This has probably already been brought up at some point, but does anyone else think it is strange how much pi, the ratio of circumference to diameter, occurs in so much that has nothing to do with circles? I mean, why should an electric potential between two grounds have any significance with respect to the ratio of circumference to diameter (through the Fourier series)? Even more so, suddenly e, an equally strange appearance, comes into into play. They appear all over the place too, oscillations, orbits, etc. Mankind made a peculiar invention with math. You more mathy folks might think its totally normal within the math context, but no one is going to look at the physical situation of two grounded conductors (without already seeing the solution) and say, "Oh, I bet that 2.72 and 3.14 play a big part."