The Expanding Hole illusion has been around for a while and never fails to mesmerise. In a study, researchers showed this illusion to 50 participants. For a whopping 86% of them, the black "hole ...

An optical illusion showed a bird hidden among tyres in a junkyard, challenging users to spot it within 4 seconds. Optical illusions are fascinating brain teasers that test our perception ...

The 'expanding hole' is an illusion new to science, strong enough to prompt the human eye pupils to dilate in anticipation of entering a dark space. Disclaimer: AAAS and EurekAlert! are not ...

Optical illusions have long fascinated internet users, offering a fun and engaging way to test visual perception. These brain teasers come in many forms, including age-related puzzles ...

Dr Chris and Dr Xand teach you how to trick your eyes with an optical illusion that's more than it ... Dr Chris drew a mole on one circle and hole on the other. Dr Xand drew a loo and a poo!