<blockquote>Just as one can compose colours, or forms, so one can compose motions<sup>1</sup>.</blockquote>Inspired by the dynamic elements of the universe Alexander Calder sought to bring movement to art. <br><br>Calder became interested in motion following a visit to abstract artist Piet Mondrian’s Paris studio in 1930. Inspired by the coloured geometric shapes of Mondrian’s paintings, Calder began experimenting with abstraction and movement. Working with wire, he formulated his ideas by “drawing in space”<sup>2</sup>, creating three-dimensional sketches. Calder developed his designs by joining wire arms to intricately balanced metal or wooden paddles, thus creating delicately poised kinetic sculptures, powered by the slightest currents of air. These structures came to be known as “mobiles” after Marcel Duchamp suggested the term in 1931. The word has now passed into everyday usage to describe a suspended decorative structure, such as those found above a baby’s cot.<br><br>Calder’s training as a mechanical engineer enabled him to create an astonishing physical equilibrium within his complex pieces. <em>Rouge Triomphant</em> (1959-1963)<sup>3</sup>, spanning almost 6m, is a majestic sculpture suspended from the ceiling, continually changing form; its shape at any given moment wholly determined by chance. <br><br>Comprised of industrial materials, formed of abstract shapes and bold colours, the stark physical substance of Calder’s mobiles contrast with their serene, delicate motion. In capturing colour, form and motion Calder transformed harsh elements into graceful sculptures, with soothing, soporific qualities. <br>