Re: magnetic field


N:dlzc D:aol T:com (dlzc) wrote:
Dear Sue:

"Sue..." <suzysewnshow@xxxxxxxxxxxx> wrote in message
news:1143614821.162757.264040@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

N:dlzc D:aol T:com (dlzc) wrote:
Dear 100%:

"100%" <p3or94hr092hjtg82l1h8@xxxxxxxxxxxx> wrote in message
news:1143580862.506602.311200@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
what is tha compsition of a magnetic field?

<< Electrostatic field and length contraction. >>
There is no Smith-Purcell radiation
http://physics.weber.edu/schroeder/mrr/MRRtalk.html
...on your refrigerator door magnets.

So? There are domain or grain "currents".

The velocity is too low

It isn't the size, it is the numbers involved..

and the logic is circular.

So is the magnetic field!
Circular motion... not logic LOL.

The magnetic force is the superposition of the
Coulomb force of moving charges:
<< all magnetic fields encountered in nature are
generated by circulating currents. >>
http://farside.ph.utexas.edu/teaching/302l/lectures/node62.html
http://en.wikipedia.org/wiki/Multiple_integral
http://web.mit.edu/8.02t/www/802TEAL3D/teal_tour.htm

And length contraction...

Length contraction is imaginary becaure the
background "fabric" is imaginary. If you learn to derive
the magnetic force with the time independent M.E.s
then it is easier to see what *length contraction* is
describing. It isn't even very helpful term if you are
starting from a Coulomb rather than a mechanical
fluid. Even in the time dependent M.E.s it hard to
equate anything to it.

<< Abstract. Several authors have asserted that the
magnetic field due to an electric current is a relativistic
effect. This assertion is based on the fact that if one
assumes that the interaction between electric charges
is entirely due to the electric field, then the relativistic
force transformation equations make it imperative that a
second field - the magnetic field - is present when the
charges are moving. However, as is shown in this paper,
if one assumes that the interaction between moving electric
charges is entirely due to the magnetic field, then the
same relativistic force transformation equations make it
imperative that a second field - this time the electric field -
is also present. Therefore, since it is impossible to interpret
both the electric and the magnetic field as relativistic effects,
one must conclude that neither field is a relativistic effect.
The true meaning of the calculations demonstrating the
alleged relativistic nature of the magnetic field and of the
calculations presented in this paper is, therefore, that the
idea of a single force field, be it magnetic or electric,
is incompatible with the relativity theory. >>
http://www.iop.org/EJ/abstract/0143-0807/17/4/006

We might take the product of two sides to find the area
of a rectangle and display an elegant looking mathematical
expression. Nature has to integrate the area under a curve
'cause she can't remember the multiplication tables. ;-)

Sue...





David A. Smith

.

Relevant Pages

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