We love a nice optical illusion (if you hadn't noticed), and happily the internet is full of people creating little gems to trick our eyes. Anyone wanting to create their own won't want to miss this ...

Howard Lee is a popular artist known for his hyperrealistic depictions of everyday objects. Now he is creating simpler illusions using just pencil and paper. Although simple, there is a mystery to how ...

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 ...