we’ve gathered five famous optical illusions and broken down the science behind them. You might just be surprised by how our eyes (and brain) lie to us far more than you think. 1. Moving snakes ...

Take a closer look at the arrangement of the tires and the patterns they form. Look for subtle changes in texture or shape that might indicate the presence of the bird. Scan the image systematically, ...

Op Art, also known as optical art ... this creates feelings that the work itself is moving. Bridget Riley's Uneasy Centre features black and white circles painted with lines of varying width.

Op Art, also known as optical ... moving. Image caption, Uneasy Centre, Bridget Riley, 1963, screenprint, Peter Horree / Alamy Stock Photo Bridget Riley's Uneasy Centre features black and white ...