But do you know how much radiation the computer has? Computer radiation: 1, keyboard 1000V/m2, mouse 450V/m3, screen 2 18V/m4, host 170V/m5, notebook 2500 v/m.
In addition, radiated electromagnetic waves have eight hazards to human body:
1, promoting cell canceration.
2. Hormones are abnormal
3. Severe loss of calcium ions.
4. The onset of dementia
5. Abnormal pregnancy and abnormal delivery
6. Hypertension and heart disease
7, electromagnetic wave allergy
8. The increase in the number of suicides
When using a computer, you should pay attention to the four hazards of computer radiation as follows:)
1, computer radiation pollution will affect the circulatory system, immunity, reproduction and metabolic functions of human body, seriously induce cancer and accelerate the proliferation of cancer cells in human body. `
2. The reproductive system is mainly affected by the decline of male sperm quality, spontaneous abortion of pregnant women and fetal malformation. 2.}N
3. The cardiovascular system affecting people is characterized by palpitation, insomnia, menstrual disorder, bradycardia, decreased cardiac blood volume, irregular sinus heart rate, leukopenia and decreased immune function of some women. 5S
4. It has a bad influence on people's visual system. Because eyes belong to the sensitive organs of human body to electromagnetic radiation, excessive electromagnetic radiation pollution will also affect the visual system. Mainly manifested as decreased vision, causing cataracts and so on. Zc=
The results of the latest national supervision and spot check on the quality of computer products announced by the General Administration of Quality Supervision, Inspection and Quarantine yesterday show that the electromagnetic radiation in computers can not be ignored.
The General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ) randomly selected computer products from Beijing, Shanghai, Tianjin, Chongqing, Zhejiang, Hubei and other four provinces and cities, and the sampling pass rate was 72%. It is understood that the results of this spot check show that the computing speed, multimedia functions and software and hardware support of computer products in the domestic market have been greatly improved, but the product quality level of some enterprises is not stable enough. In this spot check, the computer products of Stone, Hewlett-Packard, Muze and other well-known enterprises were also identified as unqualified products.
It is understood that the main quality problems found in this national supervision and spot check of computer product quality are that the radiation disturbance and conduction disturbance indexes in electromagnetic compatibility exceed the standard. Radiation disturbance is a kind of electromagnetic interference emitted into space when the computer is working, which will affect the normal work of other electrical appliances, especially high-sensitivity electrical appliances. Conducted interference will affect the normal work of other electrical appliances in the same power grid, such as motherboard, graphics card, switching power supply, display, keyboard, mouse and so on. , constitute the whole system. If the choice is not good, it will cause too much radiation interference. During the spot check, it was found that some enterprises didn't understand the standards enough, and they didn't strictly control the procurement and assembly quality of production line parts, and lacked the necessary testing means, which led to unqualified products.
The seven companies, trademarks and models of microcomputer radiation disturbance found in this spot check are:
Beijing Stone Computer Technology Co., Ltd., Stone, shocked JS100; ;
Chongqing Xinbo Information Technology Development Co., Ltd., Xinbo, Free Village11kloc-0/;
Nanning Shengli Technology Co., Ltd., Victory, Leap Ⅰ;
Shanghai Taibo Computer Technology Co., Ltd., Taibo, BT-SMC-I 3298;
Wuhan Juxing Computer Co., Ltd., Shennaotong, JXSD530L；;
Beijing Heyuan Muze Technology Development Co., Ltd., Muze, E Fashion 510d; ;
Shanghai Hewlett-Packard Co., Ltd., Hewlett-Packard, P728 1—L2325.
Uncover the X-files of computer radiation
As the saying goes, there is no shortage of gold. As a modern high-tech product and electrical equipment, computer brings more convenience, efficiency and joy to people's lives, but there are also some unfavorable factors that are harmful to human health.
Judging from the types of radiation, the hidden dangers of computers to human health mainly include electromagnetic radiation (various electromagnetic rays, electromagnetic waves, etc.). ), sound (noise), light (ultraviolet, infrared radiation and visible light, etc. ) and other radiation "pollution".
From the perspective of radiation sources, it includes CRT display radiation sources, chassis radiation sources and peripheral equipment radiation sources such as speakers, printers and photocopiers. Among them, the imaging principle of CRT (cathode ray tube) display determines that it is difficult to completely eliminate harmful radiation during its use. Because when it is working, its internal high-frequency electron gun, deflection coil, high-voltage bag and peripheral circuits will produce a variety of rays and electromagnetic waves, such as ionizing radiation (low-energy X-rays), non-ionizing radiation (low-frequency and high-frequency radiation), electrostatic field and optical radiation (including ultraviolet radiation, infrared radiation and visible light, etc.). ). The liquid crystal display uses the physical characteristics of liquid crystal, and its working principle is completely different from that of CRT display. It is a "healthy" display with no radiation (negligible) and environmental protection. Various components inside the chassis, including high-frequency and high-power CPU, various boards with a large number of transistors integrated in the main chip, CD-ROM drive, floppy drive, hard disk, several cooling fans inside the power supply, transformers, etc. When working, it will emit radiation and noise interference such as low-frequency electromagnetic waves. In addition, external speakers, photocopiers and other peripheral equipment radiation sources are also a "source" that cannot be ignored.
Judging from 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 will directly harm human reproductive system, nervous system and immune system, and it is the main inducement of cardiovascular disease, diabetes and cancer mutation, the inducement of abortion, infertility and teratogenesis of pregnant women, and it can directly affect the development of body tissues and bones of minors, leading to the decline of vision, memory and liver hematopoietic function, and even lead to retinal detachment in severe cases. In addition, electromagnetic radiation also brings hidden dangers to information security, which can be received and decoded by special signal receiving equipment, leading to information leakage and unnecessary losses. Excessive electromagnetic radiation will also interfere with other electronic devices around, affecting their normal work, resulting in electromagnetic compatibility (EMC) problems.
Therefore, electromagnetic radiation has been listed by the World Health Organization as the fourth largest environmental pollution source after water, atmosphere and noise, and has become an invisible "killer" that harms human health. Therefore, electromagnetic radiation protection is imperative.