Cortland, Interesting grant proposal. How would you plan to control for herd behaviour, since that may have direct influence on the cows desire to align themselves relative to each other...
Doug [email protected] Find me near 43°24'24.96"N 80°24'25.95"W. On Mar 17, 2009, at 19:22, Cortland Richmond wrote: It is an interesting item. The news reports I've heard are that the observations show cattle aligned N/S except under HV power lines (I have not yet read the article.) The conclusion that cattle align themselves with the Earth's magnetic field at all is based on one assumption, that the alignment is due to magnetic fields and not because (say) they're warming themselves in the sunlight or some terrain influence. That power lines cause them to lose the ability to sense magnetic fields is based on TWO assujmtions, and needs a closer look. If, as in some animals known to sense North, cattle do sense the magnetic field by way of magnetite particles, and if those are small enough, it is POSSIBLE they might no longer sense North due to the AC fields under power lines moving those particles around. I should apply for a grant to install inductors on a herd of cattle, and DC/AC converters, so that I might selectively induce AC magnetic fields on selected bovines and see if they fail to align with the herd. Heh! Cortland Richmond KA5S. ----- Original Message ----- From: Price, Edward <mailto:[email protected]> To: [email protected] Sent: 3/17/2009 10:36:15 AM Subject: RE: Interesting Article ________________________________ I wonder if the original study noticed if the cows were aligning true North, or if they were following the angle of declination and aligning with magnetic North? I would be more inclined to suspect that cows aligned with some respect to linear features of their local topography. As cows have not been selectively bred for intelligence, they can be influenced by even a simple line painted on the ground. ... - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]> - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at http://www.ieeecommunities.org/emc-pstc Graphics (in well-used formats), large files, etc. can be posted to that URL. Website: http://www.ieee-pses.org/ Instructions: http://listserv.ieee.org/request/user-guide.html List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher <[email protected]> David Heald <[email protected]>
