Motorola V60C - Инструкция по эксплуатации - Страница 151

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What kinds of phones are in question?

Questions have been raised about hand-held mobile phones, the 
kind that have a built-in antenna that is positioned close to the 
user's head during normal telephone conversation. These types 
of mobile phones are of concern because of the short distance 
between the phone's antenna—the primary source of the RF—
and the person's head. The exposure to RF from mobile phones 
in which the antenna is located at greater distances from the 
user (on the outside of a car, for example) is drastically lower 
than that from hand-held phones, because a person's RF 
exposure decreases rapidly with distance from the source. The 
safety of so-called “cordless phones,” which have a base unit 
connected to the telephone wiring in a house and which operate 
at far lower power levels and frequencies, has not been 
questioned.

How much evidence is there that hand-held mobile 
phones might be harmful?

Briefly, there is not enough evidence to know for sure, either 
way; however, research efforts are on-going. The existing 
scientific evidence is conflicting and many of the studies that 
have been done to date have suffered from flaws in their 
research methods. Animal experiments investigating the effects 
of RF exposures characteristic of mobile phones have yielded 
conflicting results. A few animal studies, however, have 
suggested that low levels of RF could accelerate the 
development of cancer in laboratory animals. In one study, mice 
genetically altered to be predisposed to developing one type of 
cancer developed more than twice as many such cancers when 
they were exposed to RF energy compared to controls. There is 
much uncertainty among scientists about whether results