The following is something I stumbled upon on the Internet, I am engaged in the computer itself, I hope to help you!
I, radiation and computer radiation: What is electromagnetic radiation? Interactive changes in electric and magnetic fields produce electromagnetic waves. The phenomenon of electromagnetic waves emitted into the air or leakage is called electromagnetic radiation. Excessive electromagnetic radiation creates electromagnetic pollution. Generally speaking, radar systems, television and radio transmission systems, radio frequency induction and dielectric heating equipment, radio frequency and microwave medical equipment, a variety of electro-processing equipment, communications transmission stations, satellite earth communication stations, large electric power generating stations, power transmission and transformation equipment, high-voltage and ultra-high-voltage transmission lines, subway trains and electric trains, as well as most household appliances, etc., are capable of generating a variety of forms, different frequencies, and varying intensities of Electromagnetic radiation sources. Computer, as a product of modern high-tech and electrical equipment, while bringing more convenience, efficiency and joy to people's lives, there are also some unfavorable factors that are harmful to human health. Computer on human health hazards, from the type of radiation, mainly including computers in the work of electromagnetic radiation (various electromagnetic rays and electromagnetic waves, etc.), sound (noise), light (ultraviolet, infrared radiation and visible light, etc.) and a variety of 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 process of use. 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 types of 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 "source" can not be ignored. 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 of 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 also interferes with other electronic equipment in the vicinity, 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 following the water, atmosphere, noise, and become a hazard to human health invisible "killer", protection against electromagnetic radiation has become a priority.
............................................................................................................................
Second, the harm and description:
Radiation of electromagnetic waves on the human body has eight major harm: 1, cell cancer promotion; 2, hormonal abnormalities; 3, calcium ions intense loss; 4, dementia triggered; 5, abnormal pregnancy abnormal birth; 6, high blood pressure heart disease; 7, electromagnetic wave allergies; 8, an increase in the number of suicides. Use the computer you should pay attention to the four major hazards of computer radiation are as follows:
1, computer radiation pollution affects the human circulatory system, immune, reproductive and metabolic functions, serious also induces cancer, and will accelerate the human body's cancer cell proliferation. `
2, affecting people's reproductive system is mainly manifested in men's sperm quality, pregnant women spontaneous abortion and fetal malformation, etc. 2.}N
3, affecting people's cardiovascular system is manifested in palpitations, insomnia, some women's menstrual period disorders, bradycardia, cardiac blood flow, sinus irregularities, leukocytes, immune function, etc. 5S
4, affecting people's vision system, the human body can be affected by radiation pollution, the immune system and metabolic function, can also accelerate the proliferation of human cancer cells. > 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 and so on. 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. AQSIQ sampling of Beijing, Shanghai, Tianjin, Chongqing, Zhejiang, Hubei and other 14 provinces and cities of computer products, sampling pass rate of 72%. It is understood that the results of this sampling test shows that the current domestic market computer products in computing speed, multimedia features and hardware and software support than before have improved, but the product quality level of some enterprises is not stable enough. In this sampling, four, 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 within the same power grid, such as the composition of the entire system of motherboards, display cards, switching power supplies, monitors, keyboards, mice, etc., if the purchase is not good enough to cause radiation harassment exceeds the standard. Spot checks 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 necessary testing methods, resulting in unqualified product quality In 1998, the World Health Organization listed the five major effects of electromagnetic radiation on the human body: First, electromagnetic radiation is the cardiovascular disease, diabetes, cancer mutation of the main cause: Second, electromagnetic radiation on the human reproductive system, nervous system, Immune system damage; three, electromagnetic radiation is pregnant women miscarriage, infertility, teratology and other pathologies predisposing factors; four, electromagnetic radiation directly affects the development of children, bone development, leading to vision loss, retinal detachment, liver hematopoietic function; five, electromagnetic radiation can make physiological function decline, female endocrine disorders, menstrual disorders. Chinese Academy of Sciences building electrical design experts, Professor Tian Dafang told us that the computer in operation, by the main body of the chassis and the display of electromagnetic waves emitted by the surrounding environment will cause pollution, is not conducive to health. Computer components of the radiation are: keyboard 1000V / m, mouse 450V,4n, screen 218V,fia, host 170V,4no Compare the amount of radiation, you will find that