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Many people believe that all electromagnetic radiation is harmful. In fact, most electromagnetic radiation does not cause harm to the human body. Although we live in an electromagnetic radiation environment all the time, it will only cause harm to the human body if its strength exceeds the national standard for electromagnetic radiation. Electromagnetic radiation pollution. 
The amount of electromagnetic radiation on the front of the TV is also much smaller than the amount of electromagnetic radiation on the back. The amount of radiation in front of the TV screen is very small. Therefore, when watching TV, it is not appropriate to be too close to the TV set. It is not appropriate to watch TV continuously for a long time. When the microwave oven is in standby mode, the electromagnetic radiation around it is very small. As it works, the amount of electromagnetic radiation will increase dramatically, especially at startup. However, as the distance from the microwave oven increases, the amount of radiation will decrease accordingly. When the distance exceeds 1 meter, the amount of radiation will drop a lot, so when the microwave oven is working, people should try to stay away from it.
What is electromagnetic radiation? What is the detection method?
First, let's take a look at radiation. Generally, radiation can be divided into ionizing radiation and non-ionizing radiation. Ionizing radiation usually only occurs around radioactive elements, nuclear reactors, and is closely related to people's lives. Another type of non-ionizing radiation, also known as low energy electromagnetic waves, is commonly referred to as electromagnetic radiation, which consists of an electric field and a magnetic field. Generate interactive changes. There are two main types of electromagnetic radiation, one is electromagnetic phenomena, such as electromagnetic radiation generated by light, lightning and geomagnetic fields; the other is artificial electromagnetic radiation, which is mainly converted from electrical energy, such as electromagnetic radiation generated by electrical appliances, communication equipment, etc.
So how does electromagnetic radiation hurt the human body? In fact, the main reason is the three effects it produces. First, the thermal effect: more than 70% of the human body is composed of water. Water molecules are rubbed by electromagnetic waves to cause mutual friction, which causes the body to heat up, thereby affecting the normal operation of internal organs. In severe cases, it can cause irreparable damage to organs. When a microwave of 1000 W power directly illuminates the human body, it can even cause death within a few seconds. Second, non-thermal effects: the body's organs and tissues have weak electromagnetic fields. They are stable and orderly. Once they are disturbed by external electromagnetic waves, the weak electromagnetic field in the balance will be destroyed and the normal circulation function of the human body will be destroyed. . 3. Cumulative effect: After the thermal effect and the non-thermal effect are applied to the human body, the damage to the human body is not repaired in time. If the electromagnetic wave is irradiated again, the degree of damage will accumulate, and it will become a persistent morbidity and life-threatening. For groups exposed to electromagnetic radiation for extended periods of time, even small amounts of power and low frequency may cause unexpected lesions and should be vigilant. So the electromagnetic radiation that is common in life should attract our attention? How to prevent it? In fact, the most common thing in life is the electromagnetic radiation of electrical appliances. For example: computer, TV, microwave, hair dryer, refrigerator, mobile phone, etc. Researchers have found through experiments that the electromagnetic radiation in front of a computer monitor usually only needs a piece of fiberglass to block it. If there is no fiberglass, try to keep the distance from the computer screen more than 30 cm and the electromagnetic radiation will be below the safe value. Second, the radiation from the host computer is greater than the radiation from the display because the radiating portion of the body is typically an electric motor, an electrical coil, an electric fan, etc., and these components are maintained at greater distances. More than 60 cm from the human body.
The air outlet of the blower is much smaller than the electromagnetic radiation at the rear end. When it is outside 8-10 cm, the amount of radiation will decrease rapidly, so do not put the hair dryer on the scalp when using it. The coil and motor of the refrigerator are located at the rear of the refrigerator. The front of the refrigerator has less radiation than the rear. Even if you open the refrigerator door, don't spend too much time, and don't get too close to the back of the refrigerator. The amount of radiation of the mobile phone during the call is also much higher than the amount of radiation during standby. Especially when the mobile phone is connected, the amount of radiation is very high, so the mobile phone should not be moved within 1-2 seconds after the mobile phone is powered on. long.
Although there is a lot of electromagnetic radiation in our lives, we don't have to be overly nervous. Scientific understanding and prevention of electromagnetic radiation pollution is very necessary. In general, electromagnetic radiation is not strong, but due to its cumulative effect, we should also pay attention to it as much as possible in life, from the source. All household appliances, office equipment, mobile phones, etc. should try to avoid long-term operation. Care should be taken to maintain the distance between them during operation. When the device is paused, turn off the power and do not put it in standby mode. Even with weak electromagnetic radiation, radiation accumulation occurs for a long time. Don't concentrate appliances too much and try to separate them. In addition, you can eat more foods rich in vitamin A, vitamin C and protein, such as carrots, tomatoes, kelp, lean meat, animal liver, etc., which can enhance the body's ability to resist electromagnetic radiation.
What is the detection method of electromagnetic radiation?
Electromagnetic radiation management agency: Radio Management Committee, Human Settlements Committee.
Management and monitoring means of the Radio Management Committee and the Habitat Environment Committee: Measurement and evaluation of electromagnetic radiation using electromagnetic radiation detectors, electromagnetic radiation testers, electromagnetic radiation analyzers, electromagnetic radiation measuring instruments, electromagnetic radiation measuring instruments, etc. The standard is ordered to rectify.