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Scout - you are correct. To create an electric current, the
magnetic field must be changing. This is basic and fundamental to Maxwell's equations and should have been known to those posting permanent magnets creating electricity. Electrons moving inside 'shells' of the atom are totally irrelevant to electricity. Electricity means electrons move from atom to atom. It means the conductive path is a complete circuit. A permanent magnet has no moving field; therefore creates no electricity. Motion is also necessary. Furthermore note many half truths. Where are the numbers? Yes the sun can vaporize anything. Therefore we must keep everything out of the sun? Too much salt kills. Therefore the salt shaker should be treated as a hazardous material. This is how others promote hype and fear. No place do these fears apply to high voltage power towers. You would think from these posts that those high voltage towers subject the human body to 5 Telsa. In one cited study, 200 mGauss caused changes to cellular growth. That proves fields from electric lines will harm humans. Wait. That field is less than the earth's magnetic field. Therefore we are all being killed by the earth? This is the type of hype and fear being promoted. Worry. Where the wire bends, then fields are so much stronger? How much stronger? Trivial stronger. Again numbers would expose the hype. And hype it is. Posted is proof that all electric fields kill? Why do trivial fields from power lines kill when significantly larger fields (a decade+ larger) from the CRT do not? In another citation, field exceed 1 gauss before considered dangerous. So where is this 1 gauss field from the high voltage distribution line? It must be if the line is 230 Kv? Again, posted was fear without considering what actual numbers would be from that power line. So what is cited as dangerous? Because fields generated by a building transformer might be hazardous, then high voltage transmission lines also must be dangerous? Again, notice which electric lines are discussed. Not those high voltage transmission lines. Lower voltage, high current electric wires inside the building. Again there is this problem with hyping all electricity as dangerous only because very high magnetic fields MIGHT be dangerous. Ball park numbers. Long before the location is dangerous, a CRT or TV would have display problems. Now we have something concrete to consider. IOW we have a ballpark number AND some way to measure for that number. More interesting. What fields are really deadly? Magnetic or Electric? I wonder if those hyping fear even know the difference. But most shocking is some ridiculous idea that a motionless magnet creates electricity. Get the gauss meter. Take some measurements. Suddenly much of the hype being promoted here by some will disappear. Amazing what a few numbers can do to make so many previous posts irrelevant or misleading. Scout wrote: I thought the flux had to cross a conductor for current to flow. "Bob Crantz" wrote in message link.net... A permanent magnet does have current flow. |
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