Homopolar generator idea

[shylo]

In the video what would be the result if you spin the stator and magnet?
One in both the same direction, the other in opposite directions?
I would think the voltage would double.
artv

[F6FLT]

In the video what would be the result if you spin the stator and magnet?
One in both the same direction, the other in opposite directions?
I would think the voltage would double.
artv

agreed.
The answer was above. Here are all cases:

1. Disc rotating + stator at rest: voltage
2. Disc at rest + "stator" rotating : voltage
3. Disc rotating + "stator" rotating in the same direction : zero voltage (due to no relative speed)
4. Disc rotating + "stator" rotating in the opposite direction : twice the voltage (due to twice the relative speed)

In any case, magnet rotating or not rotating: same effect

If case 3 provided a voltage, you could charge a capacitor connected between the axle and the rim of a Faraday disk and rotating with it. I did this experiment to be sure: no voltage.
I rotated the disc with the capacitor for a while, then I accelerated the motor, which disconnected the capacitor by centrifugal force on the rim contact. But at the arrival after stopping the motor, the capacitor was not charged!

[seaad]

In any case, magnet rotating or not rotating: same effect

Right motor is constantly spinning. Readings center to rim.
Left motor: magnet rotating + or -,
or not rotating at all: same effect

[F6FLT]

Right motor is constantly spinning. Readings center to rim.
Left motor: magnet rotating + or -,
or not rotating at all: same effect

Never believe without verification!   
Good point, and nice demonstration!

[shylo]

So the stator has to see the disc in motion,and as long as a magnetic field is present a voltage is produced.
If you put on a second stator,could you collect double the voltage?
Or stators on both sides of the disc,reverse polarity but still a voltage?
artv