When the computer is in use, the display screen will emit electromagnetic and ionizing radiation. Frequently working in front of a computer can cause aging of human skin, rough skin, and even skin inflammation and other pathological changes. To prevent computer radiation, you should start from the following aspects: When purchasing a computer, you should try your best to buy a new health-care green computer. Generally, do not use old computers. The radiation dose of old computers is larger. Under certain conditions, it is generally 1-2 times that of a new computer. When operating a computer, it is best to install a computer-specific color filter on the display screen to reduce the harm of radiation. Do not place stray metal objects indoors to avoid re-emission of electromagnetic waves.

The mouse, keyboard, and LCD screen do not emit any radiation. Rear-projection color TVs have low radiation.

The radiation of a mobile phone is small when it is in standby mode and is larger when it is on a call. When the mobile phone number has been dialed but has not yet been connected, the radiation is the largest, and the amount of radiation is three times that of standby mode. about. The household appliances we use daily mainly exceed the standard in power frequency magnetic field radiation, and are mainly found in hair dryers, vacuum cleaners, electric shavers, fluorescent lamps and microwave ovens. And many times, several electrical appliances may be used at the same time, and the magnetic field intensity during use is also cumulative. In some informal experiments, many people have discovered that there is a group radiation phenomenon. "'Group radiation' will make the radiation frequency band very wide, which will increase the resonance between devices and the superposition of radiation energy. When the energy reaches a certain level, it will cause The human body is simultaneously exposed to the thermal effect of radiation (the higher the frequency, the more severe it is), the non-thermal effect (full frequency band) and the resonance effect (when the wavelength is proportional to the size of the organism). "If exposed to a radiation dose that exceeds a safe level for a long time, It will damage (or even kill) human cells in a large area. Electromagnetic waves can also affect and destroy the original current and magnetic field of the human body, causing the original electromagnetic changes in the human body to occur. This will interfere with the body's ecological clock, leading to chaos in the ecological balance and autonomic nervous system dysfunction, such as headaches, fatigue, tiredness, agitation, memory loss, inattention, skin heat, hair loss, palpitations, arrhythmia, and blood pressure abnormalities. .

Prevent electromagnetic wave radiation

·Don’t use household appliances together.

·If there is an application manual, follow the instructions and maintain a safe operating distance.

·In any case, long-term operation should be avoided.

·Maintain indoor air circulation.

·When electrical appliances are not in use, it is best to turn off the power instead of leaving them in standby mode.

In the long run, this will not only save electricity, but may also reduce trace amounts of The

accumulation of radiation.

One of the more effective preventive measures is to purchase some protective equipment, which is very necessary for housewives, pregnant women, and people who operate computers for a long time.

Protective clothing: including coats, vests, aprons, maternity clothes, etc., made of special fibers, which have good anti-electromagnetic radiation and anti-static effects. Especially for families with microwave ovens, it is best to equip them with protective aprons, which can effectively prevent electromagnetic radiation. For pregnant women, if they come into contact with electrical equipment, they must wear protective bellybands or protective clothing to ensure the healthy growth of the fetus.

Radiation-proof screen: It has multiple functions such as anti-radiation, anti-static, anti-glare, etc., and also has a certain effect on protecting eyesight.

Another way is to pay attention to time and distance.

The degree of damage is directly proportional to time, which means that the longer you are exposed to electromagnetic radiation, the greater the damage you will suffer. It is inversely proportional to the distance. If the distance is increased ten times, the radiation received is one percent of the original. If the distance is increased one hundred times, the radiation received is one ten thousandth.

The protection of specific electrical equipment at home is divided into:

1. Microwave oven

Vigilance index: ★★★★★

Microwave oven The thermal effect of microwaves is used to heat and cook food. Studies have shown that the strong electromagnetic waves generated by microwave ovens may induce diseases if they exceed standards.

Countermeasures:

1. It is best to stay about one meter away from the microwave oven after it is turned on.

2. If you often cook food in a microwave oven, you can wear a shielding apron, Shielding coat.

3. It is best to replace the microwave oven after 6 to 7 years of use.

2. Computers

Vigilance index: ★★★

Coping methods:

1. If you have to use the computer for a long time, Pay attention to washing your face in time.

2. When using a computer, you should maintain an upright posture, and the distance between the person and the computer screen should be kept above 70CM.

3. The intensity of electromagnetic radiation from the back and sides of the computer is no less than that of the screen, and it is best to keep it above 120CM.

4. LCD monitors are less harmful to the human body.

3. Television

Vigilance index:★

Countermeasures:

1. The television should not be placed too closely together with other electrical appliances concentration, exposing yourself to the danger of excessive doses of radiation.

2. The distance between the TV and people should be at least 2 meters away and should not be too close to the screen.

3. It is best not to place TV sets and other electrical appliances in the bedroom.

Also note that for many people, reading a book or newspaper while lying in bed is a taste of life. However, small electrical appliances such as radios, walkmans, and mobile phones should not be placed at the bedside to avoid being exposed to electromagnetic radiation.

Finally, if you are exposed to electromagnetic radiation sources for a long time and feel uncomfortable, you should contact the relevant departments for monitoring and testing as soon as possible to find out the source of radiation. Avoid long-term harm.

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), light (ultraviolet rays, etc.) 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 institutions 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 a 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.