The radiation waves emitted by the computer are often ignored by people. According to the international MPR II radiation safety regulations: in the 50cm distance must be less than or equal to 25V/m radiation exposure.
But you know how much computer radiation? Computer radiation: 1, keyboard 1000V/m2, mouse 450V/m3, screen 218V/m4, host 170V/m5, Notebook 2500V/m
In addition, the radiation electromagnetic waves on the human body has eight major harm:
1, cellular cancer promotion
2, hormonal irregularities
3
3, calcium ion intense loss
4, dementia triggered
5, abnormal pregnancy abnormal birth
6, high blood pressure heart disease
7, electromagnetic wave allergies
8, an increase in suicidal
Using computers you have to pay attention to the four major hazards of computer radiation are as follows: !)
1, computer radiation pollution will affect the human body's circulatory system, immune, reproductive and metabolic functions, serious also induce cancer, and will accelerate the proliferation of cancer cells in the human body. `
2, affecting people's reproductive system is mainly manifested in men with reduced sperm quality, pregnant women with spontaneous abortion and fetal malformation, etc. 2.}N
3, affecting people's cardiovascular system manifested in palpitations, insomnia, some women's menstrual disorders, bradycardia, decreased cardiac output, sinus irregularities, leukocyte reduction, decreased immune function, etc. 5S
4, on people's visual system has an adverse effect due to the eyes belong to the human body on the sensitive organ of electromagnetic radiation, excessive electromagnetic radiation pollution will also have an impact on the visual system. The main manifestation of vision loss, causing cataracts, etc. Zc=
The State Administration of Quality Supervision yesterday announced the latest computer product quality national supervision and sampling results show that the electromagnetic radiation in the computer can not be ignored.
The AQSIQ sampled computer products in Beijing, Shanghai, Tianjin, Chongqing, Zhejiang, Hubei and other 14 provinces and cities, the sampling pass rate of 72%. It is understood that the sampling results show that the current domestic market in the computer products in the computing speed, multimedia features and hardware and software supportability than before have improved, but some companies are not stable enough product quality level. In this sampling, four pass, HP, Muze and other well-known enterprises of computer products were also identified as unqualified products.
It is understood that the computer product quality national inspection and sampling process found in the main quality problems is electromagnetic compatibility in the radiation nuisance, conducted nuisance indicators exceed the standard. Radiation harassment is a computer work to space emitted by an electromagnetic wave interference, this interference will affect other electrical appliances, especially high-sensitivity electrical appliances work properly; Conducted harassment will affect the normal operation of other electrical appliances in the same grid, such as the composition of the entire system of motherboards, display cards, switching power supplies, monitors, keyboards, mice, etc., if you buy a bad radiation harassment caused by the exceeding standards. Sampling found that some enterprises due to insufficient understanding of the standard, parts and components import control and production line assembly quality control is not strict, the lack of the necessary means of detection, resulting in unqualified product quality.
Computer on human health hazards, from the type of radiation, mainly including computers at work and issued by electromagnetic radiation (various electromagnetic rays and electromagnetic waves, etc.), sound (noise), light (ultraviolet, infrared radiation, as well as visible light, etc.), and other radiation "pollution".
From the point of view of the source of radiation, they include CRT monitor radiation sources, chassis radiation sources, as well as speakers, printers, copiers and other peripheral equipment radiation sources. One of the CRT (cathode ray tube) monitor imaging principle, determines that it is difficult to completely eliminate harmful radiation in the use of the process. Because it is working, its internal high-frequency electron gun, deflection coil, high-voltage packages and peripheral circuits, will produce such as ionizing radiation (low-energy X-rays), non-ionizing radiation (low-frequency, high-frequency radiation), electrostatic fields, optical radiation (including ultraviolet, infrared radiation and visible light, etc.) and other rays and electromagnetic waves. While the liquid crystal display is the use of physical properties of liquid crystal, its working principle is completely different from the CRT display, inherently radiation-free (negligible), environmentally friendly "health" type of display; chassis internal components, including high-frequency, power consumption of the CPU, with a large number of internal integration of transistors of the main chip of the card The various components inside the chassis, including high-frequency, power-consuming CPU, various boards with a large number of internal transistors integrated into the main chip, with high-speed DC servo motors of the CD-ROM drive, floppy drive and hard disk, a number of cooling fans and transformers inside the power supply, etc., when the work of the low-frequency electromagnetic radiation and noise interference. In addition, external speakers, copiers and other peripheral equipment radiation source is also a not to be ignored "source".
