Double Concurrence--Continuous Light, 2
Julio Le Parc
Argentine, born 1928
Black wood box, 21 x 19 3/4 x 5 5/8" (53.4 x 50 x 14.1 cm), with illuminated aperture, 7 7/8 x 8" (20 x 20.2 cm), in which fifty-four plastic squares, 1 1/2  x 1 1/2" (3.6 x 3.6 cm), are suspended from eighteen nylon threads; mirror backing, 11 7/8 x 16" (30.1 x 40.4 cm), two reflectors, three sets of interchangeable pierced metal screens, and two glass filters
Philip Johnson Fund