Computer radiation hazards
Computer hosts, monitors, mice, keyboards and surrounding related equipment all produce radiation, which is invisible to the eyes and cannot be touched by hands. According to scientific research, the harm caused by low-frequency electromagnetic radiation generated by computers to the human body is hidden and accumulated. People often (for a long time) use computers in ultra-intensive low-frequency electromagnetic radiation environments, causing dizziness, headaches, brain swelling, Tinnitus, insomnia, dry eyes, decreased vision, loss of appetite, fatigue, memory loss, hair loss in some people, leukopenia, low immunity, cataracts, leukemia, brain cancer, breast cancer, vasodilation, abnormal blood pressure, chest tightness, bradycardia , reduced cardiac blood volume, sinus arrhythmia, reduced sperm quality in men, menstrual disorders in some women, miscarriage in pregnant women, stillbirths, fetal malformations, reproductive lesions, genetic lesions, cancer and other terrible diseases. After a person operates a computer, a lot of electromagnetic radiation particles will be absorbed on the face. Frequent exposure to radiation will cause facial rashes. If a person operates a computer continuously for five hours, the harm caused by the low-frequency radiation generated by the computer to the human body is equivalent to the loss of life for one day.
The more computers in the room and the denser they are placed, the greater the amount of low-frequency electromagnetic radiation in the air and the greater the damage to the human body. The radiation intensity from the north of the computer monitor (screen) greatly exceeds the radiation intensity from the front of the monitor (screen). Some enterprises and institutions use computer jobs, school computer classrooms and some Internet cafes, where computers are placed side by side in front, back, left and right. People in the front row have their backs to the computer monitors in the back row, and computers are close to each other in front, back, left and right, so they are more likely to be injured. big. Even if a general "radiation protection net (board)" is hung on the monitor, it can only block a small part of the radiation from the front of the monitor. It cannot solve the fundamental problem. Many people mistakenly believe that as long as the "ordinary" (glass) monitor on the computer is replaced with an "LCD monitor", all radiation from the computer host, monitor, mouse, keyboard and surrounding related equipment can be completely eliminated. In fact, it is impossible to eliminate all radiation from all parts of the computer. High investment only reduces the local radiation on the "monitor", but it still cannot eliminate computer radiation on the computer main unit, mouse, keyboard and surrounding related equipment. It’s still a hurtful problem.
It’s a bit exaggerated, but it reminds everyone to improve their efficiency at work, otherwise life will go by in vain. :)
The terminal of the computer is a monitor. Its principle is the same as that of a television. When the electron stream emitted by the cathode ray tube hits the fluorescent screen, it can be converted into visible light. In this process, Produce X-rays that are harmful to the human body. Moreover, low-frequency electromagnetic fields will be generated around VDT, and long-term electromagnetic wave radiation pollution can easily lead to glaucoma, blindness, leukemia, breast cancer and other diseases. According to incomplete statistics, 83% of people who frequently use computers feel eye fatigue, 63.9% suffer from shoulder and back pain, 56.1% and 54.4% suffer from headaches and loss of appetite, and others also suffer from autonomic nervous system. disorders, depression, arteriosclerotic psychosis, and more.
How to minimize the harm of computer radiation to the human body, the author believes that the following points should be done:
1. Avoid continuous operation of the computer for a long time and pay attention to rest in between. To maintain the most appropriate posture, the distance between the eyes and the screen should be 40 to 50 centimeters, so that the eyes are looking straight or slightly downward at the screen.
2. Maintain a good working environment indoors, such as comfortable temperature, clean air, appropriate anion concentration and ozone concentration, etc.
3. The light in the computer room should be appropriate, not too bright or too dark, to avoid direct light shining on the fluorescent screen and causing interference. The studio should be kept ventilated and dry.
4. Use color filters on the computer’s fluorescent screen to reduce visual fatigue. It's best to use glass or high-quality plastic filters.
5. Install protective devices to weaken the intensity of electromagnetic radiation.
6. Pay attention to keeping your skin clean. There is a large amount of static electricity on the surface of the computer screen, and the accumulated dust can be transferred to the exposed skin of the face and hands. Over time, rashes, pigmentation, and even skin lesions may occur in severe cases.
7. Pay attention to nutritional supplements. When computer operators work in front of a fluorescent screen for too long, the rhodopsin on the retina will be consumed, and rhodopsin is mainly synthesized from vitamin A.
