A little offtopic but I need an advice.

How can I compute the length of coil knowing only resistance and inductance of coil ? Is that possible at all ? I have to measure exact length of secondary of my old Russian car coil and obviously I cannot dismantle it .
Yes - it is for 1/4 wavelength  to maximize vibrations I suppose ;D

You would have to consider things like:
1) The wire gauge
2) The shape of the coil
3) If the coil is actually multiple coils
4) If the coils are connected in parallel or series
5) The type of metal used in the conductor
6) The influence that surrounding materials have on inductance

How about this:
1) Look up a patent search for the old Russian car coil.
2) Call up the manufacturer.

OOOO


magic carpet ride ...

ist!

hover board anyone ... ?

Why do we use square wave???  So far triangle works the best for me but I don't have an oscope yet so I can't see what's actually happening.....even though I hook my TPU up differently every time 

duhhh.....You are seriously an idiot ...

nothing real to add here except insults?... whos the idiot.

duhhh.....You are seriously an idiot ...

said the idiot...

Funny how the wanna-be-troll shows up after I link specific field interactions resulting in electron drift and the TPU.  Not a peep for along time before that.

Whatever happened to "tsl"?

=======================================================

Anyway, you get electron drift from the interaction of a force such as "gravity" (which seems to be radial - hmm....) and a static magnetic field, or by the interaction of a diverging magnetic field (radial?) and a static magnetic field - provided you have free electrons/positrons available.

Now, what can you build that does this?

Its rather weird , I dont dont actually know why it is doing that , what is it sitting on EXACTLY .

But ... I can test it with pure luck .

Raffining that thing will be some  WORK however .

This needs a fast programmable microprocessor , I dont know that  however so I overcomplicate thing with analog .

Its all really interresting ... But it is beyond my current knowledge of calculations . This stuf is just a pain in the ass unless I get it all handed it to me.

You need to be clever to put it all together , not only electronics but knowledge of how the physics play out .
Gib me , impedance of all coils , core type , and frequency of operation of a working TPU .

My answer from other thread :
"I will tell you how in my opinion that radiant effect is produced. On a peak of DC impulse sent into transformer/coil ,magnetic field is collapsing and changing direction.In correct moment another DC pulse should be generated on transformer/coil  a little bit stronger that collapsing one.  In small amount of time those two fields look like a hollow sphere sound source because the collapsing field and increasing field nullify each other effects except small area far from the source (coil) when second impulse was stronger then collapsing one."

Hmm..compare it to that article.... very interesting

    Grumpy should enjoy this official verification that electric fields can move faster than the speed of light.  If we take a charged capacitor plate and move it towards a capactior plate of opposite charge how fast does the other plate know the first plate has moved.  Not the speed of the other plate but how fast does it recognize the other plates change in space.  Polarization currents are pretty darn quick.

 http://news.softpedia.com/news/Experts-Create-Radio-Waves-Traveling-Faster-than-the-Speed-of-Light-115431.shtml

@sparks

Yep, in a second take the sun out and pitch black will get here in seven minutes, but we will already have veered off our orbit the next second, same goes with Pluto and the rest of the gang. Oh, down boy. lol So how fast is that?

@otto

Good video. Thanks. I see the point of your video. If you were pulsing at 5000hz, I would understand that the coil would make nice whizzing sounds from internal loose coil wire vibrations, but at 200khz, seeing it move is very out of the ordinary. One would not expect that at such high frequencies.

@GK

Nice cake. Three series primary and secondary loops. Which is which? Is the primary the bottom round coils used to make a vortex field that impresses transfer around the vertical rising secondary, or, is the primary the vertical rising coil used to pulse one polarity through the bottom secondary to create a potential difference.

A side note.
Here is an image of a copper atom.
Seems to remind me of @Bruce_TPUs build and also in a way of your above photo. lol

I am worried that maybe Bruce is not getting the results he is anticipating and this may be due to the three windings meeting all three at the bottom, two in the middle and one on the top. Seems there may be some potential cancellation effect that would be going on if the timing is not perfectly matched to each coil set. The challenge will be to find the first two coil frequencies that will not cancel each other, then the added dilemma of finding the third that will not cancel one or both of the others. Add that to having the three coils at different total wire lengths and this is definitely not an easy puzzle to resolve. I imagine the lowest frequency would be the shortest wind and go higher from there for the others.

Also, I am thinking that if the three horizontal loops were in series, the total loop would undergo a difference in potential from the top (one vertical coil) to the middle (two vertical coils) to the bottom (three vertical coils) acting upon them.