Date: Tue Mar 24 15:34:52 2009 Back to Contents ------------------------------------------------------------------------

Author: Wallin, Stephen R

Subject: Re: Power Lines and cows?


For a loop or magnetic sensing max along circular hoops about lines, when high current or lots of vars. A wire antenna then picks up on electric field which max to and fro directed to high tension line. I do it in the lab, but once one student blew out a signal generator on circuitry inside fused zone. How do you make signal generators 'idiot-proof'?
Stephen in Pueblo

-----Original Message-----
From: [] On Behalf Of Bill Alexander
Sent: Tuesday, March 24, 2009 11:58 AM
Subject: Re: [tap-l] Power Lines and cows?

I would think minimum would be perpendicular to the power lines, but
now that I think about it, I am not sure. I do believe it would be a
small effect regardless, since although high voltages are involved,
the towers are tall, and net voltage over all 3 wires is always zero.


> What are you saying is the orientation for minimum field effect?
>At 3/24/2009 08:34 AM, you wrote:
>>> Don't forget, in the study there were east-west transmission
>>>lines, under which the cattle were lined up east-west. I'm still
>>>inclined to think if there is anything to this, it will be due
>>>primarily to electric field effects...
>>I Believe if it were an electric field effect, the cows would be
>>oriented for minimum field effect, not maximum delta V.


Bill Alexander
Physics Dept.
Humboldt State University
(707) 826-3212

From Tue Mar 24 15:34:52 2009