From the point of view of the degree of harm, there is no doubt that electromagnetic radiation is the most harmful. Medical experts at home and abroad research shows that long-term, excessive electromagnetic radiation will cause direct harm to the human reproductive system, nervous system and immune system, is the main cause of cardiovascular disease, diabetes, cancer mutation and cause pregnant women miscarriage, infertility, teratology and other lesions of the triggering factors, and can directly affect the minors of the body's tissues and bone development, caused by visual acuity, memory loss and decreased hematopoietic function of the liver! In addition, electromagnetic radiation can directly affect the development of minors' body tissues and bones, cause vision, memory loss and decrease in liver hematopoietic function, and lead to retinal detachment in serious cases. In addition, electromagnetic radiation is also a hidden danger to information security, the use of specialized signal receiving equipment can be received and deciphered, resulting in information leakage and unnecessary losses. Excessive electromagnetic radiation will also interfere with other electronic equipment around, affecting its normal operation and electromagnetic compatibility (EMC) problems.
Therefore, electromagnetic radiation has been listed by the World Health Organization as the fourth largest source of environmental pollution after water, air, noise, and has become an invisible "killer" that endangers human health, and the protection of electromagnetic radiation has become a top priority.
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]: Protection
Health Countermeasures A Plan of the spear and shield
As the saying goes: the devil is one foot high, the road is high. In view of the harmful effects of electromagnetic radiation from computers, the relevant international and domestic professional organizations and computer manufacturers have begun their work on protection against computer radiation at a very early stage. After years of efforts, the computer and other electronic products manufacturing, radiation, energy saving, environmental protection, ergonomics and other aspects of the development of MPR, TCO, FCC, UL and other stringent certification standards to ensure that human health is not jeopardized. At the same time, the so-called energy-saving, environmentally friendly, radiation-free "green computer" also came into being in recent years.
The harm of electromagnetic radiation for the computer, can be taken to active protection and passive protection of two methods. Passive protection method, that is, in addition to improving the working environment and pay attention to the use of methods, take to frequent contact and operation of computers equipped with radiation clothing, radiation screen, radiation curtains, radiation glass and other measures to reduce or eliminate the harm of electromagnetic radiation; active protection method, it is from the computer electromagnetic radiation "source" -- monitor and chassis components. -- monitor and chassis and other components to start, it will eliminate or shielding.
One is to buy, that is, to buy the strength of manufacturers on the market to meet the "green computer" standard products; the second is DIY, that is, to buy through a variety of certification standards, "green" computer accessories, to create their own healthy computer. Here we will focus on how to choose to meet the radiation protection standard accessories to DIY healthy computer.
The imaging principle of CRT monitors determines that it is difficult to completely eliminate the harmful radiation emitted during use. In order to minimize the intensity of its harmful radiation and protect users' health, international authoritative organizations have successively launched a series of anti-electromagnetic radiation certification standards for electronic devices such as monitors, ranging from the initial MPR Ⅰ (1987), MPR Ⅱ (1990), TCO '92 (1992) to the latest TCO '99, TCO'03 (Figure 1), strict standards have been set for radiation, energy saving, environmental protection, ergonomics and other aspects of the monitor, and only products that have followed and passed the testing of the latest relevant standards in the design, manufacturing and finished products can be called "green
Currently, there are nearly 20 certification standards related to monitors. Some of the more famous ones are: the Swedish National Measurement and Testing Authority's MPR II, the Swedish Professional Employees Union's (TCO) TCO series, the U.S. Environmental Protection Agency's (EPA's) EnergyStar, the U.S. Federal Communications Commission's (FCC's) FCC, and China's newest 3C and other certification standards. Below we focus on understanding and mastering a few common certification marks on monitors.
