Stubblefield coils (bifilar) and speculations

[Localjoe]

Yes I know it. I use to live in the US but in Brazil they use individual wires and feed them through conduit. It's nice in that you can add wires later and change things around without tearing down walls. Maybe they also use romex in office building construction but in houses what is typical is one neutral and one phase and NO ground! Even all appliances you buy here don't have grounding. I wired my house with all american plugs with ground but not using romex. I wonder if there is any other application for bare copper wire. Bare iron was easy to find but all copper I can think of will have a plastic insulation. Well it should be easy enough with a good stripper to take it off.

http://www.amazon.com/gp/product/B00004W4Y3  Just a thought.

[jeanna]

This post is about magnetism and looking for/at magnetic fields.

It is my understanding that a magnetic field going first one way then "collapsing" and going the other way creates the oscillations and as a result of this change,  some current each time goes in opposite directions in or around the wire each time the magnetic field changes.

(Joe found this current as a voltage reading early on when he quickly shorted the wires.)

By putting a 3 volt NiMH battery on the various leads of our NS generator (NSG), I can see a very quick change of North-South on my compass.

If I switch the leads to the opposite direction on the NSG the compass will snap sharply to the opposite polarity.

So, I think this shows that the effect of switching polarities is there in the configuration of this device (NSG).

When the NS generator is wet, there is a constant polarity. It is a bit different  from the one using the external battery.

I am not going to describe how it is different because, what happens is that it stays the same once it is wet. This is the same thing that happens when I use an external battery. Once the polarity shifts, it stays and continues to go that one way.

All of this points to the reed switch or relay being the right way to procede.

MY question to everbody, is , Is there a better way to see what this is? more definitive, is perhaps what I am looking for. quantitative would be nice...

My uncertantity comes from my thought that there ought to be SOME reaction on a compass if the field is reversing.

But I do NOT see any change

If I short the wires the field should go the other way for as long as they are shorted.

But it doesn't.

Am I wrong about this? Should the magnetic field stay the same wether or not the wires are shorted?

Galvanic action creates magnetic field - mag field produces  (non galvanic) electric field - this moves strawberries and therefore produces a magnetic field.

This I just described, would not necessarily change the polarity while still using induction from galvanic to non galvanic electricity. This would make the moisture necessary, but produce a direct current.

Any thoughts?

jeanna

[Localjoe]

jeanna,

" it is my understanding that a magnetic field going first one way then "collapsing" and going the other way creates the oscillations and as a result of this change,  some current each time goes in opposite directions in or around the wire each time the magnetic field changes."

Almost but no cigar  .  The field has two poles relative to the direction you wound the coils and the polarity of the initial energy. So Think about it like this You Initiate the field by shorting the wires this creates a growing "donught/ sphere with hole in middle(vertical axis)" the poles are on the top and bottom of the holes.  When it collapses rapidly from making and breaking the connection it induces alternating current in the secondary winds.

Search static em field collapse and then search rotating em feild theres huge differences and this should be enjoyable reading for ya.
                                                                                                                Joe

[jeanna]

You Initiate the field by shorting the wires

When it collapses rapidly from making and breaking the connection it induces alternating current in the secondary winds.

                                                                                                                Joe

OK so

on - collapse - on - collapse etc.

but won't the magnetic field change each time it goes from on to collapse and back on again?

And, wont the strawberries move in the opposite direction every time the mag field changes?

And since I can see a change in the compass when It changes with the polarity change of a battery, then, I want to see a change on the compass when the field collapses because the wires are no longer shorted.

and I do not. (not even a twinge.)

jeanna

(hyperphysics at gsu is my favorite place to get me straightened out again when I am confused.)

[storre]

Reversing the polarity on the battery I don't see as the same as the MF collapsing. When you short the battery the energy is moving forward and then when you break the short (because of the magnetic field) then it bounces back but I wouldn't see that the same as reversing the magnetic field to the other polarity because you change the polarity by reversing a battery.

BTW, I think if you had a compass that would respond fast enough you would see it going to north and staying there because it's creating a right hand magnetic field and then collapsing (not reversing) the field. So it would go to north on the first shorting and then stay there on subsequent shortings.