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Specific absorption rate



Specific absorption rate (SAR) is a measure of the rate at which radio frequency (RF) energy is absorbed by the body when exposed to radio-frequency electromagnetic field. The most common use is in relation to mobile phones. Various governments have defined safety limits for exposure to RF energy produced by mobile devices:

  • United States: the FCC requires that phones sold have a SAR level at or below 1.6 watts per kilogram (W/kg) taken over a volume of 1 gram of tissue.
  • European Union: the SAR limit is 2 W/kg, averaged over ten grams of tissue.

See also

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Specific_absorption_rate". A list of authors is available in Wikipedia.
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