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[quote]QUOTE: Originally posted by csomervi It's not about "magnetic" charges - it's "static" electricity - electrical potential - voltage differences - between the cloud and ground. The voltage necessary to generate that huge (3 times hotter than the sun) arc discharge between cloud and ground is hundreds of thousands (or even millions) of volts. [/quote] Three times hotter then the sun? Never heard that before evn on the discovery channel! [quote]QUOTE: Power lines are indeed struck with some frequency - they are often higher than the surrounding conductors, and regardless of what charge the power company puts on them (which is by the way AC not DC so it's neither always positive nor always negative) [/quote] top line emeits a magnetic field, and whats this Bull about a static electricity, which plays no role, FOR THE RECORD, power lines are the least likely to get struck by lightning [quote]QUOTE: Tracks might as well be ground. Whatever signal-activating voltage is there is low (24 volts or less is my guess - kids don't get electrocuted shorting tracks together with a length of wire to see the crossing signals go on) [/quote] Wow, that is Stupid, see Trains have Axels, and the wheel one one track is connected to the wheel on the other track, if those were opposite charges, we'ed be crap out of luck and be shorting everyhting out every time a train goes over the tracks.. Wow, obviously not troubled with the smarts are we? [quote]QUOTE: The anecdotes 2 or 3 others have posted here about lightning-struck engines in their shops within the last few months would seem to indicate it happens a bit more frequently than lottery winning. From NASA... "Typically, more than 2,000 thunderstorms are active throughout the world at a given moment, producing on the order of 100 flashes per second." [/quote] [red] you know, i may not like Cabforward a heck of alot, but what Him and I do know is that the chances of a train being struck by lightning are slim to none, okay jack sprat?
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