Heinrich Heidersberger’s rhytmograms can be described as calligraphic images, delicately curved compositions, abstract figures, organisms, and spaces woven from light. The artist created the complex patterns, which capture the invisible and fleeting of time and movement in singular image fields, during the 1950s and 1960s. Heinrich Heidersberger drew them using a self-developed photographic device, the rhythmograph, which transferred the geometry of the waves and oscillations of light, the elegant trajectory of the individual ray of light, to photographic material not through a camera but through a sophisticated, space-consuming apparatus, that he built, rebuilt, and adopted his own cameras ...