A mesmerizing geometric composition, Geneviève Claisse's *Rotacteur vert (Green Rotator)* features a wooden box alive with vibrant green tones punctuated by bold relief elements in white and black. The interplay of flat painted surfaces and three-dimensional forms creates a dynamic sense of rotation and movement, drawing the eye into its rhythmic, circular energy. True to Claisse's mastery of Op Art and constructivist principles, the work transforms a simple object into a hypnotic exploration of color, form, and spatial tension.