I always wondered why a T-bone steak came out oriented North on my plate – now I know.
________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Price, Edward Sent: 17 March 2009 13:34 To: [email protected] Subject: RE: Interesting Article ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of John Shinn Sent: Monday, March 16, 2009 11:12 PM To: [email protected] Subject: Interesting Article Interesting article on magnetic fields. Cattle respond to magnetic fields from power lines By RANDOLPH E. SCHMID, AP Science Writer Randolph E. Schmid, Ap Science Writer – Mon Mar 16, 5:21 pm ET WASHINGTON – High-voltage power lines mess with animal magnetism. Researchers, who reported last year that most cows and deer tend to orient themselves in a north-south alignment, have now found that power lines can disorient the animals. When the power lines run east-west, that's the way grazing cattle tend to line up, researchers led by Hynek Burda and Sabine Begall of the faculty of biology at the University of Duisburg-Essen in Germany report in Tuesday's edition of Proceedings of the National Academy of Sciences. They also found that cows and deer grazing under northeast-southwest or northwest-southeast power lines faced in random directions. The research team studied cows and deer using satellite and aerial images. In their report last August, Burda and colleagues suggested the north-south orientation was in response to the Earth's magnetic field. The new study adds weight to the animals responding to magnetic effects, since power lines also produce a magnetic field. And the effect was most noticeable close to the power lines, declining as the magnetic field of the electric lines was reduced by distance. Wind and weather can also affect which ways cows choose to face, but without such factors about two-thirds of them tended to align north-south when away >from power lines. 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. Ah hah, cows align with jet contrails; it's just that no researcher has looked up. More research is needed! I smell a grant! Ed Price [email protected] <blocked::mailto:[email protected]> WB6WSN NARTE Certified EMC Engineer Electromagnetic Compatibility Lab Cubic Defense Applications San Diego, CA USA 858-505-2780 Military & Avionics EMC Is Our Specialty - 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 (including any attachments) may contain confidential information intended for a specific individual and purpose. If you are not the intended recipient, delete this message. If you are not the intended recipient, disclosing, copying, distributing, or taking any action based on this message is strictly prohibited. - 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]>
