Re: Variable Capacitance and Inductance

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

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "David Thomson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dave-at-volantis-dot-org>
> 
> Hi Ed,
> 
> >> When considering a static capacitor, one with no frequency applied to the
> >> charge, the closer the charged body is to the earth, the higher the
> >> capacity.  This is obvious.  The further the charged body is from the
> earth,
> >> the lower the capacitance will be.  However, Tesla was measuring a
> dynamic
> >> charged body.  The amount of charge a body will hold depends on the
> >> dielectric between the charged bodies.  The further the ball was raised,
> the
> >> more dielectric between the sphere and earth and hence the greater the
> >> capacity.

	What does "more dielectric" mean?  In what way more?

> >       Not true.  The dielectric constant of the material surrounding the
> conductor affects the capacitance for a given geometry.  The volume of
> dielectric doesn't enter in per se.
> 
> Who said anything about the volume?  If you look at my other statements
> about dielectrics in this thread, you will see I'm talking about adding to
> the dielectric _strength_.  I never said volume.

	Read what I quoted above and you'll see the source of confusion.  You
don't say anything about dielectric strength, just the quantity (more)
of dielectric.  If that isn't volume, what is it?

> I've been studying the dimensions of capacitance (and other units) in great
> detail this year.  Please don't put words into my mouth.  I have enough
> challenge keeping up with my own errors than to have to address yours to.
> 
> Dave

????

Ed