Liquid Reflections was made in two series: the first in 1966 and the second which incorporated a number of design changes and improvements in 1968.
The following are the diameters of the works in both series.

Series 1 - 1967
18", 22", 24" 28" 30" 32" 34" and 36" (91.5cm)

Series 2 - 1968
24", 26" 28" 30" 32", 34", 36", 38", 40‘, 42", 44", 46" 48"
61cm, 75cm, 81.5cm , 86cm, 91.5cm, 101cm, 122cm

Acrylic drum containing water, turntable and projector lamp, acrylic balls

These works are in the following public collections: Tate Gallery, FNAC Paris, Moma, Paris, Kunstmuseum, Bern.

Liquid Reflections is comprised of a hollow acrylic disc, containing water and revolving on a motorized turntable. On its surface, two acrylic balls rotate, their motion subject to opposing forces: the centrifugal force of the spin of the disc and the centripetal force due to the concavity of the disc surface.