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Re: equipotentials

That is not the message I just sent
(responding to Hugh) about ten minutes ago.
But let me correct this old reply any way. The
term "projections" was not appropriate. It
should have been 'intersections with chosen
planes," or something like this. I will resend
my reply to Hugh in a moment.
Ludwik Kowalski

On Friday, Feb 20, 2004, at 14:18 America/New_York, Ludwik Kowalski

Equipotential surfaces never cross.
Neither do the equipotential lines
which are projections of such surfaces.
Ludwik Kowalski

On Friday, February 20, 2004, at 11:32 AM, Justin Parke wrote:

Can equipotential surfaces cross? If so then in what direction does
the electric field point at the line of intersection?

(This is another disagreement between me and the "back of the book"
answer for a textbook question)

Justin Parke
Oakland Mills High School
Columbia, MD