Simple Experiments on Perception of Color Using Cardboard Turbines

摘要

Many experiments have been described, ranging from overhead projectors with filters to simple tops with painted disks, to show the way in which we perceive mixtures of colors.1 Playing with a piece of cardboard, I came across an extremely simple method to do additive mixing of colors. The only materials needed are a square (3 * 3 cm) piece of black cardboard and red, green, yellow, and blue stickers (or pieces of paper).