Sep 29, 2017
Optical illusion Friday! I have been drawing this one for a long time, it's by far my favorite illusion. Is the box facing down and to the right or up and to the left? This illusion is called a Necker cube after Louis Albert Necker who published his wire frame drawing in 1832. #opticalillusion #vectorart #graphicdesign #illustrator #neckercube #whichwayisitgoing