Faraday paradox revisited,magnetic field rotation question.

[PolaczekCebulaczek]

hello

I decided to start this topic because I want to summarize all we know about Faraday disk paradox in one topic on this forum, this may be helpful for further homopolar generator study.The most important question is "Does magnetic field rotate with magnet or not?"
let's consider a situation like this :

A coil is wrapped around a magnetized core (cylinder magnet). Both the coil and magnet are rotating together around the axis of the cylinder. Will current be induced in the coil?
This permanent magnet is ceramic, not iron; this should stop any induction taking place inside the metal body of the magnet.(if magnetic field does not rotate) This will simplify things and eliminate unwanted effects.

anyone tried this configuration?

[Magluvin]

I see where you are coming from here. Most likely the windings will have to have more angle from top of the mag to the bottom in order for the fields to cut the windings properly. At 90deg is best, but if the windings are tight, each turn is more closer to 0deg. Higher angles would mean less turns and less voltage out.

I like the config though. If the widings have more than 0deg angle, there should be something. Being it is one magnet and it is not dragging the mag field around like bunches of mags, the field should remain still like a big disk. But only if the magnets field is uniform. I have some neo mags that the poles are not center, as in stronger off to one side than the other. So that may be an issue.

Ive seen guys use a bunch of little magnets in order to try and recreate a large disk mag. But the reason it does not work is we need the magnet to be one piece. When the magnet is a big rin disk with a hole, like a speaker magnet, as the magnet spins on axis, the field doesnt spin or move in rotation with the magnet, so if the copper disk spins with the magnet, the field cuts the disk and you get output. Using a bunch of small mags to make the disk screws all that up.

Ill see if I have my old drawings of what I thought may work. It was alternating mag disks where there would be say a N/S pole ring magnet goes on the shaft first, then a copper disk, then another N/S magnet(in attraction to the first mag) then an iron disk and then a S/N magnet in repulsion to the second mag ring. The iron disk should capture the 2 S fields and direct them to the shaft where the fields have a path to the other poles without breaching the outside diameter. This way we can add another copper disk that carries current inward, where the first copper disk carries current outward. Then we can have a stack of mags n disks that we can make electrical connections from an out disk to an in disk at the outer edges which will give us a bunch of plates in series, in, out, in, out, etc to increase the voltage like more windings would do.

Mags

 

[Gothic]

The most important question is "Does magnetic field rotate with magnet or not?"

anyone tried this configuration?

Hello PolaczekCebulaczek

   I think this resembles what you have there, just applied in a differrent fashion.
   and a youtube video, prolly nothing new to the forum but interesting nonetheless.
     https://www.youtube.com/watch?v=gduYoT9sMaE

[minnie]

  Methinks it's all about frames of reference.

[PolaczekCebulaczek]

If the windings have more than 0deg angle, there should be something

i hope so...

the brushes its a thing, they are stationary ,they should be welded to the disk when everything rotates together, would be a current then?
if magnet spins and disk is at rest there is no current in disk so magnet field must not rotate with magnet right?

can you give my a schematic for simple amplifier that will light up a led when small DC current is detected? I will try to build this.

ceramic magnet is important because of this: (I also wish to see no brushes version, wires welded to magnet!)