Mobile phones radiate, so walkie-talkies, PHS and CDMA mobile phones all have the same characteristics and uses. Do they all have radiation? Why?

The harm of mobile phone radiation to human health is a serious social problem and will not disappear because of the deliberate concealment and avoidance of the mobile phone industry.

At present, the world has begun to pay attention to the radiation problem of mobile phones, and has repeatedly "considered" the technical standards related to radiation. Unfortunately, compared with the global popularity of mobile phones and the health of consumers, this slow "consideration" is too late, and we have reason to believe that this procrastination will continue to exist in many countries. Therefore, what is sad is not the lack of technical standards for mobile phone radiation, but the lack of mechanisms to deal with this impact on public safety interests.

The era of globalization is an era in which multinational corporations dominate the global economy. The influence of large companies goes far beyond the economic category, and they have become a power system that affects the operation of society. For the problem of mobile phone radiation, large companies have actually violated the public's rights by avoiding industry privacy.

Social public health should be regarded as a public product. For example, when many enterprises pollute the air, the guardian of this public product should be the government.

Mobile phone radiation has the same harm to public health. We can't avoid the existence of radiation because we can't see it. Because the development of society cannot be completely equal to the development of company groups, but the development of the whole people. On the issue of mobile phone radiation, governments have the responsibility to speed up the research on radiation and provide symmetrical radiation information to the public; It is more responsible to set strict standards for enterprises, let enterprises bear more responsibilities to the people, and establish a double-layer responsibility of serving the society and making profits. Therefore, the radiation of mobile phones is not terrible. What is terrible is that the international community has not established a rapid coordination mechanism to avoid similar problems.

Modern civilization not only brings people rich products and services, but also makes people fall into "happiness troubles": with the increasing frequency of mobile phone use, the health and safety problems brought by mobile phone radiation have become the focus of attention in the industry.

What is cell phone radiation?

Research shows that when people use mobile phones, they will send radio waves to the transmitting base station, and any kind of radio waves will be absorbed by the human body more or less, thus changing human tissues and possibly affecting human health. These radio waves are called cell phone radiation.

In fact, it is more reasonable to call mobile phone radiation, because the frequency used by mobile phones is between 800- 1800 MHz, which is completely different from ionizing radiation such as X-rays or gamma rays. It cannot produce ionization or radiation energy in human body, so it is called non-ionizing radiation field.

The radiation of mobile phones has a set of relatively complete measurement standards in the international scientific community, which is called SAR value. SAR is the abbreviation of Specific Absorption Rate, that is, specific absorption rate, also known as the test value of electromagnetic radiation. In layman's terms, it is the size of the impact of mobile phone radiation on the human body.

1990, the international institute of electrical and electronics engineers (IEEE) formulated the technical standard for measuring electromagnetic radiation of mobile phones. 1998 The International Commission on Non-ionizing Radiation Protection (ICNIRP) has also formulated similar technical standards, in which SAR is used to measure the electromagnetic radiation of mobile phones.

ICNIRP standard is recommended by ITU and WHO and supported by most countries. In China, the Joint Working Group on the Formulation of National Standards for Electromagnetic Radiation, led by AQSIQ and composed of the Ministry of Health, the State Environmental Protection Administration, the Ministry of Information Industry, the State Administration of Radio, Film and Television, and the State Grid Corporation, is jointly formulating China's electromagnetic radiation protection standards, among which SAR is also used as the basic limit for measuring mobile phone radiation.

Cell phone radiation is more terrible than expected.

With the rapid increase of the number of mobile phones, people begin to pay more and more attention to the health and safety problems that may be caused by mobile phone radiation. However, at present, most mobile phone users do not have a comprehensive understanding of mobile phone radiation. More and more scientific research shows that the harm caused by mobile phone radiation is far more terrible than imagined.

Although there is still controversy about mobile phone radiation in academic circles, it is undeniable that it will cause harm to human body under certain conditions.

A study organized by Professor Sebastian, director of the Department of Applied Physics at Compton University in Madrid, shows that the data obtained by the existing methods obviously underestimate the influence of radiation on human tissues. Sebastian said: "Because the intensity of the electromagnetic field is greater than expected, the impact on health will be correspondingly greater. We estimate that the harm of electromagnetic radiation will continue to accumulate. After 10 to 15 years, there are likely to be more cases of diseases caused by using mobile phones. "

Dr. Gunhild Overtdel of Norwegian University of Science and Technology and his colleagues conducted a questionnaire survey among 65,438+200,000 Swedes and 5,000 Norwegians, all of whom used mobile phones at work. As a result, 7803 people in Sweden answered and 2828 people in Norway answered. Among the people surveyed in Norway, 3 1% suffer from at least one disease, while among Swedes, 13% suffer from one or more diseases. The research report also shows that headaches are most likely to occur within half an hour after the phone call, and sometimes occur during the phone call. Many Norwegians say that when the phone call lasts more than five minutes, the pain will occur. Many Swedes also said that talking on the phone for more than 5 minutes will cause symptoms.

