A number of artists, the successors to geometric abstraction, imagined their own new languages. Similar to kinetic and spatialist artists, the Belgian Pol Bury invented mobile geometric shapes, the works being infinitely recomposed by their movements. He sought to go beyond painting by designing mobile, three-dimensional works. Powered by an electric motor at the back, these works dependent on chance are set in motion by the artist or the spectator, questioning the very foundations of classical painting and its static, two-dimensional format.