Given a charged flat conductor at potential V, and a wire mesh on both sides at potential 0 located a distance D away from the plate, let the whole apparatus be immersed in an electrolyte. What is the maximum spacing S of the wires that make up the mesh, such that at any point (far enough away from the edge of the plate that we do not have to consider edge effects), within the liquid but outside the assembly (that is, at a distance greater than D from the plate), the absolute value of the potential will not be greater than |V|/100?