PhysicsProf Steven E. Jones circuit shows 8x overunity ?

[hartiberlin]

Hi Dr. Jones,
great questions.

Well the first question is really hard to answer, you are right normally one should think
that the connection should break between ball1 and ball 2...

BUT I guess the flux is concentrated like in a lens from ball 1 into ball 2 and thus
at the contact point is a much higher flux density than at the magnet <-> ball conection...

Could also depend on the different material properties between ferrite and steel...

2nd question is easy to answer:
The LED flash comes from Russ putting in mechanical energy by his hand removing the bar
and thus causing a dphi/dt flux change in the core from the remanence field...

So surely the LED lights up from this flux change via induction then...
As energizing the coil produces a remanence Flux density Br in the core this
remanence field is easily able to stay for several years, if it is not broken
or heated or disturbed...
So this does not have anything to do with Perpetual motion... it is just the normal
remanence fields in steel that was generated by shortly energizing  the coils and then the domains in the steel flipped and aligned to generate this remanence field which attracts each other steel parts and as it is a closed magnet path it remains attracted.

There is nothing mysterial about it and it could be easily explained by normal magnet theory...


Regards, Stefan.

[d3x0r]

   
Please provide your explanations for:

1.  Two steel balls attracted by ferrite-magnets, I pull on the outer ball. 
Why does the inner ball go with the outer ball rather than staying with the magnet? 
(Isn't the magnetic field strongest at the face of the permanent magnet?)

Depends on the strength of the magnet.  I have an Alnico magnet and with 2 steel balls, the inner ball stays on the magnet.  I have some of the hematite magnets and the balls stick together, also ferrite speaker magnets the balls stick together (without a gap).  It has to do with the magnetic properties of the material.. similarly a neodymium magnet holds the inner ball.  (I tried quite a few sizes from 1"x1" cylinder, 3/8"x3/8" cylinder, and finally 1/8"x1/4" cylinder... in the case of the last one, the outside ball is barely even stuck to the inner ball... like the field doesn't even go through the 3/8" steel ball).... has something to do with flux density of the material I'd imagine.

2.  What lights the LED?  Researcher Russ Gries tests an Ed Leedskalnin device,
two years AFTER an electric current flowed in his two coils.
Notable experiment by Russ, pulling the "magnetically clampled" bar off the U and seeing an LED light brightly. 
Afterwards, there is no magnetic "sticking" of the bar to the U (not magnetized).
So -- what lights the LED? 

Breaking flux lines... much like solar flares, when the field lines snap... before there are stable structures that exist, but eventually the content of the plasma within the tubes exceeds the tube's strength and breaks the lines...(?)  How this relates to the actual structure of field lines I do not know; but hav e played with PMH's and they do last forever... and until the flux loop is broken it will hold firmly.


The PMH doesn't have to be a U and I, it can be 2 blocks, and a single wire through it... (image attached)  Not sure if the wire was left in-place (and if you could separate it) if it would light from the broken flux potential turned into kinetic...
https://www.youtube.com/watch?v=QJSDYYaF3LA&list=PLD98D8E671F5DDD8E&index=12


This is a more interesting magnetic flux effect... these videos would indicate that flux lines when bound can even be thread-like and wrap around objects.
https://www.youtube.com/watch?v=k1IDc9NWwRo&list=PLD98D8E671F5DDD8E&index=3
https://www.youtube.com/watch?v=NaiZRTSOKzc&list=PLD98D8E671F5DDD8E&index=4

[MarkE]

F follows B².  An air gap, ie the cardboard pieces make a reluctance gap that drops B big time, whereas the two balls do not have a gap.  If someone conducts an experiment where they can actually measure something violating established understanding rather than cursory intuition, then that would be remarkable.

Second video:  E = L*di/dt.  He has a big inductor capable of storing a lot of voltage, and energy.  A good sized flyback spike is completely ordinary and expected.

Third video same problem as the first:  Bad assumptions lead to bad answers.  It is not shown anywhere that the product of B² and area is higher for the ball that is in contact with the magnet than between the two balls.

As Stefan said:  Russ supplies the work.  The remnant field lines were broken and there was a fully expected voltage pulse as a result.  That the magnet remnant field largely demagnetized preventing a repeat on the same scale doesn't matter.  Neither does Russ's two fs, two s, two day or two year wait.

[JouleSeeker]

d3xor:

The PMH doesn't have to be a U and I, it can be 2 blocks, and a single wire through it... (image attached)  Not sure if the wire was left in-place (and if you could separate it) if it would light from the broken flux potential turned into kinetic...
https://www.youtube.com/watch?v=QJSDYYaF3LA&list=PLD98D8E671F5DDD8E&index=12


This is a more interesting magnetic flux effect... these videos would indicate that flux lines when bound can even be thread-like and wrap around objects.

Very interesting vids.  I wonder about the effects observed; more experiments needed.  That flux twisting is a surprise, with small permanent magnets.

...
As Stefan said:  Russ supplies the work.  The remnant field lines were broken and there was a fully expected voltage pulse as a result.  That the magnet remnant field largely demagnetized preventing a repeat on the same scale doesn't matter....

Wait -- this is really the crux of the matter, how could the U and I be "largely demagnetized" as observed? 
Others measuring show essentially NO magnetization remaining after the keeper is pulled off the U as shown.
Have you ever pulled a keep off a bar magnet and had both become "largely demagnetized"?   (I think not!)

[MarkE]

d3xor:
Very interesting vids.  I wonder about the effects observed; more experiments needed.  That flux twisting is a surprise, with small permanent magnets.


Wait -- this is really the crux of the matter, how could the U and I be "largely demagnetized" as observed? 
Others measuring show essentially NO magnetization remaining after the keeper is pulled off the U as shown.
Have you ever pulled a keep off a bar magnet and had both become "largely demagnetized"?   (I think not!)

With soft iron this is easy to do:  Magnetize with the loop closed, IE no gap.  The remnant magnetization will be quite good and remain so until a reluctance gap is opened.  Once the gap is opened the remnant magnetization collapses.  If you want to investigate this use a pair of windings as a transformer to determine the bias.