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"Mike Coslo" wrote in message
... Dr. Barry L. Ornitz wrote: The ONLY effect that radio frequencies can do to humans is thermal. You have to increase the frequencies to the upper visible region (blue since we are talking frequency rather than wavelength) before there is any ionizing radiation. Note, however, that thermal effects can be damaging. I had posted some links here some months back about the other effects of rf. Seems there is a little more than just heating going on. I have noticed that the heating effect I "feel" on extended cell phone use is not actual heat. How do you know the effects were not thermal? The "malaise" some people feel when exposed to strong RF fields is very similar to the effects felt during a mild fever. My statement was based on how radio frequency fields interact with atoms and molecules. How the body "interprets" the molecular heating is an entirely different matter. To go back to Jeff's references, any nonlinearity can detect amplitude modulation. Nerve firing potentials are quite nonlinear, of course. The cilia in the human ear have mechanical resonances from typically 20 Hz to 20 kHz (unless you listen to rock music or are as old as I am). These same cilia have thermal time constants in the fractional millisecond range too. It seems to me that RF modulated at audio frequencies could easily be "heard" even though the effect might still be caused by heating. Interestingly, most cell phone fear is based on cancer. It's not hardly likely, for the reasons already outlined. The biggest danger to cell phone towers is if one falls on you. And the biggest danger from cell phone use is letting it distract someone who is driving a car (or train or subway). I'll not go so far as to say that there are no effects however. I suspect something is happening that we might not know about at this time - and there is some tantalizing evidence showing in some of the research. Unfortunately, many of the researchers do not understand radio frequency fields enough to design their experiments properly. Until they do, we will always be stuck with correlation confused with causation. 73, Barry WA4VZQ |
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