Re: Capacitance of Adjacent Spheres

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

Original poster: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br> 

Tesla list wrote:
 >
 > Original poster: "David Thomson" <dave-at-volantis-dot-org>
 >
 > Does anybody here have a copy of Cambridge Handbook of Physics Formulas?  I
 > need the formula for the capacitance of adjacent spheres.

There is a formula in:
http://www.coe.ufrj.br/~acmq/tesla/capcalc.pdf
Note that two spheres have three capacitances. From each one to ground
and between them.
For a capacitance matrix:
C11 C12
C12 C22
The three capacitances are:
Ca=C11+C12, Cb=C22+C12, Cc=-C12
Or:
C11 is the capacitance of the first sphere with the second grounded.
C22 is the capacitance of the second sphere with the first grounded.
-C12 is the capacitance between the spheres.

Antonio Carlos M. de Queiroz