People are losing their minds over this famous yet bizarre optical illusion. They say a picture ... set of horizontal lines can either form a circle, or be the intersection between two rectangles.

eye movements that give the illusion that objects near what you’re focusing on are moving. Which of the two circles in the centre is smaller? The pink circle on the right may seem bigger at ...

Our pick of the best optical illusions of all time will leave you amazed and confused in equal measure. Optical illusions come in many forms, from horses and tigers to moving shapes and floating ships ...