>I recently had a discussion with a major electronics guru for a local
>television station. We were talking about microwave transmitters (radar
>speed guns, garage door openers, that sort of thing), when he made a dramatic
>statement that shocked me: he claimed that cellular phones were extremely
>hazardous and probably highly carcinogenic.
>He claimed that the frequency wavelengths used for cellular phone radio
>transmissions were just about equal to the diameter of the human brain cavity.
>This, he claimed, accelerated by the fact that the receiver is always held up
>against the human skull, sets up highly dangerous conditions within the human
Quote:>His co-workers seemed to share his
>opinions; one of their technicians was severely injured some years back by
>climbing on a transmission tower during a high-intensity transmission.
>Is this nonsense, an urban myth, or is this actually a matter of risk?
Getting out my handy dandy $2 calculator, I plug in the speed of light
and divide it by the frequency emmited by cellular phones (Approx 800-
900 Mhz) and get the wavelegth of about 30 to 38 cm (about a foot).
Now assuming that we set up some kind of reflector to set up standing waves
we get about 6 inches. How close this is to the size of the brain cavity
is unknown to me, but what I do know is that the bone in the skull is NOT
a very good reflector of Electromagnetic waves in that part of the spectrum.
If it was, then microwave ovens would have a difficult time cooking
meats with bones in them since everything within 1/2 wavelength of the bones
would be un-cooked. I have taken a few liberties here with my example
as far as the frequency of microwaves compared to UHF waves, but for this
example I think it is close enough.
Now, as for getting injured by climbing a transmission tower. Well,
personally I would never get too close to a light source being powered
in the 70,000 watt (or greater) range and the same goes for Electromagnetic
Transmission equipment. Most cellular phones operate in the 4-20 watt
range, the low end being the very portable hand-held units.
As for being frightened of Cellular Phones. Not me.
"Hey ! Whats with all the blue lines on the RGB Monitor ???"