MPR Ⅱ certification Sweden Measurement and Testing Agency in 1987 on the electric and magnetic field radiation on human health effects and put forward one of the earliest standards - MPR Ⅰ. Based on this, it was expanded to MPRⅡ in 1990, which more strictly limits the intensity of magnetic fields generated by monitors in use, etc. It provides 21 monitor standards, including flickering, skipping, linearity, brightness, reflectivity and font size, etc., and puts forward the greatest limitations on the ultra-low-frequency (ELF) and very-low-frequency (VLF) radiations of the monitors.The MPRⅡ standard has become a globally recognized and more stringent electromagnetic radiation. The MPR II standard has become a globally recognized and more stringent electromagnetic radiation detection standard. Most monitors on the market today are MPR II compliant, with the exception of a few inexpensive models.
TCO Series CertificationThe Swedish Confederation of Professional Employees (TCO) began in 1992, on the basis of MPR II, to monitors and other electronic equipment in the ecology (Ecology), energy (Energy), radiation (Emissions) and ergonomics (Ergonomics) and other aspects of the higher requirements and more stringent standards, and gradually evolved into the world's common, more stringent standards. TCO'92/TCO'95/TCO'99/TCO'03 standards have evolved into a series of TCO standards that are now common in the world, including TCO'92/TCO'95/TCO'99/TCO'03 and so on. TCO'92 is a series of standards for monitors, including electromagnetic radiation, automatic power shutdown, provision of power consumption data, compliance with fire prevention and electrical safety, etc. TCO'95 adds requirements for environmental protection and ergonomics on the basis of TCO'92, emphasizing low electromagnetic radiation and low magnetic field radiation standards. TCO'95 adds requirements for environmental protection and ergonomics on the basis of TCO'92, emphasizing low electromagnetic radiation and low magnetic field radiation standards, and its coverage involves monitors, keyboards and system units, etc. TCO'99 further proposes stricter and more comprehensive standards for environmental protection and user comfort, and also puts forward specific regulations for the design of keyboards and portable machines. TCO'03, as the fourth generation of TCO certification standards, has strengthened TCO'03 compared to TCO'99 in terms of ecology, energy, radiation, and ergonomics of monitors, except for radiation, and has become the world's most comprehensive and stringent certification standard for the new generation of This makes TCO'03 the world's most comprehensive and rigorous certification standard for next-generation, high-quality displays.
FCC certificationThe U.S. Federal Communications Commission (FCC) is an organization that examines electromagnetic signals and electronic devices. It issues FCC certificates which mainly set up electromagnetic specifications to limit the amount of radiated noise emitted by digital devices and switching power supplies, etc. FCC certificates are divided into two levels, A and B, with more stringent technical requirements for Level B. Level A certificates are issued by the FCC on a case-by-case basis. Class A products produce strong electromagnetic waves that can interfere with radios, televisions and other electrical appliances, so they are not suitable for home use, but can be used in offices and other places; while Class B products are said to produce relatively weak electromagnetic waves that do not interfere with microwave signals, so they can be used at home or in the office, such as personal computers or telephones belong to this type of product.
CCCC certification CCC is "China Compulsory Certification (ChinaCompulsoryCerlification)" abbreviation, is China's newly implemented mandatory product certification mark. At the same time 3C certification is also the original CCEE (electrician), CCIB (import and export quarantine), EMC (electromagnetic compatibility) certification of the three in one, respectively, from the safety of electricity, electromagnetic compatibility and wave interference, stability and other comprehensive provisions of the standard. Where included in the national implementation of mandatory product certification directory of products, must be certified by the state-specified certification body to obtain the relevant certificates and certification mark before the factory sales, imports and use in business activities. 3C mark has two versions: CCC (S) and CCC (S&&E). CCC (S) represents only through the safety standards certification, CCC (S&&E). (S&&E) means that the product is certified for both safety and electromagnetic compatibility (e.g., Figure 2).
