An interesting Phenomenon in Magnetism

[vineet_kiran]

Video :

https://youtu.be/8NOQh9Xi3RQ


A magnetic void is created on a portion of inner hole of a ring magnet by absorbing North and South poles in that portion using small disc magnets having diameter equal to top and bottom surface width of ring magnet.

When a steel ball is kept in that void, it moves away from the void towards stronger flux area (attraction).  When small magnets are moved on the surface of ring magnet,  the void also moves making the ball also to move on the inner hole.

Very interesting thing here is, the motion of the ball does not exert reactive force on the moving small disc magnets.  It only tries to move away from the moving void on the inner hole.   Which means that the output energy developed by moving ball is independent of the input energy supplied to move the disc magnets.

If the disc magnets are mounted on a wheel and moved parallel to the surface of ring magnet without touching the ring magnet,  the energy required to move the disc magnets is almost negligible whereas the steel ball moves from void to stronger region with a huge attractive force.  The surface of the ring magnet should have uniform magnetic field in a parallel plane. If some portion of the ring magnet is stronger than the rest, then moving disc magnets experience force creating a sticky point. 

[Zephir]

When the steel is moving, then the magnetic field of ring magnet is redistributed. This change is relatively subtle given the relatively large volume of ring magnet, so it requires relatively small force. The relatively small redistribution of magnetic field implies relatively weak reactive force. But for to overcome this force the same work  must be still done - you just cannot note it. The force is still probably exerted, but it cannot overcome the friction between small magnet and large magnet. Because the small magnet doesn't move, you can get an impression, that no reactive force of steel ball is exerted.

In brief, the effect which you're observing is caused with dilution of magnetic field and their forces into a large volume.

[dieter]

Interesting video, thanks for sharing.

[vineet_kiran]

@Zephir,


When you keep steel ball on the inner hole of a ring magnet,  the North and south pole flux on the edges pass through the steel ball and get shorted.   It is same as flux passing through air but with different permeability.  It will not cause much redistribution of flux.

It is the small disc magnets which cause greater redistribution of flux creating void on a portion of inner hole and field gets redistributed above the disc magnets to a larger volume.

The reactive force of moving steel ball acts on the ring magnet which is kept stationary and hence the reactive force is absorbed making movement of small disc magnets independent of reactive force.  The disc magnets experience almost negligible force when moving in uniform field parallel to the surface of ring magnet.

Anyway, the forces have to be measured to prove OU.

[Hope]

Vin can you please draw each force you talk about on a sketch and maybe we can see magnetically what is happening.   Be nice if what you have could make magnetically what we now must POWER thru.   Vin what does a PMH   like Leedsskalion   look like under your panels?