Its Your Time To
miniature shadow boxes inside tins（From Jim Doran ）
op art angles
op art quilt by my 5th grade students (Donna Staten)
This optical illusion of the skull falls under the gestalts theory of illusion.
rolling hills - contour lines using mass and volume
That had to of took some serious time to cut this stencil..
Designer shows how an astoundingly realistic 3D drawing of a black hole is made http://ow.ly/HkjH7
optical illusion art | ... art, is a style of visual art that makes use of optical illusions