about the Ferrocell (ferrolens)

[Selfsimilarity]

That should help to visualize what you are referring to ;D
It seems to me as if the opposed spin of permanent magnetic field is missing when electric current is flowing through coil

[Markoul]

Bravo SSML!

Beautifully presented.

You nail it!

Of course that was also the reason when the magnet was placed inside the coil with opposite facing polarities it was knocked out in many cases by the coil's field transient turned on.

knowing by the right hand rule and conventional flow of current we can now predict the polarity of the magnet inside the coil. Left picture (attraction) the poles of the coil and magnet are aligned with the same polarity whereas in the right picture (repulsion) the poles are in reverse. Finding out with right hand rule the polarity of the coil and observing the pattern in the ferrocell we now can say which pole is which for the magnet placed inside.




EM

[bistander]

Notes on the coil

That should help to visualize what you are referring to ;D
It seems to me as if the opposed spin of permanent magnetic field is missing when electric current is flowing through coil

Interesting how on the bottom image of the ring magnet alone, the lines of light outside the ring appear hyperbolic in shape touching the magnet as like a tangent. But in the upper two images where the ring magnet is inside the coil, the lines of light appear outstretched from the outer ring diameter almost on a radii trajectory. Maybe an orthogonal difference between w & w/o the coil.

And on the video https://tinyurl.com/yckkesev

Notice there are no lines of light on the ferrocell inside the coil when it placed on a fresh ferrocell. Seen around time stamp 3:10. However there are visible lines after the magnet is removed, around 5:40.

Regards,

bi

[Markoul]

It seems to me as if the opposed spin of permanent magnetic field is missing when electric current is flowing through coil

No that's just an intrinsic property of some Brian's ferrocell's which makes them very thick and also because the ferrocell here is square.

[Markoul]

bi,

The field of the coil is very weak and needs more time to develop. The magnet initially put inside the coil helped to give an early kick on the ferrocell an activate it.

EM

[Selfsimilarity]

Markoul,

I expect 1-directional spin for electric coils due to this phenomena

When you electrify a permanent magnet under water, you see spin and vortex dynamics. *The opposed spin present as seen with permanent magnet and ferrocell is de-equilibrated.*

Therefore, to me it occurs as if you need to collapse 1 of the opposed spins to at least a certain degree to create the electric flow and resulting spin in one direction

[Markoul]

SSML,

Yes I understand that you expect to see parabola lines, arcs, vortex flux lines thus skewed flux on the pole.

And you don't see them in the Brian's coil experiment but this is not due to what you think but an intrinsic property of the type of cell Brian's is using. Thus acrylic very thick ferrocell. There many videos from Brian made with permanent magnets and ferrocell showing the same effect. I have noticed this early and asked him. Also he is placing the light ring further down in the ferrocell:

[VIDEO]https://www.youtube.com/watch?v=gRSuGkOqyjM[/VIDEO]

EM

[Selfsimilarity]

I see what you mean EM,
We will need more power to see the full picture.
Ordered my 60V 5A powersupply today, arriving tomorrow Then I will join the party of investigating permanent magnetism interacting with electromagnetism! Cant wait

[bistander]

Air core coil

I see what you mean EM,
We will need more power to see the full picture.
Ordered my 60V 5A powersupply today, arriving tomorrow Then I will join the party of investigating permanent magnetism interacting with electromagnetism! Cant wait

Hi Self,

To fully use utilize the power supply, you need a coil having a resistance of 12 ohms. A quick look at a copper wire chart indicates that would be about 750 feet of #22 AWG. Suggest using magnet wire, that is what they call film insulated solid copper wire intended for winding coils used for magnetics and inductors; motors, relays, transformers, chokes, etc. Make the coil size such that you maximise the number of turns.

Hope to see some interesting tests.

bi

[Selfsimilarity]

Thanks for the advice Bi Will follow it. But generally, as Brian showed, any wire should be usable.

[bistander]

Any wire

Thanks for the advice Bi Will follow it. But generally, as Brian showed, any wire should be usable.

Sure any wire formed into a coil with current flowing will produce mmf (Ampere Turns). And that will result in magnetic flux. But having an air core means a very high reluctance path (magnetic circuit). So to get the most flux you need to use all the available power to produce the highest mmf. That is 300 watts (60V * 5A). Brian's coils may have only been, say, 2 ohms, in which case the power supply would current limit at 5A and 10V producing 50 watts in his coil.

300 watts is pretty healthy and the coil will heat up. Magnet wire insulation is typically rated for 200°C or higher. But if it get too hot to handle, you can always reduce the watts by increasing the number of turns using the same wire gauge. This doesn't affect the mmf. Going the other way doesn't work due to power supply limit.

You'll always have trouble getting a strong field from an air core coil unless you get into quick pulse current, active cooled conductors, or even superconductors.

