Like any magic trick, this optical illusion requires careful planning and a particular perspective. A hand places a metal ball at the bottom of a 3D printed slide and the ball immediately rolls uphill ...

Optical Illusion: Where are our Lego lovers at? Today's optical illusion is going to be a treat for you all for sure! Today's puzzle will be about searching for a Lego. Take a look at the picture ...

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 ...

How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...