Venezuelan painter and Kinetic artist, active mainly in Paris since 1960. He became interested in optical phenomena in the 1950s, and in the course of experimenting with the primary colours in arrangements of thin intersecting bands he found that he could create the illusion of a third or fourth non-existent colour. This led him to further experiments in a series entitled Chromatic Inductions, Chromointerference, Additive and Physichromy. In the last, which he began in 1959, he created shifting geometric images that emerge, intensify, change, and dematerialize as the viewer moves from one side of the work to the other. He achieved this effect by means of narrow vertical strips of metal, or plastic bands appended to the flat surface, and vertical painted colour lines.
[Chilvers, Ian, Harold Osborne, and Dennis Farr, eds. Oxford Dictionary Of Art. Oxford, New York: Oxford University Press, 1988.]
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