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Safety Guidelines
111
scientists and engineers. The standard,
‘Recommended Practice for Determining
the Spatial- Peak Specific Absorption Rate
(SAR) in the Human Body Due to Wireless
Communications Devices: Experimental
Techniques,’ sets forth the first consistent
test methodology for measuring the rate
at which RF is deposited in the heads of
wireless phone users. The test method
uses a tissue-simulating 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.
9. What steps can I take to reduce my
exposure to radiofrequency energy
from my wireless phone?
If there is a risk from these products
- and at this point we do not know that
there is - it is probably very small. But if
you are concerned about avoiding even
potential risks, you can take a few simple
steps to minimize your exposure to radio
frequency(RF) energy. Since time is a key
factor in how much exposure a person
receives, reducing the amount of time
spent using a wireless phone will reduce
RF exposure. If you must conduct extended
conversations by wireless phone every day,
you could place more distance between
your body and the source of the RF, since
the exposure level drops off dramatically
with distance. For example, you could use a
headset and carry the wireless phone away
from your body or use a wireless phone
connected to a remote antenna. Again,
the scientific data do not demonstrate that
wireless phones are harmful. But if you
are concerned about the RF exposure from
these products, you can use measures like
those described above to reduce your RF
exposure from wireless phone use.
10. What about children using wireless
phones?
The scientific evidence does not show
a danger to users of wireless phones,
including children and teenagers. If you
want to take steps to lower exposure to
radio frequency(RF) energy, the measures