Newsgroups: alt.sci.physics.new-theories
From: eraotg@eds.ericsson.se
Subject: Extra term in electromagetism
Message-ID: <1994Jul6.081359.1@eds.ericsson.se>
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Sender: news@ericsson.se
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Organization: LM Ericsson Data AB, Stockholm, Sweden
Date: Wed, 6 Jul 1994 06:13:59 GMT

Exrta term in the magnetic inductory law

The common law for induction of an electromagnetic force
in a magnetic field is given by:

                  e = N.d(B.A)/dt

where B = the magnetic flux density (weber)
      A = the area enclosed by the wire loop (m*m)
      N = the number of turns in the loop
      e = the induced electromagnetic force, volt

Hence, an electromotoric force is created when 
      1) B change and A is constant
      2) A change and B constant (B<>0)
      3) Both B and A change (B<>0)
 
B=constant and A= constant give no effect.

However, it seems possible to derive an additional term,
saying that also a small effect is received when B,A is
invariant.


            e= N.d(B.A)/dt + (B.A/c).dv/dt

For instance, if we have an monopolary machine with constant
B and A, but were you have an angular acceleration of a wire
loop, you can do the following calculations:

                                            2
v= V.sin(w.t); dv/dt = V.w.cos(w.t)dt/dt = w.R.cos(w.t)

Say f= 9000 r/min = 150 r/sec ; w= 2.Pi.150 = 1000

 2
w = 1000 000 ; if B= 1 weber , A =1 m(2) , R =1 m, we get :


(B.A/c).dv/dt = 1*1/3E8 *1 * 1000 000 = 0.01 volt (10 mV).

a small effect, but it seems it will be there.

(For more information of the theoretical background, ask
for my electromagnetic theory in E-mail).


-- 
Ove Tedenstig, ERA, Borgarfjordsgatan 9, 16480 Kista/Sweden
EMAIL: ERAOTG@KIERA.ERICSSON.SE