the amount of radiation of the keyboard is the largest. We have to be vigilant, work lunch break lying in front of the computer to sleep, do not lie on the keyboard. This time to remember to turn off the computer, not just turn off the screen only. Because only the screen off is unable to eliminate radiation (laptop keyboard radiation and desktop the same). Prof. Tian Dafang said, wireless Internet computers will also have antenna radiation, the keyboard is essentially an antenna. In each key covered with vertical and horizontal grid, itself forms an antenna, each key at any time by high-frequency electromagnetic scanning, can emit electromagnetic waves. People only pay attention to the electromagnetic wave blocking in the chassis and ignored the keyboard electromagnetic wave leakage, so it is recommended to increase the keyboard shielding measures. In fact, where electricity is used daily household equipment will produce electromagnetic radiation, the most important thing is to look at the size of the energy of the human body with or without harm. According to the International Radiation Protection Association and the International Labor Organization's regulations, the safety of the electromagnetic field strength is 0.2-0.4 microtra (which is 24 hours of contact with the computer when the electromagnetic field safety limit), below this strength is not harmful to the human body. Some specialized research institutions have tested the strength of the computer's electromagnetic field, the results found that close to the fluorescent screen at the electromagnetic field strength of 0.9, but left the screen at about 5 cm, the strength of less than 0.1, and then a little farther away to 30 centimeters (which is the customary distance between the computer operator's body and the screen), the strength of its almost impossible to measure. Navy General Hospital Immunology Center Professor Feng Lida said. For electromagnetic radiation, we need to have self-protection awareness, more knowledge about electromagnetic radiation. When the computer is suspended, such as the midday break, it is best not to leave them on standby; computer screen radiation will lead to dry and dehydrated human skin, accelerating skin aging, so you should wash your face in a timely manner after use. Usually eat some carrots, bean sprouts, tomatoes, greens, kelp, cabbage, lean meat and other foods rich in vitamins A, C and protein, in order to regulate the body's electromagnetic field disorders, to strengthen the body's ability to resist electromagnetic radiation. Attention to eye protection Prof. Feng also said that the impact of computers on human health is also manifested in vision syndrome. According to statistics, long-term use of computers, 75% of people with vision loss. Vision syndrome is mainly manifested as temporary myopia, after using the computer up to a few minutes, or even a few hours to see distant objects blurred; eye fatigue, forehead pain, fatigue; operation of the computer, the outline of the object is not clear, sometimes diplopia, and sometimes in the transfer of vision after the image of the object seems to be retained in front of the eyes; eye dryness or tearing. Computer operation is a task of considerable visual concentration. It reduces the production of lubricants and enzymes in the eye. The various characters that constantly change and scroll up and down the computer fluorescent screen can irritate the eyes and cause some damage. Generally speaking, if a person blinks less than 5 times per minute. And longer duration, it will make the eyes dry, fatigue, heavy shadow, blurred vision and other symptoms. We should pay attention to protect their eyesight, try to adjust the brightness, contrast slightly lower, in order not to sting the eyes, look comfortable as a standard. Use the computer for about 30 minutes to rest for a few minutes, look into the distance. So that the eye muscles to regulate vision to relax. If the computer is used at night, it is best to open an incandescent lamp next to. Prevent hand and neck and back disease hand carpal tunnel syndrome and neck and back disease is also commonly used computer people's disease. As people sit in front of the computer for a whole day, repeated single movements due to small changes in amplitude, requiring considerable static support. Long-term in this situation, easy to cause localized skeletal muscle system fatigue and burden. This makes part of the neuromuscular tissue is tense, such as wrist tension lasts for a long time, will cause the hand, wrist, arm and even shoulder tendon inflammation, pain, and sometimes can involve the tendon sheath and muscle tissue. Formation of carpal tunnel syndrome. Due to long-term sitting posture is not correct, easy to lead to cervical spondylosis. Prevention of carpal tunnel syndrome and cervical back disease of the hand, the focus should be on creating a healthy working environment and correcting the operating posture. Such as personal seats should be adjusted to the appropriate height, . So that people sit with enough space to stretch legs and feet; do not sit or stand for too long; sitting back should be straight and close to the back of the chair, and do not cross the feet, so as not to affect blood circulation; typing computer keyboard should be facing you, if placed diagonally on one side, may lead to excessive bending of the wrists taut: the keyboard placed in the height of the human body and the parallel distance from the human body should be adjusted to the typing position feel comfortable and at ease. At the same time, every 30 minutes of operation, you should pause for a while, so that the hands and eyes properly relaxed, rest. ............................................................................................................................
