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