Anyone who is rated as five points is seriously exceeding the standard and should attract your attention; Samsung and above also belong to the over-standard range, which should also attract your attention; One star is safe and can be used with confidence. There are two levels of electromagnetic radiation, among which the unit of power frequency band is μT, and the radiation above 0.4μT belongs to strong radiation, which is harmful to human body and prone to leukemia after long-term contact. If the radiation is below 0.4μT, it is relatively safe. The unit of radio frequency electromagnetic wave is μW/㎝2. The TV CRT was the first to be tested. First, we test it at close range. Within the first half of a meter, the radiation value generated during normal startup is 0. 12μT, 0.30μT during normal viewing, 0.27μT during channel changing, 0.1/μ t during standby, and the radiation value on the side is 0.0 during normal viewing. Because most people watch TV at a distance of about 3 meters, we also made a test on the front 3 meters, and found that the radiation has a great degree of attenuation: the startup, normal viewing, channel changing and standby state are all 0. 12μT, and the test results show that the normal viewing of traditional CRT TV will not cause harm. But to our surprise, the radiation intensity behind it is relatively high, and the radiation value reaches 4.8μT within half a meter after starting the machine, and the radiation through glass and wooden boards has not decreased, even through the wall with a thickness of 10 cm, the radiation value is 0.9 μ t. Please be careful if the back of your TV is facing the bedside of your bedroom. But usually people have different time to rest and watch TV, so it is not a big problem. Look at the plasma TV again, the front is half a meter, the starting, watching and channel changing are 0. 1 1μT, the standby is 0. 12μT, and the side is 0.11μ t; The front is 3 meters, and the TV is 0. 12μT when turned on, 0. 14μT when viewed normally, and 0. 1 1μT when turned on or on standby. According to the test results, the radiation intensity of plasma is less than that of traditional TV. When the rear projection TV is viewed normally, it is 0. 12μT, 0. 19μT and 0. 14μ t near the front, side and back of the fuselage, respectively. First half meter 0.11μ t; 3 meters ahead is 0.1μ t. The most reassuring thing in TV series is LCD TV. No matter whether the front is half a meter or three meters, the instantaneous test results at startup, normal viewing, channel changing and standby state are all 0. 1μT, while the side is only 0. 1 1μT, and basically the radiation intensity has not changed. Test results: Comparing the three kinds of TVs, we can easily find that LCD TV and rear projection TV have the smallest radiation, plasma TV has a little stronger radiation, and CRT TV is bigger, but it is mainly behind TV. It is recommended that you keep a certain distance when watching, especially for children. DVD player and home theater popular in recent years, that is, DVD player plus audio system, closely follow the test results, DVD 1.2μT, OK player 1.2μT, power amplifier 1.24μT, small speaker 1.5μT, and large speaker 0.49 μ t. Tip: I suggest you use home theater as little as possible. If you want to sing, you'd better go to KTV. CRT monitors, liquid crystal displays, desktop computers, large computers, small speakers, and notebook computers are always considered to have large radiation. Is that what everyone thinks? We tested it first. The front of the display is close to 1.00μT, and the side of the display is close to 0.55μT, which is not small! Look at the center of the display screen, the distance is 0.03 meters, and the radiation is still 0.55 μ t. Is this CRT monitor really as big as we thought? To further confirm, we began to look for its safe distance. In this way, when the distance is 0.2 meters, the radiation in front of the display screen will be attenuated to 0.18 μ t, and it seems that the CRT display can be used safely as long as the distance is 0.2 meters. Some viewers asked if it was as big as CRT TV, and it was not big after the test. Some people like to use radiation screensavers, so is it effective? We also specially tested it, and the screensaver radiation only decreased by 10%. Screen saver doesn't seem to have much effect. Radiation index of CRT monitor: ★★ It seems that LCD is really reassuring. Radiation index of LCD: ★ The back is 0.46μT, but we are usually at a certain distance from the back of the host, so the impact is not great. Also, the startup moment and standby state are both 0.17 μ t, and one more thing to say is that if the power connection of the desktop computer is reconnected, the radiation is 0.47μT, so keep a distance when using the desktop computer again. The radiation index of the desktop computer host: ★★★☆☆☆ However, the next test is not very optimistic. Subwoofer speaker, center of operation panel, 0.03m away, 0.63μ t; The center of the right side of the speaker is 0.03m and 5.68 μ t away; Radiation is not small, so what is its safe distance? After careful testing, it is found that when the distance is 0.4 meters, its radiation is reduced to 0. 