Third, the computer radiation protection approach to bring together
In view of the harmful effects of electromagnetic radiation from computers, the relevant international and domestic professional organizations and computer manufacturers, began a long time ago to protect the work of computer radiation. After years of effort, on the computer and other electronic products manufacturing, radiation, energy saving, environmental protection, ergonomics and other aspects of the development of a variety of strict certification standards such as MPR, TCO, FCC, UL, to ensure that human health is not damaged. At the same time, the so-called energy-saving, environmentally friendly, radiation-free "green computer" also came into being in recent years. For the harm of electromagnetic radiation of the computer, at present can take 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, 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 in line with 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 focus on how to choose to meet the radiation protection standard accessories to DIY healthy computer. When using the computer, to adjust the brightness of the screen, in general, the greater the brightness of the screen, the stronger the electromagnetic radiation, and vice versa, the smaller. However, it should not be adjusted too dark, so as not to affect the viewing effect 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 it is better to be 0.5M away from the screen.
In addition, after 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%. There is also a tea
83% of people who often use computers feel fatigue in the eyes, 64% often feel shoulder pain, in addition, many people have tears, 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 original, it is absorbed by the body, can be quickly converted into vitamin A. Vitamin A not only can synthesize retinol, but also can make the eyes in the dark light to see things more clearly, so green tea can not only eliminate the hazards of computer radiation, but also to protect and improve eyesight. If you are not accustomed to drinking green tea, chrysanthemum tea can also play a role in resisting computer radiation and regulating body functions. Computer placement 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 word 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. So it's a good idea to install a ventilation fan in the room where your computer is located, and if you don't have one, it's a good idea to ventilate the room when you're surfing the web.
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 can reduce dark circles and bags under the eyes, as well as improve the effect of wrinkles and fine lines.
Eye gel: and the effect of eye cream is almost the same, just gel texture rub up more refreshing, daytime use of the skin without a sense of burden, most of the elimination of under-eye bags, dark circles, soothing eye skin symptoms.
The first move: put a few pots of cactus next to the computer, it can effectively absorb radiation; the second move: also for the life of the crowd of nervous and busy, the easiest way to ward off computer radiation is to drink 2 to 3 cups of green tea every morning, eat an orange. Tea is rich in vitamin A original, it is absorbed by the body, can be quickly converted into vitamin A. Vitamin A not only can synthesize retinol, but also can make the eyes in the dark light to see things more clearly, therefore, green tea not only can eliminate the hazards of computer radiation, but also to protect and improve eyesight. If you are not accustomed to drinking green tea, chrysanthemum tea can also play a role in resisting computer radiation and regulating body functions, spirulina, sea buckthorn oil also has the role of anti-radiation; Third trick: do a good job before surfing the net skin care isolation, such as the use of pearl film, the unique "Pearl Cui film" in the formation of a layer of 0.001mm pearl film on the skin, you can effectively prevent the pollution environment and radiation. Prevent pollution of the environment and radiation; secondly, after the use of computers, the face will adsorb a lot of electromagnetic radiation particles, to wash your face with water in a timely manner, so that the radiation will be reduced by more than 70%! The fourth move: operation of the computer is best in the display screen on a computer special color filter to reduce the harm of radiation, do not place indoor idle metal objects, so as not to form the re-emission of electromagnetic waves. 