Illusion Lab: A Laboratory for Optical Illusions

Field notes

The collection uses a question-and-reveal format: visitors first judge an image, then open an explanation of the mechanism. Listed examples cover length, color, apparent motion, ambiguous rotation, and images that change when viewed from a distance. The creation tool is described as generating a distant-view image from a name or message, while the site also states that its illustrations are independently reimplemented rather than reproduced from other sources.