A Light-Play in Black-White-Gray(Ein Lichtspiel schwarz weiss grau)

This short film made by László Moholy-Nagy is based on the shadow patterns created by his Light-Space Modulator, an early kinetic sculpture consisting of a variety of curved objects in a carefully choreographed cycle of movements. Created in 1930, the film was originally planned as the sixth and final part of a much longer work depicting the new space-time. - http://www.sfmoma.org