Faraday's Paradox experiment

[gravityblock]

@broli:

I corrected the image so it will now have a voltage.  I can't believe I made that mistake in the drawing, LOL.  I moved both brushes to the right disc.  The wires will not rotate, they will remain stationary with the stationary disc and magnet on the left side.  I don't know what I was thinking.  This should provide a forward torque from the left magnet and a counter torque from the right magnet.  The end result would be equivalent to eliminating the counter torque.

Edit:  The orange wire on the right side should be pointing down and the purple wire on the right should be pointing up.  I forgot to make this correction in the image.

[gravityblock]

If you need me to upload a video showing it has voltage, I will.  I've already tested it.  My volt meter reads 3mv when I test between the rim of the stationary magnet and the rim of the rotating magnet with a nail connected to both magnets at the axis.  I'm only getting 3mv out of the system because of a low rpm and very small diameter neo magnets.   Voltage output is too low to determine if the counter torque would be eliminated or not.  I tried both the north and south poles of the stationary magnet and I received the same 3mv.  I have the same voltage in the system when I test between the axis and rim of the rotating conductive magnet without the stationary magnet. 

I have a resistor across the terminals of my volt meter to eliminate a false reading from my pc fan and other external sources.  When the terminals of my meter aren't connected, it shows 0 volts even in close proximity to the magnets.

[Grumpy]

As current flows through the stationary disc from axis to the rim, it will create a torque on the stationary magnet. 

What am I overlooking?

Are you sure the magnet will rotate?   It interacts with the magnetic field, not the magnet.

Why does the disk rotate at all?

What is a conductor, or a conductive disk?   

Is it somehow changed when placed in a magnetic field?

A magnetic field is a homogenous standing wave.  With a cylindrical magnet, the standing wave does not appear to change.  Why would it? 

You can create a comparable version of the Faraday HPG by rotating a dielectric disc, but you must take the current off with plates perpendicular to the disc and magnetic field.  This is known as the Wilson Effect.

The real trick would be to make a conductor or dielectric "appear" to rotate without actually rotating it physically, so that you get an interaction with the magnetic field and the generation of a current. 

To  do that we need to know what a conductor and dielectric really are and why homopolar devices work at all.

[gravityblock]

Are you sure the magnet will rotate?   It interacts with the magnetic field, not the magnet.

Current running radially through a disc will cause a magnet to rotate.  This is how a homopolar motor works.

Magnetic fields can move electrical charges.  Magnetic fields have a force on the moving charges (electrons) that make up the electric field in a magnet.  Magnetic fields do not have a force on other magnetic fields, they have a force on each other's electric fields which is made up of charges.

The magnetic field of the magnet doesn't rotate with the magnet, but the electric fields of the magnet and disc do rotate with the magnet and disc.  This is how a magnetic field can cause a magnet or disc to rotate.

The magnetic field of the magnet and the magnetic field of the current running through the disc acts on each other's electric fields which is in opposition to each other, thus a counter torque.

When a disc rotates through the magnetic field of a magnet, the charges are separated on the disc.  This sets up an EMF or static electric field in the disc with a force in one direction.  Since the charges aren't moving in the disc do to no return path, there is no magnetic field acting on the electric field of the magnet.

An external circuit provides a return path for those separated charges to move.  As soon as those charges start to move through the disc, the magnetic field created by those moving charges have a force on the magnet's electric field that is against the rotation of the magnet.  Increasing the amount of current moving through the disc will increase the strength of the magnetic field of the current providing more opposition to the electric field of the magnet, which increases the counter torque.

An induced magnetic field is always in opposition to the magnetic field that induced it, due to the magnetic fields acting on each other's electric fields or moving charges. 

GB

[Grumpy]

Current running radially through a disc will cause a magnet to rotate.  This is how a homopolar motor works.

Magnetic fields can move electrical charges.  Magnetic fields have a force on the moving charges (electrons) that make up the electric field in a magnet.  Magnetic fields do not have a force on other magnetic fields, they have a force on each other's electric fields which is made up of charges.

The magnetic field of the magnet doesn't rotate with the magnet, but the electric fields of the magnet and disc do rotate with the magnet and disc.  This is how a magnetic field can cause a magnet or disc to rotate.

The magnetic field of the magnet and the magnetic field of the current running through the disc acts on each other's electric fields which is in opposition to each other, thus a counter torque.

When a disc rotates through the magnetic field of a magnet, the charges are separated on the disc.  This sets up an EMF or static electric field in the disc with a force in one direction.  Since the charges aren't moving in the disc do to no return path, there is no magnetic field acting on the electric field of the magnet.

An external circuit provides a return path for those separated charges to move.  As soon as those charges start to move through the disc, the magnetic field created by those moving charges have a force on the magnet's electric field that is against the rotation of the magnet.  Increasing the amount of current moving through the disc will increase the strength of the magnetic field of the current providing more opposition to the electric field of the magnet, which increases the counter torque.

An induced magnetic field is always in opposition to the magnetic field that induced it, due to the magnetic fields acting on each other's electric fields or moving charges. 

GB

A magnetic field does move with a magnet, it just doesn't appear to rotate when the field is not changing.  Rotate a flat magnet on it's side and the field above it will change.

As for the magnet rotating when current is moving radially across the conductive disc, will it rotate if it is non-conductive?

Will the disc rotate with no brushes attached?

Doesn't the electric field from the center of the disc to the periphery polarize the disc radially?