About the dangers of cell phones



    Disputes regarding the effects of cellular communications on human health do not subside. Research is constantly being conducted in the world, the purpose of which is to at least somehow clarify the situation and empirically prove whether there is a harmful effect on the human body.
    Let's try to take an objective look at the problem.

    Sar

    In order to somehow evaluate the value of the radiation of a cellular device on the human body, the indicator "Specific absorption coefficient of electromagnetic energy" - SAR was invented.
    SAR is a measure of the speed at which RF energy is absorbed by body tissues, measured in W / kg.
    It is worth noting that the SAR values ​​indicated in the instructions for cell phones imply that the transmitter operates at full power, for example, when you are in an area of ​​insecure reception.



    Scientists conducted a number of studies that did not find evidence of the direct effects of mobile phone radiation on human tissue, leading to the destruction of DNA molecules or tissue ionization.
    However, since the human body consists of 70% water, and water molecules are able to "absorb" the radiation energy in the high-frequency range and turn it into heat energy, the attention of the studies was concentrated on this fact.

    It was experimentally proven that in the process of life, the temperature of brain tissue can vary up to 1 degree Celsius, without any consequences. Increased by a large amount, can affect health.



    The SAR coefficient was calculated based on these indicators. In Europe, a safe level of 2 W / kg for the head and 4 W / kg for other parts of the body is recognized. With this indicator, the temperature in the tissues increases by no more than 0.3 degrees Celsius, which does not harm the body. Nevertheless, already at 0.3 degrees, the destruction of protein chains was found, but scientists do not connect this fact and the impact on health.
    For the United States, SAR is 1.6 W / kg.



    For comparison, the SAR values ​​are shown, which can cause negative consequences.

    And how are we

    In Russia, safe radiation standards are regulated by the regulation of Sanitary Regulation and Norms . Allowable radiation is measured in W / cm2 and is 10 μW / cm2. The SAR value cannot be transformed into Russian standards, this is done by laboratory means.
    Experts admit that in the Russian Federation there are even more stringent requirements for radiation standards than in Europe and the USA.

    STUK

    In Finland, there is the CENTER for Radiation and Nuclear Safety (STUK), which, inter alia, is engaged in the study of mobile phone emissions and their effects on humans.
    Every year, the CENTER tests 15 arbitrary models of phones for their compliance with standards.







    The essence of research is as follows. The shape of the human body is filled with a substance close to human tissues in its parameters. The phone, at maximum radiation power, is positioned near the “head” of the form. The robot's hand describes a certain trajectory, with a change in the position of the phone and at different frequencies. Radiation results are converted to SAR values ​​and stored. Measurements are taken separately for the head and separately for the rest of the body.

    Here's how it looks in the video.

    Detailed research results for different phone brands can be found on the center's website .
    Similar research centers exist also in other countries of Europe and America.

    In conclusion

    It is worth noting that the temperature effect greatly depends on the position of the phone relative to the head, the biological parameters of the body and age.
    Conducted research on the possible interaction of radiation from mobile phones and the growth of cancer did not come to an unambiguous conclusion. Since the active use of cell phones lasts about 10 years, it will take much longer to reach a final conclusion.

    In addition, it is not entirely correct to draw conclusions only on the basis of heat exposure, because the effects of RF radiation on the moral and psychological component and other health components have not been fully studied.

    In any case, indirect harm to health is scientifically proven. As a result of the experiments, it was found that the radiation of a cell phone initiates interference in the operation of pacemakers, which can lead to negative consequences.

    As a recommendation, it should be recalled that the radiation power decreases in inverse proportion to the square of the distance, that is, when the distance is increased by a factor of 2, the exposure decreases by a factor of 4. Centers investigating the problems recommend, without the need not to keep the phone close to the body and, if possible, use wired headsets.
    Whether or not to use such recommendations, everyone will decide for himself.

    PS: Interesting results in the study of the problem can be found here and here.

    Also popular now: