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For Your Safety 139
consistency of measurements made at different laboratories on the same
device. 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 device complies with safety guidelines.
9. What steps can I take to reduce my exposure to Radio
Frequency energy from my wireless device?
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 device will reduce RF exposure. If you must conduct extended
conversations by wireless device 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 device away from your body or use a wireless device connected
to a remote antenna. Again, the scientific data does not demonstrate that
wireless devices 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 device use.
10. What about children using wireless devices?
The scientific evidence does not show a danger to users of wireless devices,
including children and teenagers. If you want to take steps to lower exposure
to Radio Frequency (RF) energy, the measures described above would apply
to children and teenagers using wireless devices. Reducing the time of
wireless device use and increasing the distance between the user and the RF
source will reduce RF exposure. Some groups sponsored by other national
governments have advised that children be discouraged from using wireless
devices at all. For example, the government in the United Kingdom distributed
leaflets containing such a recommendation in December 2000.
They noted that no evidence exists that using a wireless device causes brain
tumors or other ill effects. Their recommendation to limit wireless device use
by children was strictly precautionary; it was not based on scientific evidence
that any health hazard exists.
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