Question 1: How to interpret the results of the experiment?
Anti-radiation clothing in the end there is no use, the most scientific answer, of course, is to take the experimental data to speak.
At the beginning of the popularity of radiation protection clothing, it is by virtue of an extremely simple experiment spread. It is said that as long as when the radiation suit wrapped around the phone, cell phone signals and radiation will be shielded, the phone will not be able to dial out and answer the phone. Many people apply this simple experiment after purchasing anti-radiation clothing, the utility of anti-radiation, trust is born.
In recent years, anti-radiation clothing has become a lot of Chinese pregnant women's "standard configuration", and many women insist on wearing anti-radiation clothing from the preparation of pregnancy until the birth.
The reporter casually purchased from the market an ordinary price of anti-radiation clothing in the experiment, the cell phone in its package, really lost the signal. For this once popular experiment, an expert revealed that this test is not scientific. According to it, a metal plate on the electromagnetic wave does have a shielding effect, but a layer of metal mesh clothes, simply do not shield the cell phone electromagnetic wave. In addition, the cell phone has two bands, one is 900 megabits, one is 1800 megabits, even if the shielding can be 900 megabits, but also can not shield 1800 megabits.
So, pregnant women's radiation clothing in the end there is no use? China Electromagnetic Compatibility Committee chairman, Beijing University of Posts and Telecommunications doctoral supervisor Professor Gao Yougang said in an interview with reporters, in the absence of scientific experiments before, it is not good to generalize. He told the reporter that the Institute of Aerospace Medical Engineering had also developed anti-radiation clothing and gifted him a set. "It's the kind that wraps the whole person in."
Just as people have been skeptical about the real public of radiation protection, in the CCTV "truth survey" news, an electronic testing laboratory engineer Chen Feng, to test the effectiveness of radiation-proof clothing shielding radiation, did two experiments. The first experiment, test radiation clothing on a single source of radiation shielding effect, the results show that the metal fiber radiation clothing can block about 90% of the radiation. Another experiment is a simulation of real-life radiation environment, that is, the source of radiation is not a single, but from all directions, the radiation suit set on a wooden board support to simulate the human body wearing. The results found that the role of the "human body" of the intensity of radiation, but increased.
For the results of this experiment, Chen Feng that electromagnetic radiation will be through the gap in the clothes into the back of the radiation suit, due to the radiation suit blocking, these radiation can not be reflected out of the radiation suit in a number of reflections will be superimposed on the meeting, but lead to the role of the human body to increase the intensity of radiation.
After the news came to light, radiation protection manufacturers, as well as industry and medical experts questioned the environment and conclusions of the experiment.
Question 2: Is the radiation intensity smaller or larger?
Li Guodong, a senior engineer at the Shanghai Testing Center under the Shanghai Research Institute of Measurement and Testing Technology, said publicly in a media interview that the testing methodology of the lab hired by CCTV was unscientific. The testing environment for this experiment was problematic, so the results are pending.
Professor Gao Yougang said the experiment proved that radiation-protective clothing still has some utility against a single source of radiation, and that a more rigorous experimental environment is needed to set up the second experiment. "For the moment, it's hard to say whether radiation protective clothing is useful or not, and it needs to be set up in a rigorous scientific experiment, otherwise."
Of course, see this news report, the most difficult or pregnant women and their families. Thousands of dollars to buy radiation protection clothing, even if the "radiation intensity increased"? For this claim, Lu Hankui, director of nuclear medicine at Shanghai Sixth People's Hospital, gave a negative
answer. "In real life wearing radiation protection clothing, it is impossible to make the radiation increase." Lu Hankui said some experts have suggested that radiation protection must be fully enclosed to still be effective, a claim he believes is unrealistic.
Subsequently, he gave an example of radiation protective clothing worn by radiologists: medical radiation protective clothing is open, sleeveless undershirt coats, within the clothes, embedded with soft lead blocks, depending on the size of the clothes varies, the thickness of these lead blocks in two or three millimeters ranging from the weight of roughly 2.5 kilograms or so. "Radiation in medical radiation therapy places, to be much greater than people's general living environment. And we doctors are all healthy and the next generation is all well under the protection of medical radiation suits. Of course pregnant women must stay away from the warning area, away from high radiation areas."
