# Greens function and the conducting sphere

1. Jul 26, 2013

### Gavroy

Can somebody explain to me, when equations 2.48 and 2.50 are applicable and what $\Phi_s$ and $\Phi$ actually are? The thing is, I want to find a general equations that determines the field produced by conducting spherical sphere in an external field and was wondering whether these are the equations I am looking for.[Reference to 2.48 and 2.50][1]