Unless something has changed recently, there was only one study that purported to show a link between the magnetic field from an overhead high voltage power line and cancer. And that study was withdrawn a few years ago when the author admitted that he’d faked the data. So, unless there is something new, none of this passes the smell test.
But, I’m skeptical about anything an ambulance chaser comes up with, so that may just be my bias showing. Ghery Pettit ________________________________ From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of Fred Townsend Sent: Tuesday, July 29, 2008 1:02 PM To: Tang, George Cc: John Woodgate; emc-p...@ieee.org Subject: Re: Another Cancer Scare? George, thank you for your citations. Someone once wrote, "If you want to understand what is going on, follow the money." When I Google your citations the ads from lawyers to join class action lawsuits on cell phones pop up. So far what I read doesn't pass the smell test. I have personally researched harmonics on power systems. They are not that common. They typically occur with 3 phase systems where switching power supplies are used which means computer centers and the like. Computer centers are a controlled environment where they try to keep the people away so they won't pollute the computers. Commercial power lines are almost always in conduit which means they are shielded as well. After all computer rooms are full of magnetic media. (You wouldn't want to damage the media would you?) You really have to work at finding low frequency harmonics that impinge on people. By definition harmonics are smaller than the fundamental which means if you start with a small fundamental the harmonics are going to be even smaller. It is common to increase the dosage to accelerate cancer testing so why not use strong fields to accelerate the test. This is easy to do in the lab but difficult to do if you are using observation data from real life. Of course if you are using real life data, it is no longer a controlled environment. There is good money to be made if you can claim to be an expert witness that has seen cancer cells caused by magnetic fields. It is not surprising then that people will stand up in court and perjure themselves. In court, experts can give opinion in place of facts which is something ordinary people can't do. In the case of juries isn't it interesting that people that know nothing about the subject at hand are given the final say. Fred Townsend DC to Light Tang, George wrote: John, You have provided very good info. My comment is that the fields used in the experiments are relatively weak, in the range of a few microT to 1800 microT, and the durations are relatively short (a few days). Researchers have found that when they increase the field strength up to 100 milli-G for months up to 1 year, the results show an increase in cancer cells growth. George From: emc-p...@ieee.org [mailto:emc-p...@ieee.org] On Behalf Of John Woodgate Sent: Friday, July 25, 2008 11:39 PM To: emc-p...@ieee.org Subject: Re: Another Cancer Scare? In message <4caa0df84cab184eb09525a5938e5c744e98a...@cosmail02.lsi.com> <mailto:4caa0df84cab184eb09525a5938e5c744e98a...@cosmail02.lsi.com> , dated Fri, 25 Jul 2008, "Tang, George" <george.t...@lsi.com> <mailto:george.t...@lsi.com> writes: There has been some research published in the last few years about power line harmonics inducing cancer in the human body. These are fields in the kHz to hundreds of kHz and currents in the range of tens of amps to hundreds of amps. There has also been a very great deal more research published that finds no such effects. See, for example: http://www.faqs.org/faqs/medicine/powerlines-cancer-faq/ If there were hundreds of amps at hundreds of kHz circulating in any power distribution system, it would collapse due to system capacitor heating and vast over-voltages on system inductors. -- OOO - Own Opinions Only. Try www.jmwa.demon.co.uk and www.isce.org.uk Either we are causing global warming, in which case we may be able to stop it, or natural variation is causing it, and we probably can't stop it. You choose! John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. Website: http://www.ieee-pses.org/ To post a message to the list, send your e-mail to emc-p...@ieee.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 emcp...@ptcnh.net Mike Cantwell mcantw...@ieee.org For policy questions, send mail to: Jim Bacher: j.bac...@ieee.org David Heald: emc-p...@daveheald.com All emc-pstc postings are archived and searchable on the web at: http://www.ieeecommunities.org/emc-pstc
