Office equipment: cell phones, computers, copiers, electronic instruments, medical equipment, etc.
Home decoration: marble, laminate flooring, wallpaper, paint, etc.
Surrounding environment: high-voltage power lines, power substations, television (radio) signal transmission towers, etc.
Natural environment: Sunspots, etc. Let's compare the level of radiation from TV and computers 1.TV
The traditional tube TV CRT was the first to be tested. We first tested it in close proximity, within half a meter of the front, the moment of normal power on, it produces a radiation value of 0.12 μT, the radiation value of 0.30 μT during normal viewing, 0.27 μT when changing the channel, and 0.11 μT in standby, and the side of the radiation value in the case of normal viewing is 0.28 μT, which overall seems to be close to the warning value.
Because most people watch TV at a distance of about 3 meters, we also did a test at 3 meters on the front side, and found that there is a large degree of attenuation of radiation: switching on and off, normal viewing, changing channels, and standby status are all 0.12μT, the test results show that the traditional tube TV will not be harmful to normal viewing. But to our surprise, it is in the back of the greater intensity of radiation, power on within half a meter of the radiation value of 4.8 μT, and across the glass, wood, radiation has not been reduced, and even across the 10-centimeter-thick wall radiation value of 0.9 μT. If your TV behind the head of the bedroom bed can be careful. But people usually rest and watch TV at different times, so it's not a big problem.
Then look at the plasma TV, front half a meter, power on, watch, change the channel are 0.11μT, standby 0.12μT, side 0.11μT; in the front 3 meters, power on 0.12μT, normal viewing is 0.14μT, change the channel, standby 0.11μT, from the results of the test compared to the traditional TV, the intensity of radiation of the plasma to be a little smaller.
And rear-projection TV, normal viewing, close to the front of the body 0.12μT, side 0.19μT, behind 0.14μT; front half a meter at 0.11μT; front 3 meters at 0.1μT.
In the TV series is the most reassuring is the LCD TV, whether it is the front of the front half a meter or the front of the 3-meter range, the moment of the power on, normal viewing, change the station, The test results for the standby state were all 0.1μT, while the side was also only 0.11μT, essentially no change in radiation intensity.
Test results: after the comparison of three kinds of TV, we can easily find that LCD TV, rear projection TV radiation is the smallest, plasma TV radiation is slightly stronger, CRT TV is larger, but mainly in the back of the TV, suggesting that it is best to maintain a certain distance when watching, especially children. People have always thought that the CRT monitor radiation is greater, in the end is not what we think it is? We first tested it, the front of the display is close to 1.00μT, the side of the display is close to 0.55μT, which is not small ah! In the look at the center of the display, the distance of 0.03 meters, the radiation is still 0.55μT, is this CRT display is really as big as we think the radiation? In order to further confirm, we began to look for its safe distance, the results found that the distance of 0.2 meters, in front of the display of radiation attenuation to 0.18μT, it seems that the CRT display as long as you keep a distance of 0.2 meters can be assured that the use of it. Some viewers asked if it is the same as CRT TV behind the larger radiation, the test found that it is not large. Some people like to use anti-radiation screen saver, does it work? We also made a special test of it, plus the screen protector radiation only 10% reduction, it seems that the role of the screen protector is not big.
CRT monitor radiation index: ★★★★★☆☆
Today's LCD monitors are replacing traditional monitors, and we also tested it. 0.11μT at 0.5 meters in front of the display, 0.12μT at the moment of power on, 0.11μT at power off, 0.12μT at 0.5 meters to the side of the display, it seems that LCD monitors are quite reassuring.
LCD radiation index: ★ ☆☆☆☆
Let's take another look at the host of the desktop computer, the front 0.17μT, but the host of the central operating panel radiation is slightly stronger, the distance of 0.03 meters, 0.26μT; the host side of the 0.29μT, the left side of the chassis face the center of the distance of 0.03 meters, 0.23μT. 0.46μT behind, but we generally There is a certain distance from the back of the mainframe, so the impact is not significant. There is a moment of power on, standby state are 0.17μT. Another thing to say is that the desktop computer power wiring if then connected to the state of radiation is 0.47μT, so then use desktop computers should also keep the distance.
The radiation index of the mainframe of the desktop computer: ★★★★☆☆