Figure D8.
Potential contour map of finite uniform square toroid. Same as Fig. D1 but for a finite uniform square toroid of the inner and outer radii, Rin = 1 and Rout = 3. Namely, the object occupies the volume defined as Rin ≤ R ≤ Rout and 0 ≤ |z| ≤ (Rout − Rin)/2.