Re: Sphere-in-Sphere

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

Original poster: "john cooper" <tesla-at-tesla-coil-dot-com> 

Hello Antonio, et. al.:

When you mentioned "two spheres almost touching to produce longer sparks", 
I'm trying to picture the electrical connections.  I imagine one sphere 
would be connected, as normal, to the secondary/extra-coil.  Now the second 
sphere, I'm thinking that one would be suspended or supported by some 
non-conductive means?  Maybe suspended with nylon fishing line?  That 
arrangement would make sense to me.  If they were close enough, maybe an 
inch or even less apart I would think their fields and therefore their 
capacitances would combine.  I've got to try that but does that sound like 
what you were thinking.

As far as the sphere-in-sphere is concerned, I'm beginning to believe that 
arrangement basically takes advantage of the empty space inside the larger 
sphere to accommodate another which results in their capacitances being 
added.  Now the twist in this is in Tesla's magnifier diagrams where the 
second sphere, which is above the first, not inside of it, rectifies the 
output.  I can usually work out these problems in my mind before I put 
pencil to paper but I've got some more work to do on this one.

John

---------- Original Message ----------------------------------
From: "Tesla list" <tesla-at-pupman-dot-com>
Date:  Wed, 31 Mar 2004 17:32:56 -0700

 >Original poster: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br>
 >
 >Tesla list wrote:
 > >
 > > Original poster: "john cooper" <tesla-at-tesla-coil-dot-com>
 >
 > > www.tesla-coil-dot-com/magnifier.htm  about halfway down the page.
 >
 >A very original coil, a magnifier with a double driver. Also the first
 >that I have seen with a carved support.
 >
 > > Also, I'm building a
 > > sphere-in-sphere-in-sphere and hope to have some photos posted soon.
 >
 >Have you tried a sphere besides a sphere, or two spheres separated by
 >a small gap? This trick works well for the production of long sparks
 >with static machines, and may work with a Tesla coil too.
 >
 >Antonio Carlos M. de Queiroz
 >
 >
 >