A gradual refinement The steel rail is an artifact whose form has been carefully optimized. This gradual refinement of the design was done not by a single brilliant engineer but by more than a century of industrial evolution. The rail was never meant to be an object of beauty, but its cross section has all the elegance of fine typography. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape elegancetypographytransportationevolutionchange
Hiding Images in Plain Sight An Article by Matt Ferraro mattferraro.dev I recently made a physical object that defies all intuition. It's a square of acrylic, smooth on both sides, totally transparent. A tiny window. But it has the magic property that if you shine a flashlight on it, it forms an image. caustics