Turning on and off a Pernament Magnet Field

[valveman]

Imagine for a moment a thin material capable of enitely blocking the magnetic field of a pernament magnet.  You would now be able to control the magnetic flux.  Doing so would change how we build motors.  This would result is a truly Overunity motor.  Does such a material exist?  I don't know!  If it does, then think of the possibilities.

Something to think about and investigate.

Valveman

[Gregory]

Superconductive materials are exist.
If I know right the magnetic field can't go through these materials, and don't interact with them.
The problem is the operating temperature. At this time there is no published material, which works as a superconductor on ambient temperature.

[FreeEnergy]

yes i have been looking for the same info for my wheel project. no luck yet :/
http://www.overunity.com/index.php/topic,894.0.html

i am sure if i can turn on/off magnetic field i can make the wheel keep on self turning.

[valveman]

Lead is a very dense metal. Has anyone tried to see if the magnetic fields are attenuated in front of a small sheet of lead?  I have not tried this as yet but even if a small reduction in field intensity may be enough to overcome equillibrium which is the enemy of so many designs.

Valveman

[_GonZo_]

Magnetic "shields" exists, any diamagnetic material can be used as a magetic field.

Pyrolytyc graphite is probably the best diamagnetic material easy to find.
As well Bismuth is easy to find but not so diamagnetic.

Of course supercondctors are the big diamagnetic source but they have to be at cryogenic temperature to work.

Diamagnetic materials can be used as a magnetic shield, but actually they are not so, they just act like an inverse magnet, what I mean they are repeled from any magneic field independently if it is S or N so they just act like a reversed magnet in comparison to the magnet they are close to.
That means that althought they can be used as a magnetic field there is no posibility to create with them a diferencial in potencial in a closed system. (lets say a wheel with magnets and partialy "shealed")