Understanding and mastering the above certification standards, you will be in the purchase of "green" monitor to do "mind". In fact, when you buy, you only need to "follow the prescription", specializing in picking those through the TCO '99, TCO '03, 3C and other certified products can be. Because these products through the most stringent standards such as TCO'99 testing, they are in the design, materials, manufacturing, factory, sales and other every process, each link, to try to comply with the relevant certifications contained in the standard requirements. So there is basically no need for users to understand the specific technical details of the product, as long as it passes the TCO'99 and other certifications, which means that the product's electromagnetic radiation and other hazards are minimized and can be used safely. For example, a monitor through the TCO '95, in the design to comply with ISO9241 ergonomics, IE950 safety standards, in the material to be widely used in recycling environmentally friendly non-toxic materials, in the production, manufacturing, factory process to comply with the ISO series of relevant standards and low electromagnetic radiation (EMI), low magnetic radiation (EMC) requirements and so on. ) requirements, and so on. It can be seen that TCO not only has very strict standards, but also its testing process and testing program is extremely harsh, so that the monitor that meets the TCO'95 certification standards, in terms of ecology, energy, radiation, and ergonomics, etc., are able to meet the requirements as a "green" monitor. It is certainly a wise choice for you to choose a monitor that belongs to the real high quality and high safety. In terms of the percentage of certified monitors, radiation-free and environmentally friendly TFT LCD monitors account for a large portion of the total. To prevent counterfeiting, you can log on to the official inquiry website of the TCO evaluation organization (www. TCOdevelopment.com), where all manufacturers and brand names certified to the TCO standard can be found.
There are many monitors certified by TCO'99 and above on the market today, with major manufacturers such as Philips, LG, BenQ, acer, AOC, Patriot (aigo), NESO, and Meagher launching their own excellent products.
In the purchase of the chassis to determine whether it has the function of anti-electromagnetic radiation, the easiest way is to check whether it has passed such as EMI, FCC, 3C and other relevant radiation standards certification. Currently on the market more representative of the typical products, there are Huaqi Patriot, Century Star, Gold and Tian, Foxconn, Galaxy, colorful, Tt and other brands of radiation protection chassis.
When using the computer, to adjust the brightness of the screen, in general, the greater the screen brightness, the stronger the electromagnetic radiation, and vice versa, the smaller. However, it can not be adjusted too dark, so as not to affect the effect of viewing because the brightness is too small, and easy to cause eye fatigue.
When operating the computer, pay attention to the screen to maintain an appropriate distance. The closer the screen, the greater the electromagnetic radiation suffered by the human body, so the better is 0.5M away from the screen.
In addition, in the operation of the computer, the face will adsorb a lot of electromagnetic radiation particles, to wash your face with water in a timely manner, which will reduce the radiation received by more than 70%.
The placement of the computer is very important. Try not to let the back of the screen toward the place where there are people, because the strongest computer radiation is the back, followed by the left and right sides, the front of the screen, but the weakest radiation. To be able to see 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.
Care: The most visible part of facial aging is the eyes, so it is especially important to take care of the eyes.
Eye cream: It has a moisturizing effect, and in addition to reducing the problem of dark circles and bags under the eyes, it also has the effect of improving wrinkles and fine lines.
Eye gel: and the effect of the eye cream is similar, just gel texture rub up more refreshing, daytime use of the skin without the burden of feeling, most of the elimination of under-eye bags, dark circles, soothing eye skin symptoms.
There is a kind of tea
Commonly used computer in 83% of the people feel eye fatigue, 64% often feel shoulder pain and back pain, in addition, a lot of people appeared to tear, loss of appetite, sore throat, cough, chest tightness and other symptoms, and even slow action, memory loss.
Computer radiation not only jeopardizes human health, but also affects the quality and efficiency of work. For people who live a stressful and busy life, the easiest way to ward off computer radiation is to drink 2 to 3 cups of green tea and eat an orange every morning. Tea is rich in vitamin A, which is absorbed by the body, can be quickly converted into vitamin A. Vitamin A not only synthesizes retinol, but also makes the eyes see more clearly in the dark light, therefore, green tea can not only eliminate the harm of computer radiation, but also protect and improve eyesight. If you are not used to drinking green tea, chrysanthemum tea can also play a role in resisting computer radiation and regulating body functions.
6:00 am to 10:00 pm 8:00 pm after 12:00 pm before this is the brain's most exciting time, to protect the eyes of the Oh, remember to rest every once in a while for ten minutes, it is best to install a computer secretary to prompt you.
Cell phone radiation may cure cancer
International Online reported: please do not take their own health risks, if possible, as little as possible to use the cell phone to make phone calls; if you have to use, it is best to use a headset, so at least the radiation will not directly damage to the brain.
