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Re: [Phys-L] Field Lines and charges



Yes, they do balk at singularities. Divide by zero is big problem that
computers don't know how to solve. Maybe they should be taught how to take
limits.

John M. Clement
Houston, TX

-----Original Message-----
From: phys-l-bounces@mail.phys-l.org
[mailto:phys-l-bounces@mail.phys-l.org] On Behalf Of
treborsci@verizon.net
Sent: Tuesday, July 03, 2012 3:28 PM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] Field Lines and charges

Gauss' law is a physical fact. The field line is a
metaphorical construct to help us visualize the electric
field distribution.

An unspoken implication in this metaphorical construction is
the expectation that one, and only one, field line goes
through a given space point. It is this expectation of the
metaphorical field lines that is violated in the cited situation.
At a given x=0 space point, several field lines coexist. The
usual computerized field line construction algorithm will
balk in this situation.

Bob Sciamanda
Physics, Edinboro Univ of PA (Em)
treborsci@verizon.net
http://mysite.verizon.net/res12merh/

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