Question 3: pregnant women radiation protection clothing to wear or not to wear?
So, pregnant women need to wear radiation protection clothing during pregnancy? Life in the electromagnetic radiation on pregnant women really have so much impact? Prof. Gao Yougang said, once a scientist from a high welfare country published a paper suggesting that women should work or rest at home after pregnancy. Electromagnetic radiation in the workplace has the potential to jeopardize the health of pregnant women.
Gao Yougang said that in the home, the current LCD radiation, compared with the original color TV, radiation is much smaller, do not need special protection. However, he also at the same time for the harm of pregnant women's radiation sources to give their own advice: "Pregnant women are best away from the kitchen, microwave ovens and induction cookers in the use of radiation is quite large, to be very careful." Relevant experiments have proved that the radiation of the microwave oven is almost all home appliances in the radiation is the most powerful, especially just started when the radiation is the strongest. The greatest intensity of radiation is the door of the microwave oven, microwaves are most likely to leak from the door.
The reporter learned that the rise of anti-radiation clothing, from ten years ago, people for the low amplitude electromagnetic may lead to fetal deformities of the panic. China's anti-radiation clothing industry therefore rose. But in fact, about the low-frequency electromagnetic fields may cause malformation, the current academic community still has no unanimous conclusion. In the United States and Europe, most pregnant women are not as popular as Chinese pregnant women to wear anti-radiation clothing, but there are a very small number of pregnant women will acquire radiation protection clothing.
Lu Hankui told reporters that when his lover was pregnant, he and the ordinary people, as well as with the tide also bought a radiation suit. Before using it, he took an electromagnetic radiation measuring instrument in real life. "The data of the measuring instrument reality, the data of electromagnetic radiation is down, is the formation of a protective layer."
And for anti-radiation clothing, pregnant women need to wear the problem, Lu Han Kui said, in fact, wear or not, are not a problem. "As long as pregnant women are away from places of high radiation, less use of cell phones and computers, regular life, there is no need to wear radiation protection clothing." He said that more than the protection of the outside world, it is more important to have a good lifestyle and a healthy living environment, a better state of mind, do not fear and panic, and go with the flow to meet the new life.
Opinion
Experts say: wear is certainly a little useful
As the national standard has not yet been introduced, the current laboratory testing can not yet be used as a basis for determining the quality of anti-radiation clothing is qualified, but only with reference to the "Protective Clothing - Microwave Radiation Protective Clothing" standard issued in 2009. Labor hygienist, Shanghai Medical University Professor Wang Yilan told reporters that although the outside world for the exact utility of radiation protection has a lot to say, but she suggested that pregnant women, there is no need to panic, "radiation is certainly not doubled. Want to wear on wear, if the family bought, wear is certainly a little use." Prof. Wang Yilan told reporters that earlier she specifically read some information about anti-radiation clothing, she personally believe that it still has some efficacy.
In order to further investigate the radiation suit really work? I bought a high-end brand Italy JoynCleon (Jing Qi) radiation clothing, sent to the Provincial Product Quality Inspection Research Institute testing, by the Electronic Products Inspection Department Engineer Wang Lin experiments show that in the radiation experiment, no Jing Qi radiation clothing coverage, the intensity of radiation detected than the coverage of the case is indeed nearly twice as high. That is to say, radiation protection clothing in blocking radiation does play an outstanding role. But Wang Lin still gave some reminders: due to the clothing in the actual use of the process can not be fully closed, especially the bottom of the clothing is in fact open, coupled with the life of the radiation source is usually located in the clothing outside, and more decentralized, so the effect of radiation protection may also be affected. At the same time, different brands of radiation protection clothing due to differences in technological quality of this data may also be different. So the reporter put on the market from a star endorsement of a famous brand of radiation clothing, do the same test, 5 minutes after the results of the experiment came out, a famous brand of radiation clothing without coverage than the coverage of the radiation intensity detected only 40% higher, the effect is greatly discounted. Overall, the role of radiation protection clothing is still there.