Date:

Author: Rick Tarara

Subject: Re: Power Lines and compasses?

Post:

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http://www.energex.com.au/network/emf/community_emf_info.html

seems to be a measurable effect--but at a very low level--20 milligauss.

BTW: Driving through Colorado just in front of a very strong electrical =
storm, I did notice that the cattle were congregating and orienting =
themselves in a uniform direction. =20

Rick

***************************
Richard W. Tarara
Professor of Physics
Saint Mary's College
Notre Dame, IN
rtarara@saintmarys.edu
******************************
Free Physics Software
PC & Mac
www.saintmarys.edu/~rtarara/software.html
*******************************
----- Original Message -----=20
From: cbettis@unlserve.unl.edu=20
To: tap-l@lists.ncsu.edu=20
Sent: Tuesday, March 17, 2009 11:06 AM
Subject: Re: [tap-l] Power Lines and compasses?

Jim,

Here is a link to the story:

http://www.npr.org/templates/story/story.php?storyId=3D101945271

Cliff

Quoting "Papp, James J " :

> How do the cattle detect a magnetic field? How did the researchers
> measure the cattle's alignment with the Earth's magnetic field? Does =
the
> oscillating field of the lines register with cattle at all, as =
opposed
> to a basically static field from the earth? What is the strength of =
the
> power line field where the research took place? What is "near" to a
> power line, in meters? How much current did that line carry? Etc.
>
> Jim
>
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ht= tp://www.energex.com.au/network/emf/community_emf_info.html

seems to be a measurable effect--but at = a very low=20 level--20
milligauss.

BTW: Driving through Colorado = just in front=20 of a very strong
electrical storm, I did notice that the cattle were=20 congregating and
orienting themselves in a uniform direction. =20

Rick

***************************
Richard = W.=20 Tarara
Professor of Physics
Saint Mary's College
Notre Dame, = IN
rtarara@saintmarys.edu
****= **************************
Free=20 Physics Software
PC & Mac
www.saintmarys.= edu/~rtarara/software.html
*******************************<= /DIV>
----- Original Message -----
*From:*=20 cbettis@unlserve.unl.edu <3D"mailto:cbettis@unlserve.unl.edu"> =
*To:* tap-l@lists.ncsu.edu <3D"mailto:tap-l@lists.ncsu.edu">
*Sent:* Tuesday, March 17, 2009 = 11:06=20 AM
*Subject:* Re: [tap-l] Power = Lines and=20 compasses?

Jim,

Here is a link to the story:

http://www.npr.org/templates/story/story.php?storyId=3D10= 1945271

Cliff

Quoting=20 "Papp, James J " :
>=20 How do the cattle detect a magnetic field? How did the=20 researchers
> measure the cattle's alignment with the Earth's = magnetic=20 field?
Does the
> oscillating field of the lines register with = cattle at=20 all, as
opposed
> to a basically static field from the = earth? What=20 is the strength
of the
> power line field where the research = took=20 place? What is "near" to a
> power line, in meters? = How much=20 current did that line carry? Etc.
>
>=20 Jim
>------=_NextPart_000_0048_01C9A6F8.61391180-- From
tap-l-owner@lists.ncsu.edu Tue Mar 17 12:28:53 2009

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