“Fourth Dimension: A non-Euclidean geometrical concept that first became popular in France around 1910 and that may have influenced the Cubists. Picasso and Braque as well as Marcel Duchamp painted objects from multiple perspectives, suggesting a synthesis of views taken at various points in time. Contemporary artists such as Tony Robbin are once again dealing with issues of the fourth dimension by using computers and concepts based in physics and mathematics.”
Excerpted from: Diamond, David G. The Bulfinch Pocket Dictionary of Art Terms. Boston: Little Brown, 1992.