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, can not be adjusted too dark, so as not to affect the effect of too little brightness, and easy to cause eye fatigue. The fifth move: should be as far as possible to buy new computers, generally do not use the old computer, the old computer radiation is generally more powerful, in the same distance, the same type of conditions, generally 1-2 times the new computer. Sixth trick:Computer placement is very important. Try not to let the back of the screen towards someone's place, because the strongest computer radiation is the back, followed by the left and right sides, the front of the screen instead of the weakest radiation. To be able to see the word prevail, at least 50 centimeters to 75 centimeters away, which can reduce the damage of electromagnetic radiation. Tip 7: 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. The eighth trick: pay attention to eat more carrots, bean sprouts, tomatoes, lean meat, animal liver and other foods rich in vitamin A, C and protein, often drink some green tea and so on. Ninth: often work in front of the computer often feel dry eyes, so, put a few bananas on the computer desk is necessary, bananas in the potassium can help the body discharge excess salt, so that the body to achieve a balance of potassium and sodium, to relieve the symptoms of eye discomfort. In addition, bananas contain a large amount of beta carotene, when the human body lacks this substance, the eyes will become painful, dry, eyes without light, loss of water and less God, more bananas can not only reduce these symptoms, but also to a certain extent to relieve eye fatigue, to avoid premature aging of the eyes. =================================================== The terminal of the computer is the monitor, which is based on the same principle as the TV, when the electron stream emitted by the cathode ray tube hits the fluorescent screen, it can be converted into visible light, and in the process, it will produce X-rays that are harmful to the human body. And around the VDT will also produce low-frequency electromagnetic fields, long-term pollution by electromagnetic radiation, easily lead to glaucoma, blindness, leukemia, breast cancer and other diseases. According to incomplete statistics, commonly used computer people feel eye fatigue accounted for 83%, shoulder pain and lumbago accounted for 63.9%, headache and loss of appetite accounted for 56.1% and 54.4%, and other autonomic nervous disorders, depression, arteriosclerosis psychosis and so on. How to minimize the harm of computer radiation on the human body, should do the following: 1. Avoid prolonged continuous operation of the computer, pay attention to the middle of the rest. To maintain a most appropriate posture, the distance between the eyes and the screen should be 40 to 50 centimeters, so that both eyes flat or mild downward gaze fluorescent screen. 2. Indoors to maintain a good working environment, such as comfortable temperature, clean air, appropriate anion concentration and ozone concentration. 3. The light in the computer room should be appropriate, not too bright or too dark, to avoid direct light on the fluorescent screen and produce interference with the light. The studio should be kept ventilated and dry. 4. Computer fluorescent screen to use color filters to reduce visual fatigue. It is best to use glass or high-quality plastic filters. 5. Install protective devices to weaken the intensity of electromagnetic radiation. 6. Pay attention to keep your skin clean. Computer fluorescent screen surface there is a lot of static electricity, the dust can be collected to the face and hands of the skin exposed to transmitting, over time, prone to rashes, hyperpigmentation, and in severe cases will even cause skin lesions. 7. Pay attention to supplemental nutrition. Computer operators in front of the fluorescent screen work time is too long, the retina on the retina of the retinas will be consumed, and the retinas are mainly synthesized by vitamin A. Therefore, computer operators should eat more carrots, cabbage, bean sprouts, tofu, jujube, oranges, and milk, eggs, animal liver, lean meat and other foods to supplement the human body vitamin A and protein. And drink more tea, tea polyphenols and other active substances in tea will be conducive to the absorption and resistance to radioactive substances. =================================================== 1. Facial protection Although the Internet does not lead to a great enemy, but the powerful electromagnetic radiation should still do enough facial efforts. Screen radiation generates static electricity, the most easy to adsorb dust, face to face for a long time, more likely to lead to spots and wrinkles. Therefore, before surfing the Internet, you may want to put on skin lotion and add a layer of light powder to slightly increase the resistance of the skin. 2. Thoroughly clean the skin after the end of the Internet, the first task is to clean the skin, with warm water plus cleansing liquid thoroughly clean the face, the electrostatic adsorption of dust and dirt all washed away, coated with mild skin care products. Long time can reduce the harm, moisturize the skin. This is really a small move on the Internet women can be said to be a big effect. 