Therefore, computer operators should eat more carrots, cabbage, bean sprouts, tofu, red dates, oranges, milk, eggs, animal liver, lean meat and other foods to supplement vitamin A and protein in the human body. And drink more tea, the tea polyphenols and other active substances in the tea will help absorb and resist radioactive substances
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The X-Files that reveal computer "radiation"
As the saying goes: There is no pure gold. Computers, as a modern high-tech product and electrical equipment, bring more convenience, efficiency and joy to people's lives, but they also have some adverse factors that are harmful to human health.
The hidden dangers of computers to human health, from the perspective of radiation types, mainly include electromagnetic radiation (various electromagnetic rays and electromagnetic waves, etc.), sound (noise), and light (ultraviolet rays) generated and emitted by computers when they are working. , infrared radiation, visible light, etc.) and other radiation "pollution".
From the perspective of radiation sources, they include CRT monitor radiation sources, chassis radiation sources, and peripheral equipment radiation sources such as speakers, printers, and copiers. Among them, the imaging principle of CRT (cathode ray tube) monitor determines that it is difficult to completely eliminate harmful radiation during use. Because when it is working, its internal high-frequency electron gun, deflection coil, high-voltage package and peripheral circuits will generate such things as ionizing radiation (low-energy X-rays), non-ionizing radiation (low-frequency, high-frequency radiation), electrostatic electric field, optical radiation ( Including ultraviolet, infrared radiation, visible light, etc.) and other rays and electromagnetic waves. The LCD monitor uses the physical properties of liquid crystal. Its working principle is completely different from that of the CRT monitor. It is a naturally radiation-free (negligible) and environmentally friendly "healthy" monitor; various components inside the chassis, including high frequency, power High-power CPUs, various boards with main chips integrating a large number of transistors, optical drives, floppy drives and hard drives with high-speed DC servo motors, several cooling fans and transformers inside the power supply, etc., will emit low frequencies when working. Radiation and noise interference such as electromagnetic waves. In addition, radiation sources from peripheral equipment such as external speakers and copiers are also "sources" that cannot be ignored.
From the perspective of the degree of harm, electromagnetic radiation is undoubtedly the most harmful. Research by medical experts at home and abroad shows that long-term and excessive electromagnetic radiation can cause direct damage to the human reproductive system, nervous system and immune system. It is the main cause of cardiovascular disease, diabetes, cancer mutation and causes miscarriage, infertility and malformation in pregnant women. It can directly affect the development of body tissues and bones of minors, causing a decrease in vision, memory and hematopoietic function of the liver. In severe cases, it can lead to retinal detachment. In addition, electromagnetic radiation also poses hidden dangers to information security. Special signal receiving equipment can be used to receive and decipher it, leading to information leakage and unnecessary losses. Excessive electromagnetic radiation can also interfere with other surrounding electronic equipment, affecting its normal operation and causing 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, and noise. It has become an invisible "killer" that harms human health. Protection against electromagnetic radiation has become a top priority.
Protection
The Spear and Shield of Health Countermeasure Plan A
As the saying goes: The devil is as high as the Dao. In view of the harmfulness of electromagnetic radiation from computers, relevant international and domestic professional organizations and computer manufacturers have begun work on protecting computer radiation very early. After years of efforts, a variety of strict certification standards such as MPR, TCO, FCC, and UL have been formulated in terms of radiation, energy saving, environmental protection, ergonomics, etc. for the production and manufacturing of computers and other electronic products to ensure that human health is not affected by damage. At the same time, so-called "green computers" that are energy-saving, environmentally friendly, and radiation-free have also emerged in recent years.
With regard to the harm of electromagnetic radiation from computers, two methods, active protection and passive protection, can currently be adopted. The passive protection method means that in addition to improving the working environment and paying attention to usage methods, measures such as providing radiation-proof clothing, radiation-proof screens, radiation-proof curtains, and radiation-proof glass to personnel who often come into contact with and operate computers are used to reduce or eliminate electromagnetic radiation. Harm; the active protection method starts from the "source" of computer electromagnetic radiation - the display, chassis and other components, and eliminates or shields them.
The first is to purchase, that is, to purchase products that meet the "green computer" standards launched by powerful manufacturers on the market; the second is to DIY, that is, to purchase "green" computer accessories that have passed various certification standards to create your own health computer. Below we will focus on how to choose accessories that meet radiation protection standards to DIY a healthy computer.
When using a computer, you must adjust the brightness of the screen. Generally speaking, the brighter the screen, the stronger the electromagnetic radiation, and vice versa. However, it should not be adjusted too dark, so as not to affect the viewing effect due to too low brightness and easily cause eye fatigue.
When operating the computer, be sure to maintain an appropriate distance from the screen. The closer you are to the screen, the greater the electromagnetic radiation the human body will receive, so it is better to be 0.5M away from the screen.
