sci.physics.electromag

Hi

This is a interesting question I have been speculating about.

I hadn't read Assis and Hernandes,
so the source of my speculation is from page 30 in
http://www.scribd.com/doc/4445/quaternionic-electrodynamics

The vector part of eq. (4.4) reads

p[1]rp[2] + j[1]x(rxj[2]) - j[1](rj[2]) + p[1](rxj[2]) + (j[1]xr)p[2]

Here the first 2 parts is normal Grassmann force the 3rd part explain
the longitudinal force.

The 2 last parts is the antisymmetric parts which disappear when the
quaternionic equation is written like in (3.8).

But this a those parts which is important in this discussion,
the first part p[1](rxj[2]) describes a force on a free charge by the
magnetic field, such that it would move along the magnetic field lines.
The second part (j[1]xr)p[2] says that there is force on a current
moving in a electric field.

a example is that if a current moves in the direction of a electric
field and the current have a small perpendicular component then the
current will start spinning around a axis parallel to the electric field
which way it spins depend of the initial direction of the small
perpendicular component.

This could maybe explain the origin of the electrons spin.


xray4abc wrote:
> I think now that it does.
> Simple experiments, performed by Oleg D. Jefimenko and others
> have shown electric field-lines around the wiring of some electric
> circuits.
> (see references in 'The electric force of a current" by A.K.T. Assis
> and
> J.A.Hernandes ).
> These force-field lines are different from the ones that would exist
> if
> no current is flowing through the circuit.
> Interestingly, O.d. Jefimenko does not consider the current as a
> source of electric field.
> He mentions 3 sources of an electric field : 1. charge density
> 2.the
> time derivative of charge density
> 3.the
> time derivative of current density J
> My question is meant for those who are familiar with the mentioned
> authors'
> approach to the theory of electromagnetism.
> Regards, LL