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8. What has the FDA
done to measure the
radiofrequency energy
coming from wireless
phones?
The Institute of Electrical
and Electronic Engineers
(IEEE) is developing
a technical standard
for measuring the
radiofrequency energy
(RF) exposure from
wireless phones and other
wireless handsets with the
participation and leadership
of FDA scientists and
engineers. The standard,
‘Recommended Practice for
Determining the Spatial-
Peak Specifi c Absorption
Rate (SAR) in the Human
Body Due to Wireless
Communications Devices:
Experimental Techniques,’
sets forth the fi rst consistent
test methodology for
measuring the rate at which
RF is deposited in the
heads of wireless phone
users. The test method
uses a tissuesimulating
model of the human
head. Standardized
SAR test methodology
is expected to greatly
improve the consistency
of measurements made at
different laboratories on the
same phone. SAR is the
measurement of the amount
of energy absorbed in
tissue, either by the whole
body or a small part of
the body. It is measured in
watts/kg (or milliwatts/g) of
matter. This measurement is
used to determine whether
a wireless phone complies
with safety guidelines.
Guidelines for safe and effi cient use