Watch a video of Otto Piene's Lichtballett: http://exhibitions.guggenheim.org/zero/#/artwork/light-piene
Otto Piene, Light Ballet (Light Drum), 1969, chrome, glass, and lightbulbs, height: 45.7 cm, diameter: 124.5 cm, Moeller Fine Art, New York; Light Ballet (Light Satellite), 1969, chrome and lightbulbs, diameter: 38 cm, Moeller Fine Art, New York. Photo: Thomas Hoepker
