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sculptures featuring lines, circles and spheres. Calder then set out on a quest to introduce motion in art. He produced a series of motorized sculptures which Marcel Duchamp promptly dubbed "mobiles." Several are in the exhibition (though their mechanisms are too fragile to be turned on; small video monitors show them in action). Elsewhere, he suspended moveable elements in front of colored panels to create kinetic paintings. The show presents a roomful of that work. Before long, he transitioned to creating motorless moving sculptures - the mobiles that he is best known for. Tate has a huge room of them, dangling delicately from the ceiling. According to his grandson, Calder worked seven days a week throughout his career. After morning coffee and a softboiled egg, he headed straight for his studio, whether in Roxbury, Connecticut or in Sache in France's Loire Valley. It was "a very silent place, like a sanctuary," with no music and not a single assistant, Mr. Rower said. `Tate: The Tate Modern is a large museum of modern art in London 2Baker: Josephine Baker, a famous American entertainer Work Cited Excerpt from "Alexander Calder Comes to Life at London's Tate Modern" by Farah Nayeri, from The New York Times, November 11, 2015. Copyright @ 2015, The New York Times Company. Used by permission of the publisher via Copyright Clearance Center