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Author Topic: MAGNET SHIELDING  (Read 56695 times)

DeepCut

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Re: MAGNET SHIELDING
« Reply #15 on: April 09, 2010, 03:45:41 AM »
Hi Gwandau :)

I was in no way being skeptical, i agree with all you have said on this matter.

I responded before reading your post and then edited my post after reading yours because yours reflected the truth of the matter more correctly than mine.

And, yes, personal experimentation is the way forward i totally agree.

I just got my first Bedini circuit working, i'm also on the tech group for bedini monopole3 and they are fantastic for pure Bedini SSG, i'm so happy :)))


Happy (late night/early morning) experimenting :)



Rapadura

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Re: MAGNET SHIELDING
« Reply #16 on: April 09, 2010, 03:51:02 AM »
You are still confronted with the fact that the same attractive force that creates the movement
of the ball, also is responsible for the force that stops the ball and evens out the equation.

This setback to your concept has nothing to do with any inability to shield a magnetic field,
it is more a question how to harness the possibilities given by magnetic shielding.

Gwandau, but with magnetic shielding it is still impossible  to abolish "the force that stops the ball and evens out the equation"? I personally think that abolishing that force is the only way we can achieve perpetual motion.

Gwandau

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Re: MAGNET SHIELDING
« Reply #17 on: April 09, 2010, 04:31:44 AM »
Gary,

sounds great, and thanks for the positive response.

I will keep you all informed of my progress in my Perendev-type project.

At the moment it is a lot of initial field shaping configuration tests involved,
but when these are made, I am going to move in on the construct of my first test prototype.

Keep on the high spirits, the most important with it all is to have fun.


Rapadura,

As I said in the post before this one, a repelling system is the key.
You have to incorporate shielded magnets in both stator and rotor, and
you have to have three rotors parallel to each other with the magnets
offset some degrees to create rotation.

Personally I recommend to start experimenting with a Perendev-type magnetic motor,
since it seems to be the most simple way to study the repelling force of magnets.

Below is a link to a clip which probably is fake, but still very close to the concept
I am working on, so fake or not, it is instructive to see.

http://www.youtube.com/watch#v=FxReArGbE_s&feature=related

The simplicity in the idea of a repelling push in combination with correct shielding makes this a fully possible solution.

Gwandau


DeepCut

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Re: MAGNET SHIELDING
« Reply #18 on: April 09, 2010, 04:44:08 AM »
WOW Gwandau, a perendev !

I've always admired those, the Minato wheel reminds me of it what with the spiral arrangement and all.

Keep us posted plz :)


Gary.

Low-Q

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Re: MAGNET SHIELDING
« Reply #19 on: April 09, 2010, 03:35:20 PM »
Low-Q,

You are perfectly right in that Rapaduras idea will fail in its present configuration.

But I´m afraid your understanding of my shielding concept is flawed by a preconception.

The type of shielding exemplified incorporates a fully closed loop, its all about the reshaping of the  magnetic geometry,
leading the field into a current-like propagation through the ferrous multilayer.

This technology of altering a magnetic field by bending it into a constricted path is common orthodox scientific knowledge.

The trick here is not really shielding off one of the poles from the other, but instead by leading this field into a narrow path hidden behind the shielding properties.
And by only exposing one pole end area of the magnet to the surrounding, you still have a complete field interaction between north and south poles, but this north-south interaction is executed inside the shielded volume.

This way we have just confined the magnetic field to a more narrow path, and the exposed pole is still actively relating to the other pole,
we have just altered the geometry of the field structure, so that the electromagnetic visibility of one pole outside the shielding circuit is inhibited.

Additionally the use of bismuth or pyrolytic graphite is essential in the transition from the shielded path to the exposed pole area.

An example of this technology in action is The Wang Shum Ho prototype 5kW electricity generator which is reportedly powered by permanent magnets and claimed to be close to production. The team is seeking a marketing partner and offers a working prototype for viewing by financial backers.
Magnetic Shielding is used to create N pole Only magnets in this creation of Wang Shum Ho.

So on the contrary to your conviction, I believe shielding technology is the only way, all other ways are resulting in an even disposition of field vectors, resulting in zero output.

Gwandau
Your solution seems to be a better way of shielding. However, how do you manage to "tell" the magnetic flux to go inside a narrow path? Parallell magnetic lines are forced apart, so it will take force to compress them into a norrow path. Wouldnt the magnetic flux in your idea make a shorter turn so in fact less flux is exposed from the "open" pole - so much less as the shield can manage, and then we still have a regular magnet, but a much weaker one?

Vidar

Low-Q

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Re: MAGNET SHIELDING
« Reply #20 on: April 09, 2010, 04:27:11 PM »
I have a small tips to you:

Usually, all (maybe) attempts to make magnet motors is based on one or more single magnets in the rotor. Let's say we have one circular magnet, donut shaped, that is magnetized radially. If you can imagine this type of magnet rotating in a motor with shielded stator magnets (or you can imagine the opposite configuration). Is it possible this rotor can rotate, if so? If it is hard to imagine that this will work at all, it will probably not work with single magnets. Because the net magnetic field that is present in a single magnet is in sum a uniform none directional field for one complete revolution.

The magnetic field must be forced in one direction just like in those small neomagnets you see with single AA battery and a wire. The magnetic field that is built up in this wire is also passing the magnet to force the magnetism to be denser on one side to push the small neomagnet around - by adding energy. I cannot se that any passive magnet can manage to do this because both magnetic poles will interfere with eachother independent on which pole that is closest. All the magnetic lines will be taken into account even inside the shield, because the magnetism from the other moving magnet, or the magnetism applied to a steel ball, will follow the same magnetic path. Therfor it will not be possible to produce more force in one way than the other - my guess.

