about the Ferrocell (ferrolens)

[bistander]

Halbach array

Nice cell, dyetalon. Did you have them arranged so:



From: https://www.kjmagnetics.com/blog.asp?p=halbach-arrays

Regards,

bi

[dyetalon]

Nice cell, dyetalon. Did you have them arranged so:



From: https://www.kjmagnetics.com/blog.asp?p=halbach-arrays

Regards,

bi

Yes. And if you look closely at the cell pix, you can clearly see where the poles are.

Funny, they look more like vortex's than poles...

[bistander]

Halbach array

Yes. And if you look closely at the cell pix, you can clearly see where the poles are.
...

It appears that you have cube magnets in a plastic holder that spaces them apart. I've seen these mostly for circular arrays using cube magnets.

Halbach arrays have a strong side. It looks like you have that side facing up against the bottom of the cell. I believe that is the reason for the symmetry. All the simulations are done from a side view showing asymmetry.



As usual, the cell has lines circling the poles whereas the femm has the lines exiting the poles.

Regards,

bi

[Markoul]

You cannot treat the dipole as if it were two monopoles.

I actually can. That is exactly what it is!

EM

[Markoul]

Let's compare a recent pix I took of a small linear Halbach Array.
I used one of my new formula cells (509-1) with a RGW light ring:



Compare it to what iron filing do:



The cell shows the top view of the array and the filings show the side view.

Notice the difference? See the similarities?

WOW! IMPRESSIVE!! HOW THE **** DID YOU GET THIS PICTURE? THIS IS IS THE FIRST 100% CONCLUSIVE SIDE VIEW OF THE FIELD FERROCELL PHOTO OF A MAGNET. PERIOD.

IS 509 THE WATER BASED FERRO OR THE 5nm?

Regards,

EM

[Markoul]

... oops sorry I just noticed that you said the top view, strong pole side of the Halbach array.

Doesn't really matter, the strong pole side of a Halbach array between two of its pole actually emulates the side field of a dipole magnet.

Can you also maybe take a picture of the side view of the array? (i.e. not the weak pole field side of the array)

EM

[dyetalon]

... oops sorry I just noticed that you said the top view, strong pole side of the Halbach array.

Doesn't really matter, the strong pole side of a Halbach array between two of its pole actually emulates the side field of a dipole magnet.

Can you also maybe take a picture of the side view of the array? (i.e. not the weak pole field side of the array)

EM

This image is with my new 509 mix. I'm not going to reveal the exact combination, but it is not water-based or 5nm particles.
Lets just say is similar to mouse milk, but doesn't evaporate as quickly.
I'm still perfecting it, and each batch is a little bit better than the one before.

I'll image my little Halbach array on the side, so everyone can compare with the filings and post the pix later.

[bistander]

Check please

...

I'll image my little Halbach array on the side, so everyone can compare with the filings and post the pix later.

Hi dyetalon,

Can you check and verify the orientation of the magnet on the right end of the array in this photo? If possible maybe take a photo prior to covering with Fe powder showing each cube's vector.

Edit #2: Nevermind. I think I ran across the source. It appears there are only 4 in that array.

Ref. Ian's Magnetics: Halbach Arrays



Thanks,

bi

Edit: part 2 of the KJ link which I posted yesterday. Re. Halbach arrays.

https://www.kjmagnetics.com/blog.asp?p=halbach-arrays-2

[dyetalon]

Hi dyetalon,

Can you check and verify the orientation of the magnet on the right end of the array in this photo? If possible maybe take a photo prior to covering with Fe powder showing each cube's vector.

Edit #2: Nevermind. I think I ran across the source. It appears there are only 4 in that array.

Ref. Ian's Magnetics: Halbach Arrays



Thanks,

bi

Edit: part 2 of the KJ link which I posted yesterday. Re. Halbach arrays.

https://www.kjmagnetics.com/blog.asp?p=halbach-arrays-2

Any Halbach array is a complex arrangement of magnetic spins.

Keep that in mind when you view this image I took this morning with the same array I used in the first pix.

This is a side view with the two inner poles facing up.



Where the cell shows activity, the iron filings show nothing but space

[dyetalon]

It appears that you have cube magnets in a plastic holder that spaces them apart. I've seen these mostly for circular arrays using cube magnets.

Halbach arrays have a strong side. It looks like you have that side facing up against the bottom of the cell. I believe that is the reason for the symmetry. All the simulations are done from a side view showing asymmetry.



As usual, the cell has lines circling the poles whereas the femm has the lines exiting the poles.

Regards,

bi

That's the difference between minimum and maximum potential views!
I'm repeating myself here. Same thing, inverse view...

You don't see any detail with the filings, because the outer portion of the field is covering the inner portion.
And they can't resolve spatial details. Too bad all of the simulation software uses the filings view instead of the cell view.
But hey, a computer can't do anything more than it's programmed to.
The cell just 'is'.

to be clear:



Can anyone identify the strongest section of the field from the iron filings pix?
How about with the Ferrocell pix?
Pretty obvious, eh?

Comments please !

[bistander]

Halbach Arrays

Comments please !

Hi dyetalon,

Modified a couple images. Will add comments in a while.





Regards,

bi

[dyetalon]

Hi dyetalon,

Modified a couple images. Will add comments in a while.





Regards,

bi

Before you go any further, let me apologize for not clarifying which end of my Halbach array is up and which is down. The bare magnet side is the weak surface and the plastic covered side is the more focused and powerful side.
The 'curls' in the above pix are the weak side where the field is folding in on itself.
The extended light bands are the strong side of the array.
Sorry for any confusion.

You need to flip the FEMM graphic 180 deg. back the way it was

Oh, and here is an up-dated pix comparing the array weak side and strong side:

[bistander]

Which side



Hi dyetalon,

Brings up a question. Using the above image, how can you tell which side of the Halbach array is stronger?I

Regards,

bi

[dyetalon]

Hi dyetalon,

Brings up a question. Using the above image, how can you tell which side of the Halbach array is stronger?I

Regards,

bi

The 'bands' on the bottom extend a greater distance from the magnet than the top bands do. Long bands are the stronger side.
When I imaged that array under the cell, it was quite obvious which side was stronger. The bands were 'coming out of the page' compared to 'curling down'.

Seeing it in real-life is very different than a 2-D image.

[Markoul]

Magnetic Charge Theory—The Unification of Gravity with Electricity and Magnetism

Very important new published paper:

Magnetic Charge Theory—The Unification of Gravity with Electricity and Magnetism


https://file.scirp.org/pdf/JMP_2018060615354080.pdf


It's from my friend Keith Lyon (you can find him in research gate)


EM