Are you confident in your observation skills and quick thinking? Let’s put that to the test, with a fun brain teaser that will challenge your visual perception and speed. This optical illusion isn’t ...

Earlier today I posted five optical illusions by Olivier Redon, a French-American inventor. Here they are again – with demonstrations of how he created the effects. Three of the images are inspired by ...

Fascinating visual phenomena known as optical illusions cause our brains to interpret reality differently. They can cause us to misinterpret what we see or trick our visual system into perceiving ...

Since its debut in January 2025, the museum has featured over 60 exhibits. They range from the gravity-defying Anti-Gravity Room to the head-spinning Vortex Tunnel. The space serves as a practical ...

In 2023, I posed 23 challenges as part of the Gizmodo Monday Puzzle series. Some require a bit of math, and others a light familiarity with physics; but most can be solved through logic and creative ...

Look at the Coca-Cola can in the main image. It is not a can, but an optical illusion – a trick of perspective. Can you work out what is going on? The illusion is the latest masterpiece from Olivier ...