Concentric Aphasia is a 35' tall stainless steel kinetic sculpture. Four 20' pendulums have a pivot placed just above their respective centers of gravity. They rotate about the pivot in a sinusoidal motion, independent of one another. The movement is random, yet resembles a dance. On the ground, at four equally spaced points around the sculpture, are high power stage lights with color filters. As dramatic as the 20 foot long moving pendulums are during the day, they are even more so at night with the stainless steel reflecting 80-90% of the light received from the stage lights. The size, movement and lighting make it visible from all over the playa. The pendulums receive energy either from human input, through a pull cable, or from the abundance of wind energy on the playa.

http://www.soulinthemachine.com