Alexander Calder
 Alexander Calder (/ˈkɔːldər/; July 22 1898 – November 11 1976) was an American sculptor best known as the originator of the mobile a type of kinetic sculpture made with delicately balanced or suspended components which move in response to motor power or air currents. By contrast Calder’s stationary sculptures are called stabiles. He also produced numerous wire figures notably for a miniature circus.