> This is actually rather simple to explain.  The wires (bushings) which
> come off the copper surface /are/ moving relative to the magnetic field,
> and that is what is creating the current.

Yes but what if you have a ring of brushes that goes all the way around,
the magnet and disc stay still, and the continuous outer disc brush is
rotated (assuming far enough from the magnet's stray field so it does not
matter). From the p.o.v of GR it is the same thing. This is a nice
mind-bender imho ;-). You could make shaped holes (slots following the rim
of the disc) in the outer rim of the disc between the continuous brushes
and where the magnet starts to act powerfully, to find out if it matters
whether there is a radial current path outside the magnet's field. These
would oblige any current to flow by avoiding the slots (which would not
conduct obviously).

BTW there is also a motor that works according to similar principles.
Someone made a trial one from a ball bearing. He wrote an article on the
web about this. Same effect, Lorenz, used in reverse.

But I want to know if my version with the outer rotating brushes with the
still magnet and disc method works. ;-). It should, else there is a lot of
explaining to do ;-) ;-).

Peter

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