Can't see the trick?

[TheCube 126]

[/correction] I now found what was special now about the vase, . Now, I need to find the dolphins.

[nuurhasan 1]

The first optical illusion here is wrong: http://brainden.com/visual-illusions.htm.. I measured it (roughly of course) by putting a ruler on screen, they are not equal. Is there another way to "properly" measure it?