Cell phone radiation on the body
February 9, 2007 1:21am CST
what will be the impact? How to be avoided?
• Saint Vincent And The Grenadines
11 Feb 07
As far as I know there is no confirmed evidence yet of the effects of cell phones on our body. However there have been studies of the effect of the heat they exude on our brains. That is why they recommend listening to the cell a bit separated from our head, not touching us. Anyway I am sure that within some years tehy will discover some bad effect on the use of Cell phones lol.
11 Feb 07
Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony throughout the world (as of August 2005, there were more than 2 billion users worldwide). This is because mobile phones use electromagnetic waves in the microwave range. These concerns have induced a large body of research (both epidemiological and experimental, in non-human animals as well as in humans). Concerns about effects on health have also been raised regarding other digital wireless systems, such as data communication networks. The World Health Organization has officially ruled out adverse health effects from cellular base stations and wireless data networks, and expects to make recommendations about mobile phones in 2007-08. However, some National Radiation Protection Authorities, i.e. Austria Germany and Sweden ,recommends their citizens to minimize radiation. Examples of recommendations are: Use hands-free to decrease the radiation to the head Keep the mobile phone away from the body. Do not telephone in a car without an external antenna. Part of the radio waves emitted by a mobile telephone handset are absorbed by the human head; the radio waves emitted by a GSM handset, for example, can have a peak power of up to 2 watts, and an analog phone in the USA (probably very few in use today) can have 3.6 watts, as in the old large mobile phone units installed in cars. Other digital mobile technologies, such as CDMA and TDMA, have today lower rates, under 1 watt. The average radiation rate of cellphones in some countries is regulated and it is mandatory to inform the consumers about it (usually printed in the battery compartment). In most systems the cellphone and the base station check reception quality and signal strength and the power level is increased or decreased automatically, within the above limits, such as inside buildings or vehicles, etc. The rate at which radiation is absorbed by the human body is measured by the Specific Absorption Rate (SAR), and its maximum levels for modern handsets have been set by governmental regulating agencies in many countries. In the USA, the FCC has set a SAR limit of 1.6 W/kg, averaged over a volume of 1 gram of tissue, for the head. In Europe, the limit is 2 W/kg, averaged over a volume of 10 grams of tissue. SAR values are heavily dependent on the size of the averaging volume. Without information about the averaging volume used comparisons between different measurements can not be made. In general, the European 10-gram ratings should be compared among themselves, and the American 1-gram ratings should be compared among themselves.