Re: Tips on capacitor and toroid design

On Tue, 5 Jan 1999, Tesla List wrote:

> Another interesting application for Kapton sheets is to find a nice medium
> size surplus air variable capacitor.  Now, attach Kapton sheets to the
> metal blades with the Kapton sheets extending approximately 3 inches beyond
> each blade.  Immerse in xmfr oil and your have a wide range variable
> capacitor that can be connecting in parallel with your normal Tesla coil

What is the function of the Kapton sheets over and above the xformer oil?