Geometric patterns have been used in art for centuries. They can be seen in the world’s greatest artworks, from Francisco José de Goya to Andy Warhol. “Geometric drawing is fun and rewarding,” says ...

Before jumping on in we have one question on our minds: what is an optical illusion? Optical illusions are visuals that tend to be deceptive to the eye and brain. This is based on numerous factors ...

Have you ever wanted to make drawings that seem to jump right off the page now you can create these eye-catching images yourself with Drawing Amazing Optical Illusions, a book made specifically for ...

So I've read in more than a few places that color doesn't exist outside our heads, it's just wavelengths of light. That our brains are the things that make color, same with sound (which is just ...