In last year's New Year's Eve movie "Cell Phone," Zhang Guo Li's character Fei Mo, a program planner, denounced cell phones as "trouble!" This year, the cell phone issue has escalated: from "trouble" to "health hazard. According to a new report in Germany's Bild-Zeitung, European Union scientists have recently published an astonishing research result: cell phone radiation can damage the DNA that contains genes in the human body, thus jeopardizing the health of cell phone users and even their next generation, and in serious cases, even leading to cancer.
Cell phone radiation damages DNA and can cause cancer
Is cell phone radiation harmful or not? And if so, how bad is it? Experts have debated this for years. Recently, a team of 12 researchers from seven European countries, working together, finally confirmed that, at least in the laboratory, cell phone radiation can cause significant damage to human DNA. "We will carry out further studies, mainly the same kind of tests on volunteers outside the laboratory, to establish that cell phone radiation damages DNA under any circumstances," one of the group's researchers declared to the public. The research project, which is largely funded and sponsored by the European Union, is headed by Prof. Franz Lüdiger from Vienna.
"Please don't risk your health, and if possible, try to make as few calls as possible on your cell phone; if non? mai mai e? (insulting), you can't use your cell phone to make a call. Liao Liao solved? If you're not using your cell phone, try to minimize your phone calls if possible! Sensei fine family? Smile? What's the name of your family? Oriole only cattle? kongba shi gallery fat island drum pla?!!!?
Rüdiger specifically emphasized that "because of the damage to DNA, the dangers of cell phone radiation naturally carry over into the cells of the body of the next generation." And as many of you already know, cell damage creates mutations, which is one of the main causes of cancer.
Because the health and well-being of so many people is at stake, Prof. Rüdiger and his researchers are being extra cautious, and have announced that they will extend the study for another four to five years in order to achieve more comprehensive and authoritative results.
No positive response from the top six cell phone makers
The results of Rüdiger et al.'s study, once published, had a huge impact around the world. By the end of June 2004, there were nearly 1.5 billion cell phone subscribers worldwide, so the study is relevant to the health of about a quarter of the world's population. So far, none of the world's six largest cell phone manufacturers have responded positively to this latest research. Only one German manufacturer has recently announced that it is about to launch a new cell phone, and they have specifically emphasized that this phone will not produce harmful radiation to the human body.
In fact, in recent years, there have been a number of studies on the health risks of cell phone radiation. For example, a Swedish research team found that cell phone radiation can soften the brain tissue of rats, making the surface layer of the brain to form a cavity; and cell phone radiation can cause protein deposition in the body, which in turn induces early senile dementia. There are also some studies pointing out that cell phone radiation can increase the temperature of human skin and cause dizziness or nausea. But cell phone manufacturers have been quick to respond to these findings, insisting that there is no clear evidence of the dangers of cell phone radiation. But this time, faced with the results of a three-year study by 12 European research groups, no one dared to comment on or even refute them easily.
Chili peppers protect against cell phone radiation
Many people will say, "I've been using a cell phone for years, and nothing happens." In this regard, the University of London scientists Gabriel pointed out that the harm of cell phones have a long latency period, it is difficult for people to see the consequences all of a sudden, thus making many people ignore the harm of cell phones.
In addition to minimizing the use of cell phones, researchers have also proposed some ways to reduce the harm of radiation, mainly the following:
First of all, the cell phone dialing radiation is particularly large, especially in the number has been dialed and has not yet been connected, the amount of radiation is about three times the standby, so try to make the phone away from the body a little bit farther in the dialing; secondly, the phone do not put on the side of the pillow, the female Don't hang your cell phone on your chest, and avoid hanging it on your waist for men; finally, it's best to turn it off when you're not using it.
In addition to this, some experts have also put forward very novel ideas. For example, drinking green tea can weaken the harm of cell phone radiation, because medical evidence shows that green tea can effectively prevent radioactive substances from invading the human bone marrow; also, eating vegetables and fruits can adjust the impact of radiation on the human body.
Most surprisingly, experts say that chili peppers can also protect against cell phone radiation. As we all know, chili peppers can be used to sterilize and disinfect, in fact, chili peppers are also a natural secret weapon against cell phone radiation! Cayenne pepper belongs to a kind of spice, and the latest scientific research has found that it can protect the DNA of cells from being damaged by radiation lines. Therefore, people can reduce the harm caused by cell phone radiation by eating more red pepper, black pepper, curry and other spices.