Regards,

bi

[Markoul]

Coil for ferrocell experiments specifications

I see what you mean EM,
We will need more power to see the full picture.
Ordered my 60V 5A powersupply today, arriving tomorrow

SSML,

5 Amps are to little.

the field inside the coil is given by the formula:

B = μο (Ν/l) I

where N is number of turns and l, the total length of the magnetic wire (insulated copper wire) used to make the turns and I is the d.c. current through the coil, μο is the magnetic permeability for air (for non-core coils) at 4 π 10^-7. The denser the coil turns and higher the current I the stronger the field B inside the coil. The most effective coil for ferrocell observations is the coil made by Brian which will not obscure the view. Also the closer the coil to the ferrocell, when standing up (which permits to see a side field view) the better, since increase of the coil's air cap area will decrease the inductance of the coil and therefore the strength of the field, you don't need really a coil more than 2-3 cm inner diameter.

You have to trade-off the wire thickness used for maximum number of turns for a given length with the maximum current capability of the wire before it blows off. Also you can NOT have prolonged viewing sessions with ferrocell, things will get very hot!

So for example the AWG 27 magnetic cable has a maximum current at 17 Amps (for 10s before it blows off) and is 0.361 mm thin, so this will allow you tom make about 400 turns on a 1cm space and as long you regulate the voltage from your power supply for a current of say about 10 Amps you should be fine even for prolonged periods (well not more than 2 min each time).

https://en.wikipedia.org/wiki/American_wire_gauge

https://www.ebay.com/itm/0-35mm-20m-...-/301149980045

Example of B field strength calculation:

So for example fro N= 400 turns and inner diameter of coil d= 2 cm we get length of wire used l = 400 *(πd) = 400 * 3.14 * 0.002 = 2.5 m (you can overlap the turns to make the coil more compact so it will not obscure the view).

Thus for current regulated at I= 10 amps gives,

B= 4π 10^-7 (400/2.5) 10 = 2 mT = 20 Gauss for our air cap coil.

This is too low to activate the ferrocell which needs at least a 100 Gauss value for the EFH1 ferrofluid. Brian with the two parallel 9V alkailine batteries don't be surprised that he achieved currents of 20 Amps for a small time before things get heated and resistance of the wire increases. The trick also he did to preactivate the cell with a magnet was good.

I suggest a 2000 turns coil with no more than 1 cm total coil length and 2-3 cm inner diameter using a AWG27 magnetic wire and a power supply regulated at 10 Amps. This of course will mean that outer diameter of coil will increase significantly use a plastic frame spacer to wind the coil. Again we are interested for the side field view of the coilbecause there we would observe both poles of the coil and if it has a dielectric plane. So a special ferrocell must be constructed.

You can also use this online calculator to calculate the B field and inductance of your coil made (leave permeability at default value given for air):
CalcTool: Solenoid properties calculator

Putting a ferromagnetic core or a ferrite core inside the coil (i.e. electromagnet) will increase its field strength dramatically but then you will see the same pattern as a normal bar magnet. We really want to see the field of of the coil without a core which will allow us to make better comparisons between the field of a permanent magnet and an pure electrically induced magnetic field.


That's all.


EM

pole of air caped coil shown by the ferrocell

[Markoul]

Circular Magnets full with magnetic monopoles?

That's true magnets attract each other (counter poles) but never really merge their fields. They are tangent. The best example of this is the poles of the magnet with the Bloch domain wall in between. I keep saying it, there is no difference between the attracting poles of two magnets with the attracting poles of one magnet.

As soon the two opposite polarity monopolar fields joint a Bloch domain wall is formed at their contact (assuming these fields are the same strength).

One way to separate the magnetic monopoles and prevent them to form dipoles would be maybe to put then in a magnetic loop, circular concentric magnetization thus creating a circular magnet. In that way the monopoles inside the material will endlessly chase one other in a loop without possible to join.


... more to come in a few days.


The only hint I can give you right now it has to do with Edward Leedskalnin PMH... its behavior is anomalous at least.

http://www.pateo.nl/HTML/PD/TP/Magne...eedskalnin.pdf

[Selfsimilarity]

Awsome literature EM
Thanks for the link.
Where did you dig that out?
It fits the opposed spinning concept we observe using ferrocell.
Nature's fundamental

[Markoul]

Awsome literature EM
Thanks for the link.
Where did you dig that out?
It fits the opposed spinning concept we observe using ferrocell.
Nature's fundamental

Well Ed is the inventor of the PMH:

[VIDEO]https://www.youtube.com/watch?v=rWxNlPnwHtw[/VIDEO]

There are more things going on here of what we think.

Circular concentric magnetization exhibits some strange phenomena.

It requires very little energy to magnetize a metal loop and magnetization exists as long the loop is not broken. When the loop is broken almost all residual magnetism of the individual parts is lost.

Hear what this guy is saying about magnetic monopoles, electricity generation and his explanation for Ed's PMH:

[VIDEO]https://www.youtube.com/watch?v=C3DD33ZZ6Co&t=[/VIDEO]

Electric voltage potential is generated by separating these omnipresent magnetic monopoles on a coil using a magnet whereas electric current is produced by recombining these magnetic monopoles on the coil. Amazing explanation.

Ed's PMH explanation:

[VIDEO]https://www.youtube.com/watch?v=H5q-LOhBHSI&t[/VIDEO]