“Up close, you can see that the image is actually black and white. It has coloured lines on top of it. From far away the ...

Sounds like a fair challenge, right? Set a timer and start looking! Optical illusions like this work by playing tricks on ...

If you're a fan of optical illusions and enjoy testing your brain with visual puzzles, we’ve got a new treat for you.

Optical illusions with hidden images are more than just fun – they are powerful tools to test your IQ, enhance cognitive skills, and sharpen your brain's ability to analyze patterns quickly.

The article describes an optical illusion where a piano is hidden among zebra stripes. To solve it, one must seek rectangular shapes and alternating black-and-white keys. The dense pattern of ...

Optical illusions are a great educational tool that challenges your brain while entertaining you. These mind-bending puzzles are a fun way to test your IQ and observation skills. Studies suggest ...

These optical clocks are still being assessed, but already now, some are 100 times more accurate than cesium clocks. They will therefore become the future basis for the worldwide definition of the ...

RECENT articles 1–3 in Nature have discussed the explanation of optical illusions and, in particular, Gregory's theory of constancy scaling. According to this theory, illusions are produced in ...