example

Angela Bulloch, Pink Double Switch Piece, 1989, opal polycarbonate spheres, wire, lamp holders, pearl bulbs, electronic switching mechanism, each sphere: 50 cm (diameter). Photo © Lothar Schnepf

Each work in the series consists of opalescent polycarbonate spheres with colored light bulbs. The light switches from one sphere to the other at regular intervals, while the light is on in only one sphere at any one time.