John Latham - Full Stop (1961)
Full Stop is a vast painting of a large black spot roughly in the center of an unprimed and un-stretched canvas. Painted with a spray-gun and displayed pinned to the wall the work implies both text and painting as new mechanical processes.
Latham called these works 'process sculpture', and because of the tiny dots of black pigment created by the spray gun he described them as a new way of considering and unifying time and matter. He wrote extensively about a complex philosophy of time, combining physics philosophy and art to explain the significance of the mark making process of the sparay gun in a text titled The Mark (1954).