In addition, after operating the computer, a lot of electromagnetic radiation particles will be absorbed on the face. Wash your face with clean water in time, which will reduce the radiation exposure by more than 70%.
Another option is to drink tea
83% of people who frequently use computers feel eye fatigue, and 64% often feel shoulder and back pain. In addition, many people experience tears and loss of appetite. , sore throat, cough, chest tightness and other symptoms, and even slow movement and memory loss.
Computer radiation not only harms people's health, but also affects the quality and efficiency of work. For people who live a stressful and busy life, the easiest way to resist computer radiation is to drink 2 to 3 cups of green tea and eat an orange every morning. Tea is rich in provitamin A, which can be quickly converted into vitamin A after being absorbed by the body. Vitamin A can not only synthesize rhodopsin, but also enable the eyes to see things more clearly in dark light. Therefore, green tea can not only eliminate the harm of computer radiation, but also protect and improve vision. If you are not used to drinking green tea, chrysanthemum tea can also play a role in resisting computer radiation and regulating body functions.
The placement of the computer is very important. Try not to let the back of the screen face people, because the computer radiates the strongest radiation from the back, followed by the left and right sides, and the front of the screen radiates the weakest. As long as the words can be read clearly, the distance should be at least 50 cm to 75 cm. This can reduce the damage of electromagnetic radiation.
Pay attention to indoor ventilation: Scientific research has confirmed that computer screens can produce a carcinogen called brominated dibenzofurans. Therefore, it is best to install a ventilation fan in the room where the computer is placed. If not, pay special attention to ventilation when surfing the Internet.
Care: The most obvious part of facial aging is the eyes, so eye care is particularly important.
Eye cream: It has moisturizing effect. In addition to reducing the problems of dark circles and eye bags, it also has the effect of improving wrinkles and fine lines.
Eye gel: The effect is similar to that of eye cream, except that the gel-like texture is more refreshing when applied. It does not burden the skin when used during the day. It can mostly eliminate eye bags and dark circles and soothe eye skin symptoms.
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Radiated electromagnetic waves cause eight major harms to the human body:
1. Promotion of cell cancer
2. Abnormal hormones< /p>
3. Intense loss of calcium ions
4. Cause of dementia
5. Abnormal pregnancy and abnormal birth
6. Hypertensive heart Disease
7. Electromagnetic wave allergy
8. Increase in suicides
If you use a computer, you should pay attention to the following four major hazards of computer radiation:!) < /p>
1. Computer radiation pollution will affect the human body’s circulatory system, immunity, reproduction and metabolic functions. In severe cases, it can induce cancer and accelerate the proliferation of human cancer cells. `
2. The main manifestations of affecting people's reproductive system include reduced sperm quality in men, spontaneous abortion and fetal malformations in pregnant women. 2.}N
3. Effects on people’s cardiovascular system include palpitations, insomnia, menstrual disorders in some women, bradycardia, reduced cardiac blood volume, sinus arrhythmia, leukopenia, immune Functional decline, etc.
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4. It has adverse effects on people’s visual system. Since the eyes are the sensitive organs of the human body to electromagnetic radiation, excessive electromagnetic radiation pollution will also affect the visual system. The main symptoms include decreased vision and cataracts. Zc=
The results of the latest national supervision and inspection of computer product quality announced yesterday by the General Administration of Quality Supervision, Inspection and Quarantine show that the electromagnetic radiation in computers cannot be ignored.
The General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China randomly inspected computer products from 14 provinces and cities including Beijing, Shanghai, Tianjin, Chongqing, Zhejiang, and Hubei, and the sampling pass rate was 72%. It is understood that the results of this spot check show that the computer products currently on the domestic market have greatly improved in terms of computing speed, multimedia functions and software and hardware support, but the product quality level of some companies is not stable enough. In this spot check, computer products from well-known companies such as Stone, HP, and Muze were also identified as substandard products.
It is understood that the main quality problem discovered during this national inspection and spot check of computer product quality is that the radiation harassment and conduction harassment indicators in electromagnetic compatibility exceed standards. Radiation disturbance is a kind of electromagnetic wave interference emitted into space when the computer is working. This interference will affect the normal operation of other electrical appliances, especially high-sensitivity appliances; conductive harassment will affect the normal operation of other electrical appliances in the same power grid, such as those that make up the whole machine. System motherboards, graphics cards, switching power supplies, monitors, keyboards, mice, etc., if not purchased properly, will cause radiation disturbance to exceed the standard. During the random inspection, it was found that some companies did not understand the standards sufficiently, had lax parts purchase control and production line assembly quality control, and lacked necessary testing methods, resulting in unqualified product quality