17μT ... So the subwoofer speaker has serious radiation, and it should be kept at least half a meter away when using it. Radiation index of subwoofer speaker: ★★★★☆ Finally, notebook computer, 0. 1m 0. 13μT in front of display screen, 0.3m 0. 10μT in front of display screen, 0.3m 0. 13μT on display screen side and 0./kloc above keyboard. The test results show that the radiation of notebook keyboard is slightly stronger and the power adapter is the largest. Notebook radiation index: ★☆☆☆☆☆ Tip: LCD screen radiation is very small, CRT monitor is slightly larger, but they are all within the safe range; The radiation on the back and side of the host is large, so it is strongly recommended that you do not open the chassis for the convenience of heat dissipation. The subwoofer has serious radiation, so keep a distance of at least half a meter when using it. The radiation of the notebook is concentrated above the keyboard, so keep a distance from the power adapter when using the notebook. Oh, yes, it is said that this computer and notebook don't radiate much, but the photoelectric mouse turns red and blue, which is very scary. Is there radiation? Are the radiation of wireless mouse and keyboard less than that of ordinary ones? And that WLAN transmitter! There are digital devices, digital cameras, MP3 and MP4. To tell you the truth, this battery-powered DC appliance is the safest. Ordinary Mouse Ordinary Keyboard Wireless Mouse Wireless Keyboard Wireless Gateway Printer Digital Camera and MP4 Power Adapter Ordinary Mouse 0. 1μT Ordinary Keyboard 0.1μ t Wireless Mouse 0.53μT Wireless Keyboard 0.96μT Wireless Gateway 0. 15μT Printer 0.6543. 8+0 1μT digital camera power adapter 0.1μ t MP4 power adapter 0. 16μT power adapter radiation index: ★☆☆☆☆; Radiation index of wireless mouse and keyboard: ★★★☆☆ Tip: Ordinary keyboard, mouse, wireless gateway, printer, digital camera and MP4 power supply have little radiation, so you can use them safely. However, wireless keyboards and wireless mice radiate a lot. Household appliances such as refrigeration and heating and electric blanket air conditioning are the ones with the longest use time and the largest power in the bedroom. Fortunately, their radiation is only 0. 1μT at the moment of switching on and off and during normal use, and the radiation value does not change much in various modes such as mute and sleep. In winter, some families like to use small electric heaters, heaters and other heating appliances, but the radiation is not small. Let's look at the infrared electric heater first. Test results of distance 1. 8μT means that the radiation above is 1.8 μ t, and the side is 5.4μT, so the radiation intensity is very high. We tested at a distance of 1mm, and the radiation decreased to 0.65438. The test result of heater close contact is 9. 3μT, that is, 0.34μT on the front and 0.25μT on the back at half a meter. However, the most reassuring thing is the Youting electric heater, which is 0.19 μ t in the center when it is used in high grade; The center of the side is 0. 18μT when it is near, and 0. 18μT when it is half a meter. When high-grade electric blanket is used, it is 0.7 1μT near the power supply, 1. 1.5μT at the left corner of the opposite side of the power supply, 0.7 1μT at the right corner of the opposite side of the power supply, and 0.55 μ t at the center of the electric blanket. At low gear, the left corner of the reverse side of the power supply is 0.70μT, and the right corner of the reverse side of the power supply is 0.49μT t. It seems that the radiation of the electric blanket is really not small. Another big radiation source in the bedroom is the electric fan, with low-grade wind of 2.6μT and high-grade wind of 0.9 μ t. However, when it exceeds 2m, the radiation decays to 0. 1 1 μ t, suggesting that the air conditioner has small radiation and can be used safely. However, infrared tube electric heaters, heaters and electric fans radiate a lot, so it is recommended to keep a distance of at least one meter when using them. Electric blankets also radiate a lot, so it is recommended to use them less. Humidifier, air purifier In the test, we found that this kind of fan humidifier has the largest radiation. The test result close to it is 49μT, the low-grade use is 15μT, and the high-grade use is 32μT, but when it exceeds 1m, it drops to 0.52 μ t. The test result of the ultrasonic spray humidifier is 9μT and 0.22μT outside 1 meter. The test result of the air purifier near it is 0.35μT, which drops to 0. 