Re: Let's start a new convention Teaching Magnetism

[Bernard Cleyet <anngeorg@PACBELL.NET>]

Microscopically OK, but HS (beginning students) usually don't think
microscopically (one exception I immediately think of is gas kinetic
theory), or am I a bit behind the times?

bc, who wonders if there is (Philosophically &/or Physically) a problem
with thinking there is a "line"  leaving a bar magnet that is the same
as one that "entered" the other end.

John Mallinckrodt wrote:

> > I'm a bit lost here -- how does this conflict or confuse G's law?  This
> > is because I don't follow the "fact" that field goes into and leaves
> >
> >
> > from a pole.  I thought the idea of pole was it was a place where field
>
>
> > enamated from or disappeared into, not both.
>
> That IS the idea and it is why the concept of a "magnetic pole" is at
> least a little tricky since lines of magnetic induction do not (as
> far we know today) have beginnings or ends.
>
> John
> --
> John Mallinckrodt        mailto:ajm@csupomona.edu
> Cal Poly Pomona          http://www.csupomona.edu/~ajm