Problem with SAR values
by topazg - 5/24/05 8:26 AM
In Reply to: I agree ... by vince7
Firstly, I want to say that I agree completely, these values should be completely open and easily accessible on all such reviews. However, regarding SARs, there are two important points that need to be considered:
a) SAR is actually a value of peak specific absorption rate, and phones are actually capable of operating at power levels 1000-fold lower in very good signal. However, some phones are far more efficient at doing this than other phones, and as such the efficiency of phones operating at lower than peak power normally has a larger bearing on RF exposure than the actual SAR value of the phone.
b) Sar values can be measured over either 10g or 1g of tissue. The mass of tissue over which the absorption is measured is absolutely key. If it is measured over a larger mass any "hotspots", or smaller areas of tissue were absorption is considerably greater, are averaged out over a much larger area. As we do not yet know whether adverse health effects are going to be proportionally affected by local absorption levels, this may be extremely significant and make large area calculations very inaccurate - truth is we just don't know yet.
SAR values are a good rule of thumb but no more unfortunately.
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