Re: non-potential voltage

[Bob Sciamanda <trebor@VELOCITY.NET>]

In paragraph 543 of his "Treatise on E&M" Maxwell states Lenz' law of
1834, and then continues:

"On this law F.E. Neumann founded his mathematical theory of induction . .
. "

Apparently Neumann (along with Weber) was part of an action-at-a-distance
school whose conclusions Maxwell used as a " test target" for his field
theory.

Bob

Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net
http://www.velocity.net/~trebor

----- Original Message -----
From: "Paolo Cavallo" <ton0621@IPERBOLE.BOLOGNA.IT>
To: <PHYS-L@lists.nau.edu>
Sent: Monday, April 17, 2000 2:29 PM
Subject: R: non-potential voltage


> ----- Original Message -----
> From: Leigh Palmer <palmer@SFU.CA>
> To: <PHYS-L@lists.nau.edu>
> Sent: Monday, April 17, 2000 7:20 PM
> Subject: Re: non-potential voltage
>
>
> > This is the first time I've heard the name Neuman (Neumann?)
> > associated with this equation. I've always parenthetically
> > noted that the minus sign is the expression of Lenz's law.
> > Who was Neuman and why is his name attached to this law
> > I've always attributed to Michael Faraday and Joseph Henry
> > (though I suspect neither expressed it mathematically)?
>
> I always knew that law as the Faraday-Neumann-Lenz law. F.E. Neumann
(1798-1895) was a
> phisicist and a teacher (Kirchhoff was a student of his). I believe that
H.F.E. Lenz
> (1804-1865) was the first to state mathematically the rule about the
sign, and that
> Neumann started from there to formulate the theory of induction.
>
> ==================================================
> Paolo Cavallo                " I am a teacher at
> ton0621@iperbole.bologna.it    heart, and there
>                                are moments in the
>        classroom when I can hardly hold the joy. "
>                                P. J. Palmer, 1998
> ==================================================