RE: Experiment - Displacement Current's Magnetic Fields

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <twftesla-at-qwest-dot-net>

Hi Richard,

>At 11:06 AM 3/10/2002 -0500, you wrote: 
>3/10/02
> 
>Terry,
> 
>Cracking good experiment you've designed.  Good idea to put all other 
>magnetic fields at orthogonal angles to any measured dD/dT.    

Hopefully, the difference between one answer and another will be like night
and day and can be analyzed quantitatively.

> 
>What's the little hole in the middle of the capacitor plate for again?

To test the setup.  By shorting the plates (with a little brass screw in
the hole), the Rogowski coil can be calibrated and it can be demonstrated
that the setup really is capable of detecting the magnetic fields as
advertised.  If the result is zero, the first question is what wire did I
forget to hook up?...  I will also try to make the capacitor so it can be
rotated.  At a 45 degree angle the current should either measure 50% or
100%.  At a 90% angle, it should be 100% regardless of either theory.

> 
>Now Paul, Antonio, Ed, Matt (others) you have an opportunity to sign off  on 
> the design and theory BEFORE Terry's experiment begins.  No sniveling and 
>hedging after the fact.  What say ye?   Put your name down and post it to 
>the list.

Having been in many sign off situations, don't hold your breath :-))  What
I am looking for are terribly obvious flaws that someone may see.  My
assistant, Mr. Murphy, says it's "just fine" but... :o)  Scott's references
(he is sending them to me :-))) would suggest that some high-power physics
folks have already determined the answer will be zero...

I "was" planning some ways to measure streamer displacement currents with
Rogowski coils,  However, if this test comes up zero, those methods are of
no use.  Also Rogowski coils should offer a simple way for all these people
buying scopes to measure primary currents, so investigating them is useful
by itself.  "I" also use a Pearson current monitor too in the experiment,
but it is not critical at all and could be replaced with any current
measurement option.  Anyone should be able to reproduce such a test very
easily especially just at the qualitative level.  If I don't have the PC
board material here, it will take me a few days to get the experiment
together.  So someone may beat me to it ;-)

"Maybe" it will also show the kind of experiments that tend to convince
everyone.  Clear, simple, based on solid principles, easily reproducible,
and with clear results.  Of course, if the current measures 50%...  :o))))

Cheers,

	Terry

> 
>RWW
> 
>>Hi Antonio, Richard, Paul, All,
>> 
>>Going off Richard's original idea but correcting for obvious problems, I
>>would like to propose an experiment to test for magnetic fields caused by
>>displacement currents.  I wrote up my notes and posted than at:
>> 
>>http://hot-streamer-dot-com/temp/DCtest1.jpg
>> 
>>http://hot-streamer-dot-com/temp/DCtest2.jpg
>> 
>>Basically, it is a 6 inch diameter disk capacitor made from double sided PC
>>snip...