In China, some researchers also warned about the radiation from mobile phones. Xie, a professor of physics at Jiamusi University, believes that the current controversy about mobile phone radiation is actually a quantitative discussion, not an existing problem. Xie analyzed that the harm of mobile phone radiation to human body can be understood from the well-known law of conservation of energy. Mobile phones mainly radiate microwaves through antennas. The essence of this radiation is the transmission of energy. These microwave energies have strong penetrating power. When they enter human organs, according to the law of conservation of energy, they will not perish. They transfer this energy to human organs and convert it into other forms of energy, that is, they produce thermal effects and non-thermal effects.

Xie believes that because the antenna is close to the head when the mobile phone is used, the microwave emitted is very concentrated, so long-term use of the mobile phone will definitely cause local lesions.

Scientifically treat mobile phone radiation

In recent years, researchers have been trying to find out whether mobile phone radiation will affect human health, but the research results are difficult to be recognized by all scientific circles. At the same time, the research results of mobile phone radiation are not the same. In this regard, Russian experts pointed out that this is caused by different research methods.

Experts from Moscow Medical College wrote in the Russian magazine Chemistry and Life that there are three reasons for these differences: First, many scientific research groups use different research methods, so researchers cannot compare the data obtained by these groups; Second, the short observation period is another deficiency of this kind of research. Some diseases suspected to be related to mobile phones have a long development process, but it is difficult to determine the relationship between some early diseases and mobile phones by existing methods. Third, some research activities may be influenced by investors.

Although there is no accurate conclusion about the harm of mobile phone radiation in the industry, experts suggest that it is best not to wait until the harm of mobile phone radiation is completely determined before taking preventive measures. Stewart, chairman of the National Radiation Protection and Safety Committee of the United Kingdom, once warned that regarding mobile phone technology, our Committee is very concerned about its impact on public health. Although the mobile phone has become a part of daily life and even a fashion ornament for some people, it does not mean that people are safe to use it. Ms. Marin, the head of the German Consumers Association, believes that the most important thing at present is to give consumers a control standard on mobile phone radiation.

Mobile phone is a new communication tool commonly used in modern people's life and work. With the development of science and technology and the improvement of living standards, the status of mobile phones is becoming more and more important and popular. Therefore, all countries in the world pay special attention to the increasingly serious problem of mobile phone radiation and have formulated relevant laws and regulations to control the radiation environment of mobile phones. Scientists and researchers all over the world are also actively exploring the harm of mobile phones to human health and taking corresponding measures to eliminate this influence. Take Germany as an example. As early as July, 20001year, the German Minister of the Environment said that the German government would strengthen the management of radiation generated by mobile communication, and required mobile phone manufacturers to accurately indicate the radiation level in the mobile phone instruction manual from the autumn of that year.

Some mobile phone manufacturers are also very concerned about the radiation of mobile phones. Micheal Ning, the public relations director of Sony Ericsson (China), said that as a representative of high-end mobile phones, Sony Ericsson's mobile phone products have always implemented strict mobile phone radiation standards. All Sony Ericsson mobile phone product manuals and product websites are marked with radiation values. In addition, Micheal Ning also revealed that Sony Ericsson has extracted a green substance from some vegetables for mobile phone manufacturing, and is currently testing it. Haier, which has always been good at solving user problems, once again brought surprises to everyone. It is understood that some models of Haier's mobile phones have successfully passed the SAR value test of mobile phones in the Certification Center of the State Environmental Protection Administration (CEC), and the first batch has obtained Class II environmental label certification, effectively reducing the radiation value and ensuring the health of consumers.

Of course, many products are potentially dangerous to people. Under the background that high technology is rapidly changing human life style, it is not surprising to ask whether the radiation of mobile phones will affect human health. The key to the problem is to solve technical problems with a scientific attitude, which should be the rational thinking of human beings to correctly treat the radiation of mobile phones. In other words, human beings can neither give up civilization because of possible harm, nor ignore civilization; Instead, we should pay due attention to various processes such as research and development, use and management.