Chances are you’ve encountered some version of the “Ebbinghaus illusion,” in which a central circle appears to be smaller when encircled by larger circles and seems larger when surrounded by smaller ...

Optical illusion challenges have taken over the internet, testing how easily our eyes and brains can be fooled. From shifting shapes to colour-changing images, these puzzles spark conversations, ...

An optical illusion is a visual phenomenon in which our perception of an image differs from objective reality. This image is perceived as a motion geometric distortion illusion, where the image seems ...