Hi, I built one of these ball bearing motors and it works. The going theory of propulsion is heat expansion, I'd like to see other theories considered. (magnetic)
A question I have, If two parallel wires are carrying current in the same direction, do the wires attract or repel? (Two parallel wires as in two parallel ball bearings)
Good guess. But they attract.
John
To bunch up in the center would produce an electric field, due to positive charge nearer the surface and negative charge nearer the center. This field tends to keep the charges equally distributed. But there is a bunching effect, where (at DC) the force toward the center due to the magnetic field is balanced by the force away due to that electric field.
They repel.
Do any "isotropic piezoelectric" materials exist?
Well, Pride Week *is* coming.
Best regards, Spehro Pefhany
i think the heating expanding ball theory totaly explains it, any magnetic thoery would require motion in one direction as it is driven from dc.
however if you put a large magnet in the axis of the spindle in between the ball bearings this would make a unipolar motor.
Colin =^.^=
... wouldn't the life expectancy of such a motor be rather short?
Mainly due to the contact of the ball bearings degrading quickly and becoming a high resistance?
John
same
I would of guesed they atract but i wasnt sure i was going to look it up, then i remembered that if u have a superconductor, a wire carying a curent would induce a curent in the oposite direction and repel, so curents in the same direction must atract. if this is the case how come electrons traveling down a wire dont all bunch up in the center instead of moving to the edge like they do at RF ?
Colin =^.^=
same
the
Ooops yes thats the one, also ... actualy i think the ball races would need to rotate in oposite directions. so i gues the shaft would need to be split in the center with a simple bearing.
its like a farady disc at each end. i had thought of building such a thing to see what hapened.
the balls in the cages act like the wire that dangled down in the mercury (asuming the cages were plastic), the outer shell acts like the mercury contact.
its amusing some of the hype about free energy from these sorts of machines.
Colin =^.^=
direction, do the wires attract or >repel?
And the truth is that parallel wires carrying current in the same direction--
attract [ ] repel [ ]
Check one only :-)
direction, do the wires attract or >repel?
And the truth is that parallel wires carrying current in the same direction--
attract [ ] repel [ ]
Check one only :-)
up,
curent
the
traveling
edge
aha, of course :)
Colin =^.^=
John, that depends on your definition of short. I have ran mine a total of about 40 seconds. Not continuously though! ;-)
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