Magnet Myths and Misconceptions

[MarkE]

@AC - Very Nice! You are quite possibly the most logical person on OverUinty.com!!!

I agree with nearly all you have said. I too don't disagree with all of what they have written. I agree that Magnetic Flux of opposite Polarity's attract each other. Facts are Facts, Magnetics are still Magnetics. I am not claiming anything that is not already been brought forward by others!

I am sure no-one disputes the Fact that the Earth has an Equator because of its Magnetic Field?

The earth's equator is a result of the tilt on its axis.  It is only a convenient navigation circumstance that the earth has a magnetic dipole somewhat perpendicular to its equator.

I said:

ANYTHING that Constitutes a Lack of or Change of the conditions seen at each Pole, between the Poles of a Permanent Magnet, is a Bloch Wall or more commonly known as an Equator!

This is yet another worse than wrong statement from your put on act.  Bloch walls are transition regions between adjacent unaligned magnetic domains.  They don't have anything to do with the earth's equator.

This statement agrees with all you have said! At the Poles we have a Flux Polarity, like you pointed out! Flux Density is clearly much lower at the Equator, I pointed this out earlier on, approximately 70% just in the average Iron Filing picture.

It doesn't matter about anything else other than the Magnetic Field, it is this, that is the topic!

I agree here, the problem is that most of my "Critics" believe each Flux Line to be a Piece of string, strung between the poles!

Most people here understand that the magnetic field extends contiguously through each of the two poles of a magnetic dipole.  Would you like a link to the Lewin lecture on the topic?

We are seeing a very basic approach to a something that needs a bit more thought! It is basic and no doubt something that can be easily deuced by some hard work. The problem is that it should not be taken for granted and assumptions only get people into trouble!

The delusions you promote are about as bad as itcan get.

Magnetic Monopoles were predicted by Paul Dirac in 1931. Synthetic Monopoles have been created in the Lab: https://www.youtube.com/watch?feature=player_embedded&v=HSDoIf5FY2s

Here in lies an amazing fact, a singular North Pole can exist with no corresponding South Pole, the same is true in reverse. It is Fact that a polarity of the pole exists! Weather this polarity is a Spin based phenomena is another debate.

By definition a dipole has two poles, placing your digression into the subject of monopoles a moot distraction from the topic of how fields distribute through and around the poles of a dipole.

AC, this is correct! All I have shown with the Ferrofluid shows this with no doubt to normal individuals with the slightest common sense!

Again this is all Logical!

If you think that your insisting on claims that your own evidence refutes is logical:  then have a party.

Again this is all Logical! Again common sense!

I think this is incomplete, however! For example, ferromagnetic material can carry Flux in more that one direction, even when one direction is saturated already.

For example, take two Neo's, one length of Iron bar, Place the Iron Bar between the Neo Magnets, in attraction mode so the Flux would conventionally be entirely contained in the lower Reluctance medium, being the Iron Bar.

Iron has high permeability.  It is not infinitely permeable.  It never carries all the magnetic flux of a magnet.  It can carry a high percentage of it.

Here in lies my problem, Magnetic Field Lines do not always curl back to the opposite Pole!

They do if there is not another magnet of sufficient strength nearby.

Even Iron Filings show a 70% loss and Iron has a permeability of 1000 depending on the composite...

We have issues, issues with the Magnetic Field not doing what conventional science thinks its supposed to do.

Whatever issues you have they are far more with you than they are with conventional physics.

Magnetics says Magnetic Field Lines are always on enclosure on them selves, but we can see this is not the case. Conventional Science is incomplete! The answers are out there.

There it is:  The argument from ignorance.

Kind Regards

  Chris

[NoBull]

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[poynt99]

I have answered your questions, maybe you could be so courteous?

Actually, you've answered only one of my two questions, and there would have been a third coming. But you have elected to derail our discussion.

But for the record, no I do not subscribe to your theories.

[NoBull]

@allcanadian

You are confusing the concept of magnetic flux density (a.k.a. "field") with the concept of force that this magnetic field exerts on ferromagnetic objects.

The force is proportional to the gradient of the magnetic flux density (field).  This force is not the field!

If you map the force exerted by a bar magnet on other ferromagnetic objects in its vicinity then this force disappears near the midpoint of the magnet ....but a high magnetic flux density ("field") can be still detected there.

This can be easily seen when a magnetic viewing film is put perpendicularly to the bar magnet near its midpoint...the film changes color there even when an iron ball does not experience any net force there, parallel to the bar magnet.

A Hall effect sensor indicates a strong magnetic field near the midpoint of a bar magnet despite the lack of a force on an iron ball placed there.

[itsu]

.........

A Hall effect sensor indicates a strong magnetic field near the midpoint of a bar magnet despite the lack of a force on an iron ball placed there.

NoBull,   i tried that, but i can not confirm it 

the output of the Hall effect sensor UGN3503UA  shows a dip in the magnetic field near the midpoint of a bar magnet.
It shows what Tinman describes as a peanut shape field.

I think the field at the midpoint is spread out so much (like a sphere) in the midpoint causing this dip. Right?

The field polarity all along the magnet was the same, so starting left as north, it stays north all the way (with the dip in the middle) to right.

Or is my Hall sensor balancing itselve between the both poles?

Please if possible, try  this simple test yourselve.


Regards Itsu