Hi tide, A while back I asked you about potential. And you said to consider the electrons as a continuum when we talk about a body having charge on its surface. Its clear that if you have any finite number of point charges, (the electrons), then there is no way you can arrange them so that the surface is equipotential. So how is potential fixed for this problem when working at the atomic scale. I dont see how you could have an equipotential surface at the atomic scale when dealing with point charge electrons.