an artist of great originality who defined volume without mass and incorporated movement and time in art. His inventions redefined certain basic principles of sculpture and have established him as the most innovative sculptor of the twentieth century.Alexander Calder, America's first abstract artist of international renown, is forever associated with his invention of the mobile. Born into a Philadelphia family of sculptors, he studied first as a mechanical engineer and then as a painter in the style of the Ashcan School. In 1926, Calder left for Paris, then Europe's cultural capital. There he attracted the attention of the avant-garde with his amusing performances with a partly-mechanized miniature circus of wire and cloth figures. By 1930 he had developed freely moving sculptures of arcs and spheres. Calder's mobiles were squarely within the spirit of the times, from their engagement with machine technology to their use of abstraction as a universal language of creative truth. Linked to Dada and Surrealism by playfulness and chance arrangement, his sculpture responded to Constructivism by energizing art's elements in the viewer's space. ...
