31. In the 1880s Schwarz and his student E . R . Neovius described periodic minimal surfaces . 32. In fact, something should be written about harmonic functions in the minimal surface article . .. 33. A minimal surface is essentially a soap film. 34. Perelman verified what happened to the area of the minimal surface when the manifold was sliced. 35. One might imagine a soap bubble that finds a minimal surface of the poles and zeros. 36. Brownian motion on a minimal surface leads to probabilistic proofs of several theorems on minimal surfaces. 37. Deep-focus earthquakes give rise to minimal surface waves. 38. Minimal surfaces are part of the Olympiapark in M�nich by Frei Otto, inspired by soap surfaces.39. The mathematical problem of existence of a minimal surface with a given boundary is named after him. 40. It has the special property of being the minimal surface that contains a cycloid as a geodesic.
