Newton's Magnets

[Low-Q]

Field gradients is the reason why the magnetic forces is present. A uniform field can't do that. At least one magnet needs a field gradient to operate.
Another important thing is how the field is polarized. Not as north and south, but how the field is oriented from its origin.
Think of a field as shells, like thin foils that is folded around the magnet. Two opposite poles or equal poles do not interact with eachother if the polarization is perpendicular to eacother. This can be seen if you put two long magnets, polarized throug thickness, an make a cross. Center-center will nor attract or repel even if both have a field gradient close to eachother.


I'm sure you guys know about magnetic field polarization. Not talking about north/south, but how these poles produce a polarized field that depends on the direction of the field gradients cross section.


Vidar

[Floor]

@ all readers

I just moved into a new home.  My life / organization is a lot to deal with at this time.  I haven't even finished the unpacking.  The new house needed work / was pretty much dysfunctional and is filthy.

It is one of my primary goals,  in the topics which I participate, to keep them as understandable to the general readership as I can.

I realize that it sometimes seem that I am talking down to other members, who are in some instances much more knowledgeable than my self.  Please don't take this personally.  I am almost always "speaking" in terms of as if many people were "overhearing the conversation".  Most of my actions / statement are very deliberate. My topics are not for the "experts only".
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The Newton's magnets design is a demonstration / explanation / teaching tool.  It neither puts out energy nor does it do work. 

It is some what, fascinating to see those magnets pass so smoothly past the other magnet or magnets (in the short video link above), while such a tiny gap exists between them.  The first page of the Newtons magnets PDF file, is title "BalancedSlide 1.PNG" and is attached below.
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The device shown in the "rack action 2 complete.PDF" (attached above), is like wise a demonstration / explanation / teaching tool.  Most people get  an ah ha / see what the hell is meant by "balance between attracting and repelling forces".  However, unlike Newton's magnets and when using ceramic magnets, I am quite certain that the device exhibits "O.U.".

This design has some limitations / imperfections.  These are as Lumen has described.  There is what I will call (as a simplificatin) an "over crowding in the magnetic field" especially at close proximity.

This does not significantly interfere with the insertion and removal of the shielding magnet
(different vector).   But does create an imbalance in force between the two "output magnets".  That imbalance is mostly present while all three magnets are in close proximity (shield is in).  That imbalance can also contribute to the closing of the gap, during the output magnets return stroke, I think?  This is IN PART due to increased domain flipping, pretty sure ? .....

One must look at the forces over the entire output and input strokes.  Not simply the peak forces while the magnets are in close proximity. What I mean by this, is that, this is exceptionally true of this design (the force / distance curve is oddball).

That undesirable imbalance does not exist once the shield magnet is removed.

That imbalance decreases as the output magnets depart from one another (shield is in) and it increases as the output magnets approach on another (shield is in).

Note  The "rack action 2 complete"  PDF does not make clear that each broad face of  the shield magnet, should have a surface area that is about 2 times the surface area of a single face of either of the output magnet's (also referring to the broad face).  I think / hope I mentioned this in another topic at the time of that files first posting.
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The device shown in the Rack Action 3complete. PDF is a variation of the "rack action 2 complete.PDF"  It addresses "over crowding in the magnetic field".
The magnet orientations are flipped as compared to the "rack action 2 complete"  PDF.

Note that the "rack action 3 complete"  PDF also does not make clear that each broad face of  the shield magnet, should have a surface area that is about 2 times the surface area of a single face of either of the output magnet's (also referring to the broad face).
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The "Magnet force shield repulsion.PDF" is also intended to address "over crowding in the magnetic field".

It also is capable a greater output force due to the direct pole to pole orientation of the output magnets.

My   build   of this design is still incomplete.  I will attach photos at a later point, maybe today.
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@ Vidar  I think you are on the right track.  Lumen should test neo magnets with  large faces on the broad sides (stronger although not higher grade), but also having thin thickness (weaker although not lower grade).
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@ all readers
I don't have the time and energy, to re post all of the above PDF files right now.  Search for them / most are already on this topic?

             floor

[Floor]

Here is the promised photo of the "Magnet force shield 1" build so far.

These are
1.the shield magnet array (polar checker board)
           and
2. one output magnet array. (two poles). 

These components will be mounted upon the sliding rails of the already existing, test bed.
90 degrees to one another and so on.

      floor

[Low-Q]

@Floor
You say you've moved into a new home (for some reason). Is everything OK? Are you OK? When people move, it is usually for a reason, so I just wondered if everything is OK


Vidar

[Floor]

@ LowQ

There was a death and the property where I have lived for the past several years was sold.

They say that in a hierarchical ranking of common and stressful life situations, that death, divorce and moving to a new home are at the top of that list.

The new place is actually a good space.  The house itself is not as big as the old place, but it is a nicer environment in so many ways.  Its just going to take some time to get it into shape.  I won't have a decent shop space for a while.  I'd sleep on a floor if that was what it took to have a good shop space !

  thanks for asking
       floor