Capacitance of a Cube and a Hollow Cylinder

We extended the surface element method proposed by Reitan and Higgins for calculating the capacitance of cubes, subdividing each face of a cube into up to \(600 \times 600 \) Subsquares. When each face was divided into \(90 \times 90\) Subsquares, the capacitance of the unit cube reached a maximum value of \(0.6608\) cm (\(0.7352\) pF). We further applied this method to compute the capacitance of hollow cylinders by dividing them into \(q\) annular rings (each \( 1\) cm in width), with each ring subdivided into \(m\) square elements ( \(1\) cm side length). The capacitance of hollow cylinders under varying \(q/m\) ratios was calculated and compared with Lekner's numerical results and Cavendish's experimental measurements, showing excellent agreement with both.