Vidar

Gwandau

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Re: MAGNET SHIELDING
« Reply #21 on: April 09, 2010, 09:56:07 PM »
Vidar,

thanks for your interest. As for the magnetic situation you described, the only way to really know
is to perform tests addressing accurately the specific electromagnetic obstacle, so I really don´t know.

The only thing I really have come to understand, is that the electromagnetic field still is a total mystery to mankind,
and that the absolutely latest theories about the opposite directional rotations of electrons in the crystal lattice structure of the magnet
still are not confirmed as the very origin of magnetism, just an interesting observation made by the scientists.

According to Stephen Hawkings, to apply electromagnetism into the Quantum Theory, one would need the concept of a strange loop of
so called virtual electrons making a field-transgression into an adjacent universe and back to explain the observed magnetic effects.

Personally I don´t believe the magnets themselves are the origin of their attractive properties, they may just as well be creating a response
to the condition of the Ether, acting as lenses by refracting the underlying field in a way that expands space between the magnets between
same poles, and decrease space between different poles of two magnets.

One thing is sure, magnets does not conform to the "Holy" Second Law of Thermodynamics, since you can have a car hanging by a Neodymium
magnet for years, and then by only applying a few Joule of energy in heating the magnet suddenly making the enormous energy applied by
the magnet into nothing, making the car drop to the ground.

And since we today really have no idea why a magnet attracts a piece of iron, it would be presumptuous to declare we have
covered the accessible possibilities known to interact and reshape the geometrical structure of the electromagnetic field.

The mystery of electromagnetism is still a white spot on the map, and we are a lucky bunch of guys exploring this uncharted realm.

So, my fellow explorers, lets do some fun experimenting with open minds and knowledge based on personal experience.

Remember, the more direct knowledge you attain, the more you realize how little you know, which is the very road to wisdom.

Gwandau





gravityblock

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Re: MAGNET SHIELDING
« Reply #22 on: April 12, 2010, 09:12:42 AM »
When will the world know a magnet that attracts steel balls only at one of its sides, and not at the other side? When humanity will discover the "unidirectional attraction" magnet?

The world has known it since 1973 (This is nothing new).  The effect was discovered by Mallinson in 1973 and is known as a Halbach Array and requires no shielding with a ferromagnetic material, http://en.wikipedia.org/wiki/Halbach_array 

Part 1 of the below video shows how a sphere is strongly attracted to one pole of the magnet, and has almost no attraction to the other pole.  One pole is external and is strengthened in a Halbach Array, while the other pole is internal and is nearly canceled to 0.

Part 1,  http://www.youtube.com/watch?v=zzV6vMG31Mc
Part 2,  http://www.youtube.com/watch?v=gwajrvMj5Ic
Part 3,  http://www.youtube.com/watch?v=3QYQMJSzlf4
Part 4,  http://www.youtube.com/watch?v=jVbMsFv7Gp4

You can even make a circular Halbach Array with different types of configurations.  Here is a simple configuration, http://www.youtube.com/watch?v=qv-9IAj_YnI

 
Here are a few of my videos showing how shielding works if properly done.  If you pay attention to the videos below, you will notice the screwdriver is not attracted and the field is shielded when you have 2 magnets with opposite poles attached to a ferromagnetic material.  When you have only one pole attached to the ferromagnetic material, then the screwdriver is still attracted to the metal, which means the field isn't being shielded.

http://www.youtube.com/watch?v=_81SxByRNR8
http://www.youtube.com/watch?v=aJFgMB5ezsE

As you can see in the above videos, a magnetic field can be shielded if done properly.

GB

Low-Q

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Re: MAGNET SHIELDING
« Reply #23 on: April 12, 2010, 05:50:42 PM »
You don't shield one pole, you end up with both poles on the same side. That is what the Halbach array do. It is no monopole. The same with the mu-metal piece you played with too I guess. Maybe I'm wrong, but I think strongly I'm right :)

mscoffman

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Re: MAGNET SHIELDING
« Reply #24 on: April 12, 2010, 07:15:34 PM »
« Last Edit: April 12, 2010, 07:45:16 PM by mscoffman »

Rapadura

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Re: MAGNET SHIELDING
« Reply #25 on: April 13, 2010, 02:35:30 AM »
So, could Halbach array do this?


Rapadura

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Re: MAGNET SHIELDING
« Reply #26 on: April 13, 2010, 09:58:18 PM »
So? Any guess about what happens when Halbach array attracts a steel ball inside a closed tube, so the ball can't move freely in any direction, but only back or forward in the tube?


Rapadura

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Re: MAGNET SHIELDING
« Reply #27 on: April 14, 2010, 02:21:55 AM »
No guesses?

Gwandau

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Re: MAGNET SHIELDING
« Reply #28 on: April 14, 2010, 07:46:19 AM »
Rapadura,

why not start doing some experiments? They are cheap and fun to perform, and will contribute to the rest of us.
Trial and error is the only trustworthy way in areas like this, and keep in mind that errors are important information
in all types of research.

I have attached two informative pdf-files about magnetic shielding.

Gwandau

Low-Q

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Re: MAGNET SHIELDING
« Reply #29 on: April 14, 2010, 04:45:50 PM »
So? Any guess about what happens when Halbach array attracts a steel ball inside a closed tube, so the ball can't move freely in any direction, but only back or forward in the tube?
Inside a halbach tube the magnetic flux is uniform. The steel ball is actually being forced all directions at the same time. There is no sticky spots. However, the tube is a finite thing that will pull the steel ball towards the walls if the steel ball is not in center of the tube. Because the magnets will find the ball as a short cut to close the flux loop.

Vidar