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It's too bad you've chosen to limit your thinking in this way, but as
long as you can fit everything that interests you into the box you've created, I guess it doesn't cause you any problems. I'd think you'd have to avoid such topics as lightning and positive ion generators, though. It's a common mistake to equate "current" or "charge" with "electrons", but probably no more common than lack of understanding of what RMS and average mean. A lot of people seem to manage to maintain a more-or-less consistent view of electricity while carrying around some pretty mistaken ideas. In my experience, though, now and then they end up really stumped by something, while someone with a more complete view of basic electrical physics has an easy time understanding and analyzing what's going on. We all make our choices. Roy Lewallen, W7EL Bill Turner wrote: On Fri, 08 Oct 2004 13:59:57 -0700, Roy Lewallen wrote: What's the problem with current flowing from plus to minus? After much head-scratching, the only problem I can see is that it doesn't. It flows from minus to plus. I believe it was Ben Franklin who realized that there are two polarities of charge, and arbitrarily called one plus and one minus. If he had made the other choice, positive or negative charge would indeed flow the other way. Murphy triumphs again. What you say about the mathematics being made easier I can agree with. The trouble is, some engineers take it a step further and say "yes, current *really* does flow from plus to minus." I then ask them to explain how a vacuum tube works, especially why it needs a hot cathode to "accept" electrons. Blank stares. Ah, well. -- Bill W6WRT |
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