Radiation and electromagnetic interference
Traditional monitors as a result of the use of electron beams emitted by the electron gun in the hit the screen will produce a source of radiation, although the existing products have been a great improvement in technology, radiation damage is constantly reduced, but still can not be cured.
In this regard, the TFT LCD (is now the most commonly used type of LCD) has an inherent advantage, the amount of radiation is almost negligible (LCD was originally no radiation, LCD monitor radiation from the LCD monitor inside the high-voltage package and individual lines). As for the interference of electromagnetic waves, TFT LCD only a small amount of electromagnetic waves from the drive circuit, as long as the shell can be strictly sealed to exclude electromagnetic wave leakage.
Traditional monitors in order to better heat dissipation, the shell will be drilled on the heat dissipation holes, although the heat dissipation effect, but inevitably by the electromagnetic wave interference.
LCD monitors compared to CRT monitors can be said to be spring, orchid, autumn and chrysanthemum, each winning. The traditional CRT monitor technology development to today has been very mature, although not as natural as LCD monitors, but in some areas still have their own absolute advantage.
Specifically, the quality and price of flat panel displays have been accepted by the public, even if it is quite controversial radiation issues, but also be controlled in the safety standards below, there are data that a person every day by the cosmic rays of the radiation, far greater than the radiation of the CRT monitor.
An indisputable fact is that if the LCD monitor really has an absolute advantage, then in the highly competitive home TV market, I'm afraid that early has been the world of LCD monitors.
From the present point of view, the traditional CRT monitors in color and fast image display and other aspects of the advantages of LCD monitors can not be compared, so the requirements of these aspects of the more stringent professional users, CRT monitors are still their first choice. LCD monitors will not completely replace the position of CRT monitors, only with CRT monitors "share" the market, can not lead the way.
As long as the electronic products are inevitably blessed shot. Just the size of the problem ~
Not only electronics, most of everything around us is there, of course, there is no need to see the radiation is very serious, each of us, every moment in the radiation. Certain substances inside the earth constantly emit rays, so the human body has a certain ability to withstand radiation. Don't be too concerned about these, or live a very tired.
The basic component of the computer monitor is a cathode ray tube, when the cathode ray tube emits a stream of electrons hit in the fluorescent screen, can produce harmful rays, but the computer monitor shell can absorb a large amount of radiation, the human body is actually exposed to radiation exposure measurement of 6 milliliters, which is far from the body's maximum permissible dose of exposure to 5 lattes. Therefore, the rays emitted by the computer will not have an adverse effect on the human body.
Radiation around computers includes
X-rays,
ultraviolet light,
visible light,
infrared light,
ultra-high frequency,
high frequency,
extremely low frequency,
static fields.
But the intensity of their emissions are all very weak. It is far below the standards required by our country and the International Health Organization.
Related sources at the Irradiation Center of the China Academy of Atomic Energy Science believe that computer radiation is a weak radiation that basically has no effect.
The keyboard and mouse also have radiation, and greater than the monitor!!!!
It is true that there is a reference value for the amount of radiation emitted by each of the relevant components of a computer:
1000V/m for the keyboard,
450V/m for the mouse,
218V/m for the screen,
170V/m for the mainframe computer.
It is said that placing a cactus in front of the computer desk can help to reduce the radiation.
Computer placement is very important:
Try not to let the back of the screen toward the people, because the strongest radiation is the back of the computer, followed by the left and right sides, the front of the screen, but the weakest radiation. To be able to read the words prevail, at least 50 centimeters to 75 centimeters away, which can reduce the damage of electromagnetic radiation.
Pay attention to indoor ventilation:
Scientific research has confirmed that the computer screen can produce a carcinogen called brominated dibenzofuran. Therefore, it is best to install a ventilation fan in the room where the computer is placed, and if not, pay particular attention to ventilation when surfing the Internet.