Smartphones have become indispensable daily gadgets, with the user always taking his smart phone wherever he goes. Many people forget that these mobile devices emit radiation. Are these radiation harmful to health?
"When a user makes a lot of phone calls, he is exposed to a large amount of electromagnetic radiation," Stephan Vinnobal of the German Inside-Handi.de said.
The Federal Office for Radiation Protection said that mobile telephony uses high-frequency electromagnetic fields for voice and data transmission. When a user makes telephone calls by mobile phone, part of the power of these bands is absorbed into the head.
SAR rates
The German expert Vinnobal that the radiation arises especially when transmitting signals between the mobile phone and the base station for mobile telephone, SAR rates here is a signal of the amount of electromagnetic radiation, which is issued by the mobile phone, and measure the amount of energy absorption in the unit of watts per kilogram (W / kg).
The absorption rates determined in the end indicate the intensity of heat generated by absorption of radiation in tissue, as in microwave ovens. In this type of oven, food is targeted only by more concentrated radiation, and therefore the temperature is much higher.
"There is still no clear evidence of whether radiation has negative health effects, and there is a suspicion that radiation may be a cause of cancer or infertility," Vinnobal said. "There are studies that regularly show radiation risk or confirm its safety."
Limit values
Radiation is safe and harmless within its limits, where the SAR value of the mobile phone may not exceed 2 W / kg. The Federal Radiation Protection Office confirmed that all mobile phones available in the market are clearly below SAR values. For example, the Samsung Galaxy S8 has a SAR value of 0.38 watts / kilogram, the Huawei B10 phone is 0.96 watts / kg and the iPhone 7 is Apple is worth 1.38 watts / kilogram, and operators often have lists of SAR values, even if they are somewhat hidden.
Half truth
Conect reports that SAR values represent only half of the truth. The German magazine said in one test that effective transmission efficiency is also an important factor, which works on the availability of communication, is not absorbed in the head, or is lost by Badly designed mobile phone.
If the mobile phone indicates poor transmission characteristics, the mobile telephone network moves to a higher level of efficiency and thus produces a stronger radiation. Therefore, the German magazine has developed its own radiation factor to conduct the assessment in a more realistic manner, which calculates the SAR value and the transmission efficiency.
However, the user can reduce exposure to radiation. People who use the smartphone often use handsfree equipment to keep the phone away from the head. In addition to the earphones, which are connected to the phone by cable, there are currently Bluetooth headsets, which have a lower radiation rate than mobile phones, and the values of the specific absorption rates range between 0,003-0.3 watts / kg.
However, smart phones ready to receive radiation also, so it is better to carry smart phones in a bag away from the head, and when using the alarm function in the smartphone, the device should not be placed next to the bed directly to the head.
Protection Tips
For example, the Federal Radiation Protection Office uses the fixed line when there is a chance to choose between mobile and fixed line, make sure that mobile calls are as short as possible and avoid using smart phones when reception is bad. Higher, and therefore produces stronger radiation.
Children are usually more sensitive to radiation from mobile phones, so experts advise restricting the use of smartphones in children as much as possible, where mobile data communications can be disabled so that the child's phone is available for phone calls and enjoys offline games while on the go.
"When a user makes a lot of phone calls, he is exposed to a large amount of electromagnetic radiation," Stephan Vinnobal of the German Inside-Handi.de said.
The Federal Office for Radiation Protection said that mobile telephony uses high-frequency electromagnetic fields for voice and data transmission. When a user makes telephone calls by mobile phone, part of the power of these bands is absorbed into the head.
SAR rates
The German expert Vinnobal that the radiation arises especially when transmitting signals between the mobile phone and the base station for mobile telephone, SAR rates here is a signal of the amount of electromagnetic radiation, which is issued by the mobile phone, and measure the amount of energy absorption in the unit of watts per kilogram (W / kg).
The absorption rates determined in the end indicate the intensity of heat generated by absorption of radiation in tissue, as in microwave ovens. In this type of oven, food is targeted only by more concentrated radiation, and therefore the temperature is much higher.
"There is still no clear evidence of whether radiation has negative health effects, and there is a suspicion that radiation may be a cause of cancer or infertility," Vinnobal said. "There are studies that regularly show radiation risk or confirm its safety."
Limit values
Radiation is safe and harmless within its limits, where the SAR value of the mobile phone may not exceed 2 W / kg. The Federal Radiation Protection Office confirmed that all mobile phones available in the market are clearly below SAR values. For example, the Samsung Galaxy S8 has a SAR value of 0.38 watts / kilogram, the Huawei B10 phone is 0.96 watts / kg and the iPhone 7 is Apple is worth 1.38 watts / kilogram, and operators often have lists of SAR values, even if they are somewhat hidden.
Half truth
Conect reports that SAR values represent only half of the truth. The German magazine said in one test that effective transmission efficiency is also an important factor, which works on the availability of communication, is not absorbed in the head, or is lost by Badly designed mobile phone.
If the mobile phone indicates poor transmission characteristics, the mobile telephone network moves to a higher level of efficiency and thus produces a stronger radiation. Therefore, the German magazine has developed its own radiation factor to conduct the assessment in a more realistic manner, which calculates the SAR value and the transmission efficiency.
However, the user can reduce exposure to radiation. People who use the smartphone often use handsfree equipment to keep the phone away from the head. In addition to the earphones, which are connected to the phone by cable, there are currently Bluetooth headsets, which have a lower radiation rate than mobile phones, and the values of the specific absorption rates range between 0,003-0.3 watts / kg.
However, smart phones ready to receive radiation also, so it is better to carry smart phones in a bag away from the head, and when using the alarm function in the smartphone, the device should not be placed next to the bed directly to the head.
Protection Tips
For example, the Federal Radiation Protection Office uses the fixed line when there is a chance to choose between mobile and fixed line, make sure that mobile calls are as short as possible and avoid using smart phones when reception is bad. Higher, and therefore produces stronger radiation.
Children are usually more sensitive to radiation from mobile phones, so experts advise restricting the use of smartphones in children as much as possible, where mobile data communications can be disabled so that the child's phone is available for phone calls and enjoys offline games while on the go.
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