N-machine theory tested

[PaulLowrance]

Here's an old experiment that I've wanted to do for ages. If it's already done, then please let me know. Experiment: Place a very long straight wire starting from the outer edge of disc magnet and going outward several feet or more. The wire never touches the magnet. At ~ 1/2 to 1 foot away from the magnet, cut the wire in two, and connect both wires to an electrometer. Then spin the magnet. I want to know if the electrometer shows a DC voltage. If there is, then there's an E-field.

[gravityblock]

From what I've read, there is a static electric field when current isn't being taken off the disc/magnet when they're rotating together.  If you were rotating with this disc/magnet, you're meter would read a voltage potential.....but this voltage isn't able to be brought out of the system due to no return path.

The external circuit provides the return path, but if it is also rotating with the disc/magnet, then it will have the same polarity as the disc, thus current can't flow.  The external circuit when rotating with the disc is just part of the disc and will have an electric field pointing in the same direction as the disc.

Relative motion between the disc and external circuit creates a return path for current to flow due to the EMF on the external circuit is pointing in the opposite direction as the disc.  Increasing the relative motion will increase the voltage.

Relative motion between the disc and outside circuit isn't required to have current to flow.  There are other ways, at least in theory.

[Craigy]

Does the below illustration show what you did? If so are you 100% positive the whole circuit if allows to rotate on a free axle rotates? This alone is something substational, I recommend you redo the experiment attaching the circuit to an axle so it can rotate.

Ok can try that tomorrow , i have some 21 mm x 16.3 x 6 n 35 rings, that i can cap with steel washers to increase the pole face  over the whole of the 21 mm dia, then  true it all on a shaft on the lathe and mount it on some nasa bearings, although it will need a little current limiting. I can't see it working  but cannot harm to try

[jadaro2600]

I tried this, as pictured, and it does not spin on the wire axis.

Can someone tell me why it doesn't even budge?...  perhaps I'm going about the oppositional field in the wrong way?

On second thought, this might work if I were to place two magnets N to N?

Or..more testing due I suppose.

I'm just looking for a variant setup to further the demonstration.

[broli]

Could you post a bigger picture, all I see is a twisted wire and what seems to be a screw in the middle.