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
Urban form and grain One square mile of different cities' street networks, held at the same scale to compare the urban form and grain. Geoff Boeing, The Right Tools for the Job Cityspace series mapscities