Author: Christophe Theron
Date: 13:43:53 05/31/02
Go up one level in this thread
On May 30, 2002 at 17:22:48, Dieter Buerssner wrote:
>On May 28, 2002 at 15:45:24, Robert Hyatt wrote:
>
>>A cell phone is a radio transmitter. Radio waves definitely interact with
>>human cellular structure, not always in "good" ways. Come down to UAB and
>>walk into our 7 Tesla MRI facility. It will make you dizzy if you move while
>>it is turned on. Which means that huge magnetic field is interacting with your
>>cellular structure in some way. Good or bad? Probably bad.
>
>I don't understand "MRI". I did research with very high static magnetic fields
>(25 Tesla, the magnet needed about 10 MW - superconduction does not work anymore
>with such high fields). I never felt "dizzy"´in the lab. My work was on the
>influence of magnetic fields on chemical reactions (which is related to the
>possible influence on humans/animals and biochemical reactions). Typically,
>there is no influence. Exceptions are reactions involving radical pairs (but
>biochemical reactions are not of this sort normally, with the famous exception,
>photosynthesis. BTW. the interaction is even understood on a quantum theoretical
>level). Of course, I would not compare static magnetic fields with the electro
>magnetic fields (waves) of cellular phones. Also, with such ludicrously high
>magnetic fields, one has significant physical effects. The viscosity of blood
>can double. However, with fields a "normal" human would ever encounter are
>orders of magnitudes lower, and known physical effect are very small.
>
>A nice anecdote told by a professor: The influence of high static magnetic
>fields on the reproduction of rats was tested. The surprising result: They
>stopped to reproduce. Later an errata appeared: "The cage was too small, they
>could not get over each other".
>
>Regards,
>Dieter
:) :) :)
Post of the day!
Christophe
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