Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

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 ...

A hidden dog optical illusion shared on Reddit puzzled users.

Optical illusions gets our brain to exercise, and can be the perfect test of our observational skills and keen eye. An optical illusion is a visual phenomenon where the brain misinterprets what the ...

Our eyes can frequently play tricks on us, but scientists have discovered that some artificial intelligence can fall for the same illusions. And it is changing what we know about our brains. When we ...

Optical illusions are becoming more and more popular on the internet. Thousands of people have made optical illusions their favourite pastime because of the game's simplicity and directness. The ...

If you have never seen an optical illusion, it is an image that makes you see things differently than they actually are. Optical illusions trick your eyes into believing you see something that is not ...