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![]() "w_tom" wrote in message ... Where are your numbers, Bob Crantz? Read the NASA citation. There's numbers. Read the handbook for Magnetic shielding. There's numbers. Every reference I gave has numbers. A stationary and permanent magnetic creates electricity? Yes it can, if you move relative to it. Faradays unipolar generator (featured on the English 20 pound note) needs no relative motion between the conductor and magnet to produce electricity. Look it up. Which field is dangerous - electric or magnetic? They both can be. And how much? 80 mv transmembrane potential is all it takes. How much are the fields under a high voltage transmissions lines? Between the lines take the voltage between them and divide by the separation of the lines to get the field strength in volts per meter. If you know the location of the ground below them (as in electrical ground) you can create the image circuit (using the method of images) and calculate the field strength also at the ground level. And why do you worry about those high voltage wires when your own citations, instead, discuss lower voltage wires inside the building? The high voltage is ionizing the air. Ever hear that crackling noise? What is the voltage induced in a moving object under a power line? Any idea? Indoor wiring = very bad! It is a classic junk science maneuver. Hype some fear. Provide no numbers. Then when numbers expose the fear as hype, attack the messenger rather than provide required numbers. Well, where's the proof of your point? Tell us Bob Crantz. How strong are those fields underneath that high voltage transmission line? You hyped the fear. But you forgot to mention whether such fearful numbers even exist under that transmission line. 100 V/m typically, which would induce 200 volts in a standing human. 80 mV is all it takes. In the meantime, others should again remember which electric lines are accused of being dangerous. Not the high voltage transmission lines. Even Bob Crantz's own citation discusses which electric lines were originally suspect. Those low voltage wires inside the building. Worry more about where the wire to your electric stove is routed - if there is anything to even worry about. I'd really worry about wiring in the house! Molecular resonance. Fine. Why is it so dangerous? You forgot to mention field size - provide numbers - that make molecular resonance significant. It was not an accidental omission. In large molecules, such as DNA, resonance can be used to alter the molecule. The field strength or magnetic moment would have to exceed the bond energy of the particular molecular link. Don't take an MRI. Those fields are so much stronger as to kill everyone who gets an MRI? Don't get X-Rays. Those are so much stronger as to kill everyone who gets an X-Ray? (XRays are ioninzing radiation, much stronger, much more dangerous than the 27 MHz field of an NMR machine.) Why do MRI machine operators work in a shielded area? It's the cumulative dose that counts! You can get one big dose in a short time or live under a powerline for decades. Or maybe the hype should first provide some numbers? According to what Bob Crantz has posted, then clearly MRIs must kill some people. Why? Where are his numbers to go along with all those dead brain cells? It's the cumulative dose. MRI's have killed people. Fortunately Scout will get a meter and learn the numbers. Numbers are what the first posts in this thread should have provided up front. Missing numbers are why so many can post fear about electric transmission lines. No numbers is the source of so much 'junk science' promoted fear. Didn't check my references did you? Bob Crantz wrote: Where are you facts to support your assertions? You infer the Leeper study and then don't mention it by name. You completely fail to even consider molecular resonance. You fail to consider aggregate resonance of the human body. You cite the complexity of field conditions, which is true, but fail to cite controlled laboratory experiments which can isolate cause and effect and show the effects of electric and magnetic fields on biological systems. Here's just one example of magnetic fields used to control brain chemistry: http://nursing.vanderbilt.edu/pain/r.../pub-prot.html Here's some Q&A: http://www.mcw.edu/gcrc/cop/powerlin...r-FAQ/toc.html Note the conclusions in the article say powerlines can't hurt you as far as cancer and leukemia go. Just for fun, take a light steel or copper cable/wire (uninsulated) and use it as a jump rope with your bare, sweaty hands under a power line. Try it at different distances and orientations from the line. "w_tom" wrote in message ... Many replies are so full of urban myth that I must restart. Lets start with health effects rumored to be caused by electricity (and ignore that original study was later discovered with gross statistical errors). Many immediately assume danger was in high tension wires. They first failed to learn or demand the numbers. Those health effects, if exist, were more likely from something that creates stronger fields - such as wires underneath floor and inside walls, from circuit breaker box to central air conditioner. Those who jump to conclusions immediately assumed the study was about high tension wires. 'Those' include many news anchors who refuse to first do what all responsible anchormen are suppose to do - verify the story - hold the reporter's feet to the fire - do as Walter Cronkite did so routinely and so viciously. Immediately, the reply from many posters is suspect - having confused health risk warnings about something else - then assuming it must be high tension wires. They assumed as many irresponsible news anchors did on local news shows. Urban myth is now rampant even in this thread. ... Among the numbers not provided were line voltages. 128 kV? 230 kV? 765 kV? These also define other conditions such a noise. What is on those electric distribution towers? Bottom line. You need numbers before anyone can properly answer your question. Lets not forget, the original Scandinavian study that started all this hype was later discovered to have manipulated the statistics. This was discovered by other scientists who finally got access to the raw data. IOW hype continued until numbers were revealed. Any yet the speculation continues here - again without numbers. ... |
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