Spazio totale , by mario nigro , 1953 , abstract , Op Art style , Pattern, Turquoise, Line, Plaid, Textile
A computer generated image of yellow and blue squares.
 an optical illusion. The illusion is made up of squares. The squares are yellow and orange. The background is black. The orange squares are small. The black squares are larger than the yellow squares. There are red squares on the left side of the image. The red squares are more small than the black squares.