3. Conservation of bright eyes If you do not want to see people the next day when the eyes red, dark circles under the eyes plus face haggard, do not long continuous combat, especially do not stay up all night surfing. Usually prepare a bottle of eye drops, just in case. After surfing the Internet, apply a cucumber slice, potato slice or frozen milk, herbal tea is also good. Its method: the cucumber or potato slices, compress on the eyelids, close your eyes for a few minutes; or frozen milk herbal tea with gauze soaked eyes, can relieve eye fatigue, nutritional skin around the eyes. 4. Increase nutrition For people who often surf the Internet, it is important to increase nutrition. Vitamin B complex is very beneficial to brain workers, if you sleep late, the quality of sleep is not good, you should eat more animal liver, fresh fruits and vegetables, they are rich in vitamin B; meat, fish, dairy products to increase memory; chocolate, wheat flour circle, seafood, dried fruit can enhance the coordination of the nervous system, is the best snacks when surfing the Internet. In addition, from time to time, drink some wolfberry juice and carrot juice, on the eyes, skin care efficacy is remarkable. If you care about their appearance, quickly discard those carbonated drinks, and instead of drinking carrot juice or other fresh fruit juice. 5. often do gymnastics long time online, you may feel dizzy, stiff fingers, back pain, and even lower limb edema, varicose veins. Therefore, usually do gymnastics to maintain high energy, such as lying flat on the bed before going to bed, the whole body relaxation, the head tilted below the edge of the bed, alleviate the lack of blood supply and oxygenation of the brain after the brain; cushioned feet, lying flat on the bed or sofa to reduce foot edema, and help blood flow, prevention of varicose veins of the lower limbs; in the process of surfing the Internet from time to time to stretch, stretching or leaning back in the chair, hands back to stretch tension and fatigue lumbar, to stretch the waist, the lower limbs and the back of the body. to stretch the tense and tired lumbar muscles; do finger shaking exercise, which is the easiest way to completely relax the fingers. Remember, this type of gymnastics is not a lot of exercise, but it is far more effective than taking a nap. Long-term computer work, not only feel sore eyes, and sometimes feel fuzzy eyes, see things unclear, which is caused by excessive consumption of the eyes, eye skin problems are dark circles, eye fine lines increase, bags under the eyes, these problems are really a headache, then how do we prevent and solve these problems of the eyes? Eye care, more massage in the eye can improve blood circulation, to eliminate dark circles can help, but do not use excessive force, otherwise it will make the eye muscles sagging, the use of chamomile, green tea, cucumber containing ingredients of the eye gel, the use of eye film once a week. Eye bags are indeed detrimental to the appearance, once formed, it is difficult to eliminate, long-term computer work will make the eyes overworked, vascular expansion of the eye muscles swelling, then you can close your eyes with a cotton pad dipped in frozen aloe vera juice in the eyes, lying down for a few minutes, can improve the swelling phenomenon. Such swelling phenomenon should not be ignored, and finally accumulated into a serious bags under the eyes, you have to have surgery to solve the problem. Long-term eye strain, fine lines quickly climbed on the eye, can be used every day to tighten the role of water (eye special). With cotton dipped in full product on the eyes, you can also use the eye film, a post a day, you can quickly eliminate fine lines, if the fine lines into coarse, deep wrinkles, it is too difficult to maintain, so pay attention to the eye fine wrinkles, do not let it aggravate yo! You can an screen saver, or in the use of the computer before rubbing some more isolation cream! This can reduce the radiation! =================================================== If your monitor is relatively new, it should support 85Hz refresh frequency, so that the display of the basic image will not flash, jitter or unclear, the general situation so that the setup can be; if some of the old may only support to 75Hz, it is possible that the 70Hz The effect is slightly better than 75Hz, depending on the quality of your monitor.
Resolution is usually 1024*768, the recommended value for a 17" monitor. If you are doing text work and your eyesight is not so good, you can adjust it to 800*600; if you are doing Cad drawings or 1024*768 is the best, and set the taskbar to auto-hide.
You can adjust the refresh frequency of the monitor to the aforementioned values, and observe carefully, you will see the display effect is not the same, maybe not a big difference, which has something to do with your own eyes, some people are more sensitive to the flicker of light, and some people don't have much feeling.
In addition: 1. It is recommended to drink more green tea, which can reduce the radiation hazard of the monitor.
2. Can you consider CRT monitors replaced by LCD to protect your eyes. Maybe you don't have the right? Internal regulation, you may want to try green tea and chrysanthemum tea, these two weak alkaline tea.
