Op art works are abstract, with many better known pieces created in black and white. Typically, they give the viewer the impression of movement, hidden images, flashing and vibrating patterns, or of swelling or warping. Kinetic Art is art from any medium that contains movement perceivable by the viewer or depends on motion for its effect.

 

Time magazine coined the term op art in 1964, in response to Julian Stanczak's show Optical Paintings at the Martha Jackson Gallery, to mean a form of abstract art (specifically non-objective art) that uses optical illusions. Works now described as "op art" had been produced for several years before Time's 1964 article.