German artist, born in Schilde, Mark Brandenburg. After studying political economy at Frankfurt University 1955-6, studied at the Munich Academy 1956-61. Published the periodical Nota 1959-60 and ran the Galerie Nota 1960-1, with exhibitions of Morellet, Mack, Piene and Mavignier. Began to make white reliefs with rows of small hemispherical hollows or projections in regular progressions or combining progressions and chance, then started in 1960-1 to make kinetic works, at first with a large number of moving elements on a contrasting ground. Co-founder of Nouvelle Tendance 1961-2. First one-man exhibition at the Galerie Roepcke, Wiesbaden, 1962. Since 1965 has tended to use fewer and larger elements and more complex, unpredictable movements. His works also include prints made with the help of a computer. Has lived since 1970 in Amsterdam.
Ronald Alley, Catalogue of the Tate Gallery's Collection of Modern Art other than Works by British Artists, Tate Gallery and Sotheby Parke-Bernet, London 1981, p.329