3

Based on a suggestion I once found here on MESE, my class last term proved (via Green’s theorem) the existence of a linear planimeter, showing how it could mechanically measure the area of a shape. When we were done with the proof, I brought out the one I built at home from scrap wood: Figure 1: The red arm freely pivots on a block that is constrained to ...


Only top voted, non community-wiki answers of a minimum length are eligible