This optical illusion asks viewers to stare at a black X inside a blue circle without blinking. The idea is to tire out the ...

While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...

The optical illusion seen above makes the viewer feel as if they are falling into an expanding hole – and now we have a good explanation for why this happens. Optical tricks can be caused by different ...

India, June 24 -- Here is the best fun, challenging problem presented as an optical illusion. This will test how well and how quickly your eyes can identify different words, as well as crucial ...

New York — At the Museum of Illusions in New York City, around every corner is a wonder for the eyes. There's a vase that's a face, art that moves with you, and a room that seems to go on forever.

Discover 22 photos that accidentally created optical illusions. See how timing and perspective turned ordinary moments into ...

Architects and artists have clever ways of confusing your eyes and creating optical illusions with their building designs.

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 ...

Artificial intelligence programs can create optical illusions that other AIs are unable to recognise, creating a useful CAPTCHA test to differentiate humans from bots. A cat-and-mouse game has played ...

Optical illusions, quantum mechanics and neural networks might seem to be quite unrelated topics at first glance. However, in new research I have used a phenomenon called “quantum tunnelling” to ...

Face it — your eyes are playing tricks on you. Dr. Dean Jackson, a biologist and BBC presenter, shared a puzzling image on TikTok of an alleged optical illusion, claiming it contained a creepy, hidden ...