Liquid Light
1971
7.62 cm diameter, heights: 53, 58, 64, and 68 cm.
Aluminium base and electric motor, ground aluminium cylinder wound with black enameled copper wire.
The oscillating line of reflected light on each cylinder acts as a system of signals that describes spatial changes occurring on the surface of the cylinder.
Originally made in 1971 and re-wound and re/mechanised in 1990.