Re: Isotropic Capacitance

A quick observation by me on this...

> It is interesting to note that tesla spent a lot of time and work
> making an exhaustive study of elevated capcitances, it therefore
> was of great importance to him.  You would think that the higher
> the sphere was above the earth, the lower the capacitance, but if
> you plot the values Tesla got, then you see this is not the case. 
> There is a trend toward lower capacitances, but only at the maximum
> altitudes.

I think that the huge surface area of the ground swamps small 
variations in height. Possibly also, by raising the sphere, more of
the earth (globe) "comes into view" which I suspect would also
contribute to some invariance in the sphere capacitance.