hi tony
ok
The source of information is hard work at first, it gets easier.
Ferrous and non ferrous metals have very different propertys
Spin-polarized currents flow well in magnetic materials, but when they enter non-magnetic materials the electrons begin to lose their spin polarization in a process called spin-flip scattering.
source
http://www.spintronics-info.com/technical/cold_copper_causes_spin_diffusionin Copper wire each atom cannot form a north or south pole so meyers vic will not work. copper wire has not worked for over 4 years now.
Spintronics is an advanced form of electronics that harnesses not just the electrical charge of electrons (as in conventional electronics) but also a property called spin that makes electrons act like tiny bar magnets
source
http://leebor2.741.com/spintronic.htmlinorder to stop current flow the electrons must form perfectly aligned magnets, they stick together (north to south poles) this is refered to as electron clustering. It is not 100% clear to me the physics but i know this works.
the magnetic field from the primary must be perfectly uniform. if not it will leak. even a leaky primary can be shown clearly to restrict current. a correctly wound primary will read zero amps on a multimeter that measure down to 10uA (test done on my vic).
Any questions please post, i dont know everything unfortunately. i know this
works.