Re: Fields

[Ludwik Kowalski <KowalskiL@MAIL.MONTCLAIR.EDU>]

We all know what happens. But for the argument's sake let me
disagree with Philip's reply to Jim (see below).

If A interacts with B then some change in B must occur. That is
my definition of interaction. The superposition principle does not
imply the interaction of two fields, it only states that the
contribution
of one field to what we observe is not changed by the presence or
absence of another field. Thus, in classical physics, electric fields
do not interact.
                                           Ludwik Kowalski
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> Does it make any sense to say something like one electric field
> interacts with another?
>                                        Jim Green

> > Sounds imprecise, but not wrong.  Force fields interact in the
> > sense that they are vector fields, so electric fields add like
vectors
> > at any given point in space.  Thus, electric fields from multiple
> > sources can reinforce or cancel each other at any given point in
> > space.
> >                                     Philip
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