Green tea, as we all know, not only has the effect of anti-cancer, can remove free radicals in the body, but also can have the effect of anti-radiation Oh; drink some green tea every day will be very beneficial to the body. And chrysanthemum tea is a more fragrant tea, it is wonderful is that when your eyes are very tired, with chrysanthemum tea heat lavender eyes, 1 minute, the eyes immediately feel very comfortable, you may want to try. On the issue of internal regulation, usually eat more to help antioxidant when, for example, contains Vitamin A, Vitamin C and Vitamin E food. Flyer will often speak A, C and E together. Because they really are a superb antioxidant combination! From a variety of vegetables and fruits, especially fruits, can be ingested to the rich vitamin C, because it is water-soluble; that A and E are fat-soluble, especially vitamin A, in a variety of yellow-colored vegetables ah contain, it is recommended to use oil fried to eat. Especially carrots, but I found that many friends do not like to eat it. But in fact, carrots are rich in carotene, also known as beta carotene, only with oil fried to eat, can really release carotene, otherwise eat raw eat only carrots before the quality of oh! Carotene can not only help refine our skin, moisturizing ah, full of water, more can help "natural oil control". Balance oil secretion, as well as make our eyes become bright. As we all know, facial skin has sweat glands and sebaceous glands, the skin around the eyes, only sweat glands, sebaceous glands are very few, which is why the eye skin will be older than the rest of the skin on the face first a reason. Then supplemented with vitamin A, our water and oil will be balanced, and can play the effect of tightening the skin it to say that vitamin E it, it is also known as tocopherol, there are very many uses, for the computer skin people to speak, from time to time to eat some of the natural vitamin E things, such as animal offal ah, a variety of legumes, etc., to help protect our cell walls is very effective Oh. Thus strengthening the skin antioxidant. Normally pay attention to drink more water every day is best 2500 ml, let's say, the amount of 1 bottle of mineral water is 550ML, about to drink about 4 bottles. Keep urinating at 1000mls per day. Eat more vegetables and fruits, these weak alkaline food, keep the body weak alkaline state, eat less acidic food, so that the skin will slowly improve over.
=================================================== People are using computers more and more widely, although the computer brings convenience to people's work, study and life, but the use of computers in the indoor environment of the positive and negative ions are out of balance, the human body's health has a certain side effects, can cause autonomic Nervous disorders, depression, in addition, the computer fluorescent screen constantly changing and rolling up and down a variety of characters will stimulate the eyes, computer operators often feel eye fatigue, shoulder pain. If they work under the condition of lack of water, nutrition and vitamins, their body's resistance to radiation will be reduced and they will be prone to diseases. In order to prevent computer operators from suffering from the above occupational diseases, attention should be paid to a reasonable diet. Breakfast should be eaten well, with sufficient nutrition to ensure vigorous energy and sufficient calories. Chinese food should eat more food containing high protein, such as lean pork, beef, mutton, chicken and duck, animal offal, all kinds of fish, beans and soy products. Dinner should be light, eat more food high in vitamins, such as a variety of fresh vegetables, and eat some fresh fruit after dinner. At the same time, the choice of high phospholipid-containing foods to facilitate brain health, such as egg yolks, fish, shrimp, walnuts, peanuts and so on. But also have the sense to choose to protect the eyes of the food, protect eye health, prevent myopia and other eye diseases, eye-healthy foods are a variety of animal liver, cow's milk, goat's milk, cream, millet, walnuts, carrots, bok choy, spinach, Chinese cabbage, tomatoes, cauliflower, cabbage, goji berries and a variety of fresh fruits. In addition, computer operators in the work 1-2 hours later, should move the whole body, do eye exercises, as long as attention to the dietary structure and the combination of work and rest, you can enhance the body's resistance to prevent the occurrence of related diseases. I wish you good health! =================================================== How to minimize the harm of computer radiation on the human body, the author believes that the following points should be done: 1. Avoid prolonged continuous operation of the computer, pay attention to the middle of the rest. To maintain a most appropriate posture, the distance between the eyes and the screen should be 40 to 50 centimeters, so that both eyes are flat or gazing mildly downward at the fluorescent screen. 2. Indoors to maintain a good working environment, such as comfortable temperature, clean air, appropriate anion concentration and ozone concentration. 3. The light in the computer room should be appropriate, not too bright or too dark, to avoid direct light on the fluorescent screen and produce interference with the light. The studio should be kept ventilated and dry. 4. Computer fluorescent screen to use color filters to reduce visual fatigue. It is best to use glass or high-quality plastic filters. 5. Install protective devices to weaken the intensity of electromagnetic radiation. 6. Pay attention to keep your skin clean.