Inspired by P2O2 (Przemysław) I shot some optical illusions. Here you see the explanations. Click the pictures to open the pictures where I experimented different tricks.
I've always been interested on optical illusions done with two dimensional pictures. When I was a child, I read old illustrated books of inventions and discoveries, which my grandpa had bought in the beginning of 20th century. There I saw some of these tricks for the first time. Then later on I got very fascinated on art by M.C.Escher, who undeniable was a master on this kind of magic. Although, history of art is full of illusions.
Two dimensional pictures can just lie more than thousand words. Concave objects may turn convex, what is up seem to be down, lines are not as long as they seem to, and colors and tone can fool the eye as well. But I will not explain all these old tricks here. Instead I give you few links to some interesting Web sites on this topic:
And more you can find via Wikipedia. My personal favorite is 'Mighty Optical Illusions' blog because there you can join the discussions. So, keep your eyes open. You never know where the optical illusions are hiding and trying to fool you 😉