Subject: Re EMF in the barnyard... (fwd) & "stray voltage" (fwd)
Date: Wed, 17 Jun 1998 083700 -0500 (CDT)
From: "Roy L. Beavers" <rbeavers@llion.org>
To: emfguru@hotmail.com
--------------------------------------------------
x---------- Forwarded message ----------
Date: Tue, 16 Jun 1998 19:48:11 -0700 (PDT)
From: marjorie lundquist
To: "Roy L. Beavers"
Cc: dahlberg@cord.edu
Subject: Re: EMF in the barnyard... (fwd) & "stray voltage"
Duane has made a good point, drawing a parallel between the "stray
voltage" problem on farms underneath high voltage transmission lines
here in the USA and the very similar problem on Herr Altenweger's farm
in Germany.
I am satisfied that the similarity is not accidental. Both are
manifestations of the very same problem, in my judgment. (In fact,
many of the comments I have made to Wolfgang about the situation on
Herr Altenweger's farm draw on information learned from the
transmission line problem here in the USA that Duane mentions.)
For those who are not aware of it, I will repeat that I believe the
health problems around electric power lines are caused NOT by ELF
fields, but by RF fields. These RF fields surround electric power
lines that carry RF signals. Certainly most transmission lines in the
USA carry such RF signals, and therefore are surrounded by an RF field.
Also, only RF could cause the "stray voltage" problems that Duane
refers to. If this was caused by ELF (power frequency fields) then
the additional grounding that is done to try to correct the "stray
voltage" problem WOULD correct it! But in reality, it makes it worse!
And that is exactly what would be expected if the culprit were RF
fields.
Here is a bit of physics: In a static electric field, the voltage
between two points in space is INDEPENDENT of the path between these
two points. In an ELF field, for all pracatical purposes, this is
still true. But in an RF field, this is no longer true. The voltage
between two points depends on the path! This means that there is NO
UNIQUE VOLTAGE between two points! Along one path, the voltage
difference between two fixed points P and Q may be 100,000 volts; but
along another path between the same two points, the voltage difference
could be almost zero! In such a situation, current will flow along
those paths having the highest voltage difference.
Microwave engineers have encountered this phenomenon. The open end of
an active waveguide can produce a spark that jumps across the opening.
The voltage that produced this spark must have exceeded the
dielectric breakdown for air, yet the two points at the ends of the
spark are on the metal waveguide, which is shorted out (literally!) by
a different path along which the voltage difference is essentially zero!
It is a weird world in which there is not a unique voltage difference
between two fixed points--but it is the real world, when that world is
filled with RF fields!
The only way to correct the "stray voltage" problem around
high-voltage transmission lines is to take the RF signals off those
lines. Fortunately, this is now feasible; fiber optic cable can serve
this function. But the state commissions that regulate electric power
transmission in the USA have to require that electric power companies
switch over to using fiber optic cable, and they are not doing this
because they are ignorant, or perhaps they are too political (being a
governor's lap-dog, maybe).
With the transmitters on the tower on Herr Altenweger's farm, there is
no such easy solution, I fear. Probably some of the transmitters will
have to be turned off, or else moved some distance away. -- Marjorie
*********************************
Marjorie Lundquist, Ph.D., C.I.H.
Bioelectromagnetic Hygienist
P. O. Box 11831
Milwaukee, WI 53211-0831 USA
*********************************
P.S. Thanks for writing, Duane.
=========================================
---"Roy L. Beavers" wrote:
>
> ---------- Forwarded message ----------
> Date: Mon, 15 Jun 1998 08:45:26 -0500 (CDT)
> From: Duane Dahlberg
> To: "Roy L. Beavers"
> Cc: emfguru@hotmail.com
> Subject: Re: EMF in the barnyard......
>
> Hi Roy:
>
> Having worked with stray voltage on dairy farms in the U.S. for
about 15
> years, it is interesting that the effects observed in the dairy herd
on
> this Bavarian farm are identical to the effects in dairy herds in
stray
> voltage farms. Although transmitting towers have also been
associated the
> stray voltage problems in the U.S., the most common association is
with
> electric current from the distribution neutral reaching the cows by
means
> of earth paths. Calcium loss is also a common problem for cows when
> exposed to power frequency current present in the ground. Since
calcium
> is an ion in the body, it might also be driven by direct currents.
Direct
> currents arise in the environment from a number of sources, one of
which
> is the rectification of alternating current both in the earth and in
> living organisms. Alternating currents of power frequencies and other
> frequencies are present in living organisms both because of
induction from
> magnetic fields and because the earth to which everything is
connected is
> used as one terminal of the entire electrical distribution system.
>
> Thank you.
>
> Duane Dahlberg
> dahlberg@cord.edu
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Reprinted with permission of Roy Beavers, http://www.feb.se/EMF-L/EMF-L.html