Michael Bach is a scientist dedicated to studying, among other things visual perception and in addition to several books they have a page where they compile Explanations on over 150 illusions and visual phenomena, They are not “tricks to trick the eye” or “brain traps” as he says, nor do they show that “our mind is too limited” but just visual effects with an explanation behind them that Perception can teach us about our limits. sight.
Although this page dates back to the ’90s, exploring it is as simple as clicking on each thumbnail and enjoying it. There are great classics like Adelson’s chessboard with shadows that turn silhouettes, tilting towers or vanishing points, which have always seemed most impressive to me.
There are many of them animated images and practically everyone has parameters interactive With which to vary certain values ​​to get a greater or lesser effect, to find the limits within which the effects occur, to try certain colors or others, and so on. There are also comments, history, and several references for each fallacy.
Sometimes there are non-visual illusions, such as the famous Shepherd musical scale, where the notes go up and up endlessly, but most of them are images and accompanied by movement, brightness and contrast, color, perceptual geometry, 3D. to do or how we see faces.
