O.U. Magnet force shielding 1

[Floor]

partial quote

... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
When the shielding magnet is positioned / optimized (up and down) for
        VERY NEAR TO ZERO INPUT AGAINST  MAGNETIC FORCE
during insertion and / or removal...   

There is a repulsion force present (at the distal range of travel) while the shield
magnet is in place.  This force gives rise to the need for an INPUT in order to return
the out put magnet to its start position.
              but...
That force reverses direction (changes to attraction) as the OUTPUT magnet becomes
near to the shield magnet.
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
When the device is operated such that the output travel range is limited to around 5/8
of an inch, output occurs when the shield is removed and then again when the
shield is restored.

There is a repulsion force present (at the distal range of travel OF THE OUTPUT MAGNET)
while the shield magnet is in place.  This force gives rise to the need for an INPUT in order
to return the out put magnet to its start position.

[Floor]

@ Norman6538

Leedskalnin has said that north or south magnets push more than south which means the forces are not equal.

again no / not that I am aware of...

but in general...

Attraction forces are dominant over repelling forces when both are at close distance.
Repelling forces are dominant over attracting forces when both are at far distance.

At some range of distance between near and far they are equal.
That neutral  / balanced range of distance varies in one given and particular kind of
magnet arrangement from,  some other given and particular kind of arrangement.

[Floor]

Excerpt from page 152 of the magnet basics PDF.
@ https://overunity.com/18511/floors-magnets-explained/dlattach/attach/175992/
   beginning of the quote
In some circumstances, we find magnetic attractions are greater than repulsions. This is the case
when an unmagnetized or nearly unmagnetized iron object is attracted to a permanent magnet.

In some circumstances, two permanent magnets will stick together like face to like face, N to N or
S to S. This occurs when a powerful neodymium magnet is brought into proximity with a much
weaker ceramic type magnet. At a certain distance the magnets are powerfully repelled, but as
they are brought nearer, a sudden change occurs and the two magnets become attracted and
stick to each other, like pole to like pole.

Under other conditions, I have found a magnet's repulsion to be greater than attraction.

Using a permanent ceramic magnet at a fixed distance (15 inches) from the center of a magnetic compass. The magnet was orbited from due magnetic south of the compass to 50 degrees off,
in 9 increments of 5.5 degree while a single pole faced the compass. At each 5.5 degree
increments the needle deflection was noted. Average deflection by attraction was 2.2 degrees. Average deflection by repulsion was 4.6 degrees. The test was repeated using a similar magnet. The average deflections were 4.2 degrees by attraction and 8.6 by repulsion. The magnets each measure 3/8 by 7/8 by 1 7/8 inches. Poles are on the broad faces.

In yet other conditions the difference between attracting force and repelling force is negligible.
One cause of the difference between attractions and repulsions is as follows.

When two magnet are facing like pole to like pole, each magnet is exerting a force which is to
cause the magnetic domains in the other magnet to rotate toward a reversed polar direction.
So reversed, those domains would be aligned with the other magnet's polar orientation. If a domain within a magnet is completely reversed, that magnet is permanently damaged /
weakened.

If instead of a complete reversal of direction, only a partial deflection has occurred, then in the absence of the other magnet the domains may spring back to their original orientations and the magnet is unharmed.
  end of the quote

edit / addition here

This might be described as if while at near distances, each magnet is acting to either,
de-magnetize or further magnetize the other magnet.  Note this is a physical change in
the actual magnets their selves.
... ... ... ... ... ... ... ... ... ... ...
A couple of other reasons for the difference.

1. Especially when using a magnet in which its N and S poles are near to one another
(example.. wafer magnets with N and S poles on the broad faces).

In interactions with another magnet,  the wafer magnet's own N S poles may be nearer to one another than they are to either of the other magnet's poles.  A SELF SHUNTING will cause the force
from the wafer magnet to diminish rapidly with distance.

If instead of a wafer magnet, a long bar magnet is interacting , (with its poles at the ends)
the magnetic force will diminish less rapidly with distance than in the case of the wafer magnet.
The force diminishment per change in distance from a long bar magnet can be surprisingly   
gradual.

2. Back side faces of thin magnets may become interactive to other thin magnets at close magnet  proximity.

For a demonstration see this vid @ https://www.dailymotion.com/video/x7f0md2

That's all for now.
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        floor

[Floor]

MagnetForceShield 1
         @
https://www.dailymotion.com/video/x728wd9
   and
MagnetForceShield 2 06 2 2021 ( sorry, video should be labeled as MagnetForceShield 1 06 2 2021
         @
https://www.dailymotion.com/video/x81ld01

              best wishes
                          floor

       PS
     notice that the divide / junction between the two magnets combined on edge,
     in repulsion (as the shielding / shunting  magnet) are not the same in the two videos.
     in one video the junction is vertical, in the other video it is horizontal.
                 also
    My shield magnets were not well matched in some of the test I ran.  This profoundly
   effects outcomes / can cause bad results, especially when that junction is horizontal.

[Floor]

continued
   partial quote

               
1. Especially when using a magnet in which its N and S poles are near to one another
(example.. wafer magnets with N and S poles on the broad faces).

In interactions with another magnet,  the wafer magnet's own N S poles may be nearer to one another than they are to either of the other magnet's poles.  A SELF SHUNTING will cause the force
from the wafer magnet to diminish rapidly with distance.

If instead of a wafer magnet, a long bar magnet is interacting , (with its poles at the ends)
the magnetic force will diminish less rapidly with distance than in the case of the wafer magnet.
The force diminishment per change in distance from a long bar magnet can be surprisingly   
gradual.

The above describes a behavior, but does not explain why attraction or repulsion is
dominant in a given condition. It is incomplete in that context.
                      So
In continuation...

This is a builders board, and I might already be straying too far from that description
and purpose. 

In these descriptions of magnet interaction, I generally try to stay away from the theoretical
and instead focus on things which I can demonstrate and measure. This is one of the reasons
I tend to avoid descriptions through the use of the convention of magnetic lines of force and
magnetic flux density.  I'm not going to make an exception here.

However, I will work on this continuation and at some point, present it in the
"Floors Magnets Explained" topic.

   floor