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A mobile supporting three spotlights and an electric fan hangs from the ceiling. The fan comes on at intervals to propel the mobile’s rotation; the spotlights project three circles of light onto the floor. A large, warm-hued, unmoving circle is orbited by two smaller, bluer circles. One of these steadily moves along the large circle’s outer edge, while the other traverses it less predictably.


Fan, three spotlights, carbon tubes, sliding contacts, cables, wire