Computers, TVs, mobile phones, hair dryers... How much electromagnetic radiation do we have in our family radiation sources? How long can we avoid these radiations when we use them? Recently, we are electromagnetically concentrating on various household appliances in our enthusiastic readers' homes. Radiation test, you may wish to refer to our test data, and live in harmony with the radiation source in your home. This article refers to the address: http:// Experimental content: measuring the radiation amount and safe use distance of 15 common household appliances Experimental equipment: LZT-1000 electromagnetic radiation tester, tape measure and various home appliances Experimental site: A1-1, an enthusiastic citizen of Longji Garden, Yubei District Experimental principle: The tester can detect the electric field and magnetic field radiation intensity of the home appliance. The electric field detection range is 1-1999 volts/meter, and the magnetic field detection range is 0.01-19.99 microtesla. If the radiation intensity exceeds the detection range (ie, when overloaded), the tester will display “1â€. "In addition to long-wave radiation household appliances such as microwave ovens, the electromagnetic radiation tester can detect the radiation index of most household appliances." Liu Qingsong, director of the laboratory of the Municipal Electromagnetic Compatibility Technology Research Center, said that some home appliances in the test may show a radiation value of 0, but This does not mean that there is no radiation, but that the radiation is less than the minimum range. Experimental process and results Radiation source that may be overlooked Open the door and have radiation It is best to close before going to bed Refrigerator (double door, power 140 watts) Open the door and have radiation Few people have mentioned the radiation of refrigerators. However, when the reporter measured the refrigerator of Ms. Zhu’s house, the tester alarm also rang. When the refrigerator door is opened, the tester value is 164 volts/meter, and the alarm stops until the distance is pulled to 0.25 meters. Electric blanket (power 110 watts) It is best to close before going to bed Regardless of whether Ms. Zhu drives the electric blanket to the high-end or low-end, the tester is alarmed when it is close to the electric blanket, and the display value is about 1400 volts/meter. Leave the blanket surface 0.05 meters, the value is 0. But the electric blankets are all close to each other, so this safe distance is of little significance. It is recommended that when using electric blankets, it is best to heat up before going to bed and turn off when going to sleep. air conditioning (1.5 split wall mount, power 1300 watts) Radiation at the power source Tested is a wall-mounted split air conditioner. When the air conditioner is working, the tester does not react at the air outlet, but when the tester moves back and forth on the fuselage, there are intermittent numerical reactions and alarm prompts. After repeated testing, a small amount of radiation is detected only when the tester is near the power supply, up to a maximum of 160 volts/meter. When you don't need air conditioning, pull out the power supply. Wireless Router Large amount of radiation above Many people don't know that wireless routers are also a large source of radiation. When the tester is close to the wireless router, the amount of radiation in different parts varies greatly, with the strongest directly above, between 1200-1400 volts/meter, and the radiation around the front and rear is only tens of volts/meter. When the tester is about 0.05 meters away from the wireless router, the value is 0. Since no one will face it online, don't worry too much. However, it is best to put it higher. Experimental analysis >> "As long as it is a live electric appliance, it has more or less electromagnetic radiation, which is determined by its working principle." Liu Qingsong, director of the laboratory of the Municipal Electromagnetic Compatibility Technology Research Center, said that the radiation values ​​of different parts of the same kind of electrical equipment are different because of electromagnetic waves. There is a main emission direction, and electromagnetic radiation in other directions is weaker. Does electromagnetic radiation have any harm to the human body? Liu Qingsong said that there is no final conclusion in the academic world. "Electromagnetic radiation is different from nuclear radiation and radiation, and the latter two are definitely harmful to the human body." Studies have shown that home appliance electromagnetic radiation is completely harmless to the human body, and some studies believe that long-term exposure to high electromagnetic radiation environment will damage human immunity. And the nervous system, leading to endocrine disorders, decreased concentration and so on. The experiment in the manuscript is only for the sample itself, and the experimental conclusion is not a professional technical index and is for reference only. Radiation source you know 0.65 meters away The alarm is stopped Overloaded close to the screen TV set (28-inch vintage color TV, power 120 watts) 0.65 meters away The alarm is stopped The reporter immediately approached the TV screen of the tester, and the tester alarm immediately rang, and it was similar to other parts. The highest tester showed “1â€. When the distance between the tester and the TV set is 0.65 meters, the alarm stops and the value fluctuates between 0-2 volts/meter. laptop (14 inches, power 100 watts) Overloaded close to the screen When the reporter put the tester close to the computer screen, the alarm sounded non-stop, and the tester showed that the value was always overloaded. However, as the tester moves away from the screen, the value gradually decreases until it reaches zero at 0.3 meters. Mobile phone The highest radiation rate when dialing Whether it is standby, dialing or answering, the mobile phone's electric field radiation intensity is displayed as zero. When the reporter switched the tester to magnetic field detection, it was found that during the dialing process, the amount of radiation exceeded the maximum detection range; when answering, the value fluctuated between 10 microtesla and overload, and 0 in standby. Hair dryer (power 1200 watts) The higher the number of files, the greater the radiation When the hair dryer is working, the radiation value of the tuyere is zero; the radiation of the fuselage is extremely high, and when it is turned to the highest level, the value fluctuates between 1400 volts/meter and the overload. The lower the number of gears, the smaller the value. When the tester is 0.1 m from the fuselage, the alarm stops. Can relax Electric appliance Looks safe Have radiation but don't worry tablet Looks safe The tester displays 0 for Ms. Zhu’s iPad2, whether it is turned on, off, or connected to wireless wifi. It only displays a value of 2 volts/meter when the tester is moved to the bottom. Energy saving lamp (power 15 watts) Have radiation but don't worry When the tester is close to the energy-saving lamp, the detection value is only about 270 volts/meter, and when it is 0.1 meter away, the value is not detected. It can be seen that the electromagnetic radiation threat of energy-saving lamps is basically zero. In addition, household appliances such as range hoods, rice cookers, electric fans, water dispensers, and printers have not been detected with radiation values. How to reduce electrical radiation Liu Qingsong said that some technical means can reduce electrical radiation, but it is not practical for ordinary families. He suggested that you reduce the effects of electrical radiation by the following methods. 1. Select an appliance with 3C quality certification. 2. Use the appliance strictly in accordance with the instructions. 3. Minimize exposure to radiation sources. 4. Minimize the use time and maintain a certain safe distance when using. Is cactus really radiation-proof? Net-cyanus, golden gems and other plants can absorb radiation. Is this really the case? The reporter first placed the tester at a distance of 0.1 m from the computer monitor. The tester fluctuated at 20 volts/meter, and placed a pot of cactus between the tester and the display. At this time, the tester's reading dropped rapidly and eventually Fluctuations between 0-4 volts/meter. It seems that the cactus has played a role. "At present, no research has shown that plants can absorb electromagnetic radiation." Liu Qingsong said, but there are some objects that can block electromagnetic radiation, which may include "radiation-proof plants" such as cactus. However, plants such as cacti cannot completely block computer monitors, so its blocking effect on electromagnetic radiation is limited. Easy Electronic Technology Co.,Ltd , https://www.nbpcelectronicgroup.com