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Old May 14th 08 posted to sci.physics.electromag,sci.physics
Y.Porat
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Posts: 6,606
Default Does a field rotate with a magnet?

On May 6, 8:27*pm, Uncle Al wrote:
Benj wrote:

OK. Let me pick your brains. *I'm working on the age-old question does
a magnetic field rotate with the magnet if you spin it. *People have
established that if you put a loop near a Faraday generator and spin
the magnet you get no voltage. Some have taken this as proof that the
magnetic field does not rotate with the magnet. But others have shown
that the voltage induced in a loop this way is zero because the
voltage in the front side of the loop is exactly canceled by the back
side of the loop. Hence one person has even formulated a "law" that
says you cannot ever determine if the field rotates IF you only use
CLOSED loops!


[snip crap]

Given an axially symmetric dipole magnetic field, what does "rotate"
mean when the symmetry axis is the rotation axis? *Are you implying
that lines of force are physical entities that can flow through a coil
and entrain charge?

----------------------
yes crackparroter
do you really know what is charge anyway??
---------

Benj
(who notes that answering the rotating magnet question is a "good
first step" toward finding that precise arrangement of magnets that
will produce "free energy"!)



Idiot.


not my paragraph
anyhow :
it is not free energy
it is conserved energy
inner energy




* *1) Time is homogeneous.


idiot

* *2) Noether's theorem
* *3) Mass-energy is locally conserved.


do you mean that energy has mass ??

if yes welcome to sane physics

ATB
Y.Porat
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