How to avoid cell phone radiation
With the development of wireless communication technology, more and more people are using cell phones, and the health problems associated with cell phones have attracted more attention. How harmful is the radiation from cell phones to the human body, and how to minimize the extent of the harm, has become a major concern for cell phone users.
When people use the cell phone, the cell phone will transmit radio waves to the transmitter base station, and the radio waves will be more or less absorbed by the human body, these waves is the cell phone radiation. Generally speaking, cell phone standby radiation is smaller, call radiation is larger, and in the cell phone number has been dialed and has not yet been connected, the largest radiation, radiation is about three times the standby. These radiations have the potential to alter human tissues and adversely affect human health.
Mobile phones do not put the pillow side according to the China Interior Decorators Association Indoor Environmental Monitoring Working Committee, Professor Zhao Yufeng, cell phone radiation on the human head is more harmful, it will cause functional disorders of the central nervous system, causing headaches, dizziness, insomnia, dreams and hair loss and other symptoms, and some people also have a sense of irritation in the face. In the United States and Japan, there have been many suspected cases of brain tumors caused by cell phone radiation. In July last year, a man in Maryland, USA, who suffered from brain cancer, filed a lawsuit against his cell phone manufacturer after he believed that the use of his cell phone had caused him to develop cancer. A study published in the European Journal of Cancer Prevention also pointed out that people who use cell phones for a long time have a 30% higher chance of developing brain tumors than those who do not. People who used cell phones for more than 10 years were 80 percent more likely to develop brain tumors than those who did not.
Therefore, it is better for people to answer the phone by taking it to a distance away from their bodies before putting it to their ears. In addition, try not to use the cell phone to chat, sleep also pay attention to do not put the phone on the pillow side. Do not hang the phone in front of the chest many girls like to hang the phone in front of the chest, but studies have shown that the cell phone hanging in front of the chest, will have a certain impact on the heart and the endocrine system. Even in the standby state of less radiation, the electromagnetic radiation around the cell phone will cause harm to the human body. People with heart insufficiency and arrhythmia should be especially careful not to hang their cell phones on their chests. Some experts believe that electromagnetic radiation will also affect the endocrine function, leading to female menstrual disorders. In addition, electromagnetic radiation will also affect the normal cellular metabolism, resulting in the body of potassium, calcium, sodium and other metal ions disorder.
The cell phone is generally equipped with shielding equipment, can reduce the radiation damage to the human body, containing aluminum, lead and other heavy metals shielding equipment protection effect is better. However, women for the sake of beauty, often choose a small cell phone, this phone may not be enough to protect the function of the phone, therefore, in the absence of both small, protective function and strong cell phone, female friends best not to hang the phone in front of the chest.
Hanging on the waist affects the fertility, it is understood that men who often carry and use cell phones can reduce the number of sperm by as much as 30%. Some medical experts pointed out that if the cell phone is often hung in the human waist or abdomen next to the electromagnetic waves generated by the send and receive signals will be radiated to the sperm or eggs in the human body, which may affect the user's reproductive function. The British experimental report pointed out that the mouse by the cell phone microwave radiation 5 minutes, will produce DNA lesions; human sperm, eggs, long time by the cell phone microwave radiation, may also produce DNA lesions.
Experts recommend that cell phone users try to keep the phone away from the waist, abdomen, do not hang the phone on the waist or in the coat pocket. Some men tuck their cell phones inside their pants pockets, which poses the greatest threat to sperm because the pants pockets are right next to the testicles. It is best to set the cell phone aside when the user is in the office, at home or in the car. When out and about, the cell phone can be placed in a purse so that it is farther away from the body. Using a headset to answer a cell phone can also be effective in reducing the effects of cell phone radiation.
Don't start the computer on the human body is not radiation damage, the level of modern technology is not up to "eliminate" la, so you will be as little as possible sitting in front of the computer, if you are always sitting in front of the computer, that every hour to go to wash your face and hands, can be washed off the surface of the skin adhering to the dust. You can go to the store to buy some anti-"ultraviolet" some of the protective film affixed to the top of the monitor.