User manual

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would be needed to provide reliable proof of a cancer-promoting effect, if one exists.
Epidemiological studies can provide data that is directly applicable to human
populations, but ten or more years of follow-up research may be needed to provide
answers about certain health effects, such as cancer. This is due to the interval
between exposure time to a cancer-causing agent and the rate for which tumors
develop - if they do. This could take several years into the future. The interpretation
of epidemiological studies is hampered by difficulties in measuring actual RF
exposure during day-to-day use of wireless phones. Many factors affect this
measurement, such as the angle at which the phone is held, or which model of phone
is used.
7. What has the FDA done to measure the Radio Frequency energy coming from
wireless phones?
The Institute of Electrical and Electronic Engineers (IEEE) is developing a technical
standard for measuring the Radio Frequency (RF) energy 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 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 mill-watts/g) of