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英国essay论文精选范文：“Electromagnetic radiation hazards and protection”，这篇论文讨论了电磁辐射的危害和防护。电磁辐射，是以电磁波的形式并以光速在空中传播能量的物理现象。由于电磁辐射对人体健康的影响程度与其所受到的辐射强度、积累的时间长短有关，现在还没有较大范围地直接反映出来，所以没有引起人们的重视。但对于电磁辐射的危害，我们决不可掉以轻心，应当提高对它的危害性的认识，采取积极的有针对性的防护措施，做到防患于未然。

Humans have been living in environments filled with electromagnetic radiation. These electromagnetic radiation is a kind of natural electromagnetic radiation, such as heat radiation, lightning, fire, the Sun's radiation and electromagnetic radiation from space. Since the protection of the Earth's thick atmosphere, these natural hazards of electromagnetic radiation on the human body and there is nothing amazing. And the other is from artificial electromagnetic radiation, such as radio and television transmission tower, microwave stations, mobile phones, power lines, televisions, microwave ovens and so on all kinds of electrical equipment, different wavelengths of radiation in their work and the frequency of the electromagnetic wave. With the rapid technology development and popularization of electronic information equipment, as well as a variety of appliances, which more and more artificial sources of electromagnetic radiation, have had varying degrees of "electromagnetic pollution".

Electromagnetic radiation is colorless and odorless, invisible without a trace, feel free, but can penetrate the animals, plants, and a variety of substances, including human, it's ubiquitous, to hospitals, has gradually become the air pollution, water pollution, and noise pollution after the fourth pollution, harm it mainly in the following three aspects. Due to the influence of electromagnetic radiation on human health and the radiation intensity, accumulated on the length of time, there is no directly reflected on a larger scale, not attracted considerable attention. So far, about the dangers of electromagnetic radiation on the human body have been a long time, many scholars at home and abroad with the consensus view, potentially dangerous electromagnetic radiation on the human body. Ultra strong electromagnetic radiation environment living too long, electromagnetic interference of human tissue molecules within the original electric field changes, various biomolecules that make up brain cells with a certain degree of damage or injury, produce too much harmful metabolites such as peroxides, even brain cells in DNA code malalignment, creating some of the physiological neurotransmitter. Humans if exposure exceeds a safe radiation dose, human cells is a large area of destruction or killing.

So many artificial sources of electromagnetic radiation, causing air electromagnetic environment is getting worse, forming various hindrances. The widespread use of radio communication equipment, electrical equipment, while accelerating the development of information industry on one hand and then led to a serious electromagnetic interference. These electromagnetic interference, the device is not working properly and even brought losses caused the accident. In fact, electromagnetic interference has posed a potential threat.

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Electromagnetic radiation has the potential to leak the secrets inside your computer. To the leakage of electromagnetic waves are: computers, power cable, cable connected to your computer, computer peripherals, and so on. They act the same as transmitting antenna. Power is a very important signal leakage channels, because it is connected to the public grid, thus as with cable Crosslinking computer signals transmitted.

Now State bodies, research institutions and academic organizations, enterprises and individuals in the use of computers, and most have access to computer networks, important also in danger potential leaks of confidential information.

In order to protect the electromagnetic environment, governance should be the source of harmful electromagnetic radiation sources. Ministry of health, the Ministry of electronics industry in the past, the State environmental protection administration, the army and other departments, have respectively the electromagnetic radiation safety standards in the industry, but no uniform compulsory standards for electromagnetic radiation security. It is reported that at present, China is in the process of electromagnetic radiation mandatory national standard, so that manufacturers can follow this standard research and development of ultra low electromagnetic radiation appliances, equipment, protect the safety of consumers. While the normal social environment management into the scope of protection of electromagnetic radiation, effectively protecting the legitimate rights and interests of consumers, workers.

Electromagnetic radiation hazards, we must be alert, blind, without fear, but should raise awareness of the dangers of it, and take proactive and targeted prevention measures, prepare.

Awareness and understanding of their own lives and works within the scope of the electromagnetic environment, avoid being on more than the security strength of electromagnetic radiation. Daily life may exceed the standard radiation safety radiation intensity regions are relatively easy to identify. As the range of 0.6 m behind the computer and the monitor, televisions, stereos, home appliances focus placed place, near large electrical equipment, radio and television transmitting antenna area, near high voltage power lines and equipment, and so on. All these possible sources of strong electromagnetic radiation should be avoided or avoid, not for a long time to stay in these "dangerous" area.

To learn more about the knowledge of electromagnetic radiation, Institute of preventive measures, and improve safety. If equipped with manual appliances should be strictly according to the instructions the instruction, keeping a safe distance, and so on. On the use of various electrical appliances should be kept a safe distance. Eye distance from the television screen, usually about 5 times the width of a TV screen; a microwave to leave after the opening of at least one metre away, pregnant women and children should be kept away from the oven; phone when using, you should try to make the head and mobile phone antenna some distance.

For staff working in a super dose of electromagnetic radiation, shielding measures should be taken, such as metal or metal-mesh shield or shielding radiation shielding for reduced radiation, or staff working in shielding room security areas. Staff members wear special anti-electromagnetic radiation shielding garments, shielding personal protective equipment such as helmets and shield glasses, can also effectively reduce the electromagnetic radiation damage, protect the health of workers.

In addition, should also pay attention to healthy diet and boosting the body's ability to resist electromagnetic radiation.

For electromagnetic interference, it is necessary to strengthen management and reduce harmful interference source of radiation, we also need to take technical measures to avoid mutual interference, improve communications, navigation and other applications of anti-interference ability of electromagnetic devices, and also to strengthen the electromagnetic environment monitoring and appropriate technical, administrative, and other research on preventive technical measures to prevent the harm of electromagnetic interference.

For preventing bring computer electromagnetic radiation leak, technically by magnetic shielding protection, encryption and other measures to guard against. Here, raise awareness of the use and management personnel to prevent leaks cannot be ignored.

At present, fully aware of the harm of electromagnetic radiation experts, scholars, engineers and technicians, radiation protection of medical workers and other minorities. Most people are still in the know little or completely ignorant State. Many people may want to go to when he was seriously hurt by electromagnetic radiation, only to wake up, even while others have compromised remains unknown. This is not alarmist, but no need to argue the facts. For example, a number of primary and secondary school students, college students addicted to video games and Internet cafes, and many of them have been this ghostly invisible electromagnetic radiation "gentle" killers got all shook up, trance, decreased Visual acuity, physical and mental damage, future setbacks, and some have even suffered heavy damage. But the victims did not know this one does have the hazards of electromagnetic radiation. Because our textbooks never mentioned, nor mentioned in the process of education, publicity department, also don't care much about the media. Many people do not know is also a potential risk.

Author think, must through broadcast, and TV, and newspaper, and learned groups, various media and organization widely to publicity electromagnetic radiation of against, universal protection electromagnetic radiation of common sense, to makes people set protection consciousness; we of physical education content in the, should in introduced electromagnetic waves of application zhihou joined "electromagnetic radiation of against and protection" of content, let we of students are set protection consciousness, to conducive to in application science and technology development economic construction of while do on electromagnetic radiation of protection.

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