Date: Mon Apr 2 23:22:24 2007

Author: William Beaty

Subject: Re: Visual Electricity Demonstrator

Post:
On Mon, 2 Apr 2007, Paul Nord wrote:

> The tradition is to describe current flow from positive to negative.
> This was set before the sign of the charge carrier was known. Bad
> choice.

Actually, the charge carrier always depends on which type of conductor
you're using. Metals are very common, but they aren't a standard
conductor, and we ignore other materials at our peril. Here's a brief
article I wrote about this problem:

Franklin should have said that electrons are positive? WRONG!
http://amasci.com/miscon/eleca.html#frkel




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William J. Beaty SCIENCE HOBBYIST website
billb at amasci com http://amasci.com
EE/programmer/sci-exhibits amateur science, hobby projects, sci fair
Seattle, WA 425-222-5066 unusual phenomena, tesla coils, weird sci

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