible radiation. Televisions, refrigerators, and even the sun are all radiating in everyday life. The transmitting power of China's wireless LAN products is not more than 10MW, while the standards of other countries are relatively relaxed, such as:

The upper limit of the transmission power of wireless LAN products in Japan is 100MW, and in some countries in Europe and the United States, it is about 50MW. When the power of the mobile phone is high, it can reach more than 1W, and the power of most wireless routers is between 50MW and 100MW, while the power of the wireless network card is generally below 10MW. If you want to avoid this little bit of radiation, you can not use it, but it is too inconvenient.

When using, you can pay attention to the following aspects: place the wireless router away from people, away from the bedroom, try to avoid the elderly, children and pregnant women from close and long-term contact with wireless routers and other equipment, and turn off the power before going to bed at night. <>

Radiation can be divided into two kinds, one is ionizing radiation, which has high energy and strong penetration, and is usually harmful to the human body, such as nuclear radiation, X-rays used in hospital CT shooting, etc., and the other is hidden non-ionizing radiation, which is relatively low in energy, for example, we often touch wifi and mobile phone signals in our lives, and the impact is negligible.

In fact, Wi-Fi, like light in nature, is a kind of radiation in a broad sense, but this radiation is not harmful to the human body within a reasonable range according to the current scientific understanding. According to the safety ceiling set by the International Commission on Non-Ionizing Radiation, the safe range of radiation to the human body is 10 watts per square meter. And in life, our common wireless routers work between 30 500 milliwatts.

Last year, a non-governmental environmental protection organization conducted a test in the Zenglang Hall, and at a distance of 1 centimeter next to the Wi-Fi antenna, the power density was measured to be microwatts square centimeters, which is also less than the 40 microwatts square centimeters specified by China's regulations. In recent years, the non-governmental science popularization organization "Science Squirrel Club" has also cracked rumors about "Wi-Fi spermicide". According to Jiao Shuming, a member of the organization and a doctor from the Department of Electronic Engineering of the City University of Hong Kong, although there have been studies at home and abroad that believe that electromagnetic radiation is related to the incidence of diseases, the research is only conjecture and has not been widely recognized.