Hi Peter and all.

On Sep 30, 3:09 am, Peter wrote:
Dear all,

It is often stated that the magnetic field is a relativistic effect and, thus,
vanishes in the limit c-oo. Then, the electrical current would vanish with c-oo, too, correct? If yes, what is the meaning of 'there are no electrical

currents'?

Loosely speaking, the electrical field has got only one source: electrical
charge, while the magnetic field has got two ones: electrical currents and
spins, correct? If yes, then my question is: What is with the spin in that
coordinate system, in which the magnetic field vanishes?

Thank you very much, indeed,
Peter

Of course a "what if" question "c -oo" is hard.

Aside from the good replies you've received,
you seem to be asking (IMO) if the magnetic
field is essential to the structure of an electron.

That's very cool, (hope Jay chimes in), then
you're asking if organized matter (like an electron)
can exist if "c" were infinite and magnetism
vanishes (vanishes= becomes impossible).

IOW's the structure of an "e" may depend on
the finite speed of "c". If so, then the numerical
value of "c" must be entered into any formula
predicting the mass of "e", and so our generic
"c=1" would not be good enough, that I think
is an important lesson.

What do you guys think?
Regards
Ken S. Tucker

On Oct 2, 7:06 pm, "Ken S. Tucker" wrote:
Hi Peter and all.

On Sep 30, 3:09 am, Peter wrote:

Dear all,

It is often stated that the magnetic field is a relativistic effect and, thus,
vanishes in the limit c-oo. Then, the electrical current would vanish with c-oo, too, correct? If yes, what is the meaning of 'there are no electrical

currents'?

Loosely speaking, the electrical field has got only one source: electrical
charge, while the magnetic field has got two ones: electrical currents and
spins, correct? If yes, then my question is: What is with the spin in that
coordinate system, in which the magnetic field vanishes?

Thank you very much, indeed,
Peter

Of course a "what if" question "c -oo" is hard.

Aside from the good replies you've received,
you seem to be asking (IMO) if the magnetic
field is essential to the structure of an electron.

The *magnetic field* is essential to rational
mathematics.


http://en.wikipedia.org/wiki/Multipl...l_applications


That's very cool, (hope Jay chimes in), then
you're asking if organized matter (like an electron)
can exist if "c" were infinite and magnetism
vanishes (vanishes= becomes impossible).

Magnetism *vanishes* when the superposition
of Coulomb force stops working.

http://web.mit.edu/8.02t/www/802TEAL...ntegration.htm



IOW's the structure of an "e" may depend on
the finite speed of "c". If so, then the numerical
value of "c" must be entered into any formula
predicting the mass of "e", and so our generic
"c=1" would not be good enough, that I think
is an important lesson.

What do you guys think?

http://www.physics.nist.gov/cuu/Images/alphaeq.gif
http://www.physics.nist.gov/cuu/Constants/alpha.html


Sue...

Regards
Ken S. Tucker