Which American sculptor is famous for his mobiles?

Alexander Calder was the American sculptor famous for his mobiles. These kinetic sculptures use balanced rods, wires, and abstract shapes that move through motor power, touch, or air currents.

Calder initially made motor-driven abstract sculptures after visiting Piet Mondrian’s studio in Paris in 1930. Marcel Duchamp suggested the French word “mobile” for these moving works in 1931. Calder soon found that motors could make the movement repetitive, so he began creating suspended constructions whose motion changed naturally with the breeze.

His mobiles transformed sculpture from a fixed object into an event unfolding in space and time. Calder commonly used wire, wood, painted sheet metal, and carefully calculated counterweights. Their apparent spontaneity depended on precise balancing and engineering. He also made monumental outdoor works and static sculptures called “stabiles,” a term associated with Jean Arp.

Claes Oldenburg, Louise Bourgeois, and Henry Moore were all major sculptors, but none is chiefly identified with inventing or popularising the modern mobile. Calder’s family also had a notable sculptural tradition: both his father and grandfather were professional sculptors, although Alexander Calder developed a distinctly modern, kinetic art form.