12μT within the range of 0.5m It is suggested that humidifiers and air purifiers should not be too close to human body. Humidifier radiation index: ★★★★★ Air purifier radiation index: ★★★☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆973 0.3m2.01μ w/2 in front of the door1m0.41μ w/2 in the center of the microwave oven door: 0.05m30.14μ w/2 away from the door. The test results show that the radiation of the microwave oven is the largest when it is started (value 65438 suggests that the electromagnetic oven has a large radiation, but it is recommended. The microwave oven radiates the most when it is started. It is recommended not to get too close when cooking in the microwave oven. Radiation index: ★★★★★★★★★★ Refrigerator range hood ozone disinfection cabinet ozone machine electric cooker electric baking pan electric kettle juicer soymilk machine refrigerator door 0. 13μT (open the door) Before the range hood 0. 16μT Boot state 0. 1 m 0.38μT, The front 0. 1m 0. 1μT ozone disinfection cabinet +00.00μT soymilk machine is close to 0.86μT 0. 1 m 0.30μT tip: refrigerators, ozone disinfection cabinet and rice cookers can be used safely with little radiation; The radiation of electric baking pans and range hoods is slightly larger, which belongs to the early warning range. Be careful not to stick them too close when using. Ozone machine, soymilk machine and juicer all have relatively high radiation, so it is best not to let children use them. Vacuum cleaner, electric iron, hair dryer, power terminal board We have tested this big vacuum cleaner before, and the radiation under normal use is 15μT, but it is not small; This small hand-held vacuum cleaner is still very popular now. How much radiation does it have? We also did the test, and the distance at the handle was 0.03m and 6.64 μ t; Left center, 4.22 μ t; However, if you use it in this way, its radiation will decay to a safe range. After 0.2m, the radiation index of 0. 15μT ... large vacuum cleaner: ★★★★★★★ small vacuum cleaner: ★★★★☆ The radiation of electric iron is also quite large. We did another detailed test and found that the heating radiation of the electric iron would increase. In the heated state, at the handle, it is1.22μ t; However, under the condition of constant temperature, the radiation decays to 0. 12 μ t, so if ironing clothes, it is best to heat them once and then continue heating them later. Never iron clothes while heating. Radiation index of electric iron: ★★★☆ Hair dryer is also a major radiation source we found. In the previous test, the low match was 4.20μT and the high match was10.00μ t; After that, the different parts of the hair dryer were tested in detail under the condition of hot air, and the handle was 0.03 m,10.95 μ t; Air outlet, 7. 16μT, it seems that the hair dryer is really going to be used less. Radiation index of hair dryer: ★★★★★★★ ★ Another thing to remind everyone is that the power terminal board is only 0. 1 1μT if it is not connected with electrical equipment. However, when connecting high-power electrical equipment, when the distance is 0.03m, its radiation can be 1.25μT ... which will attract your attention. Radiation index of power terminal board (in use): ★★★★☆ Text: The radiation of vacuum cleaner and hair dryer is large, and the radiation of electric iron is not small. Keep away from children when using, and the radiation of power terminal board should also attract your attention, and don't put it on the bedside. Electric footbath, treadmill, fat exercise machine This is a very popular electric footbath now. Let's see how much radiation it has. 0.03m away from the power line, 2.20μT t t. Radiation index of electric footbath: ★★★★☆☆☆ Some people like to exercise at home. How much radiation does this treadmill have? When the treadmill works, the panel is 0. 15μT, the front of the conveyor belt is 3.90μT, and the tail of the conveyor belt is 0. 1 1μ t ... The radiation index of the treadmill is ★☆☆☆☆☆☆☆☆☆☆☆☆☆973 Let's see how much radiation the fat exercise machine has. Fat body-building machine, side, high gear, 0.03 m, 5.48 μ t. Radiation index of fat body-building machine: ★★★★★★ ★ Note: the electric footbath and fat body-building machine have large radiation, and the front of the conveyor belt of the treadmill has large radiation. What kind of spectrograph is not too radioactive? In fact, as long as it is infrared, it is not within the scope of our test, and it is not electromagnetic radiation. So, you can use it with confidence. Let's start with the desk lamp. This is the desk lamp in the master bedroom, and its radiation value is 0.17μ t. This is an energy-saving eye-protection desk lamp for children, and its radiation value is also 0.11μ t. The old desk lamp is used in the study, and its radiation value is 0.1μ t. The test result of fluorescent lamp is: master bedroom. It can be avoided without spending a penny. One of the most effective ways is to keep a distance, and it must be a safe distance of more than 3 meters. If you are at home, make reasonable arrangements, because experts suggest that it is best not to wear protective clothing. The human body itself is a big conductor, and wearing it can only introduce shielded radiation into the human body. Moreover, there is no clear material standard for protective clothing, and the price is uneven. Therefore, it is recommended that you do not trust the role of protective clothing.