From paint brushes to portraits, we love art.
Abstract sculpture that has moving parts, driven either by motors or by the natural force of air currents. Its revolving parts create a new visual experience of constantly changing volumes and forms. The term was initially suggested by Marcel Duchamp for a 1932 Paris exhibition of such works by Alexander Calder, who became the mobile's greatest exponent.
Find more information on mobile. Upgrade to Britannica Online for more on mobile.