On the after-effect of seen movement
A 1911 monograph by Adolf Wohlgemuth, published by Cambridge University Press and drawn from Wellesley College Library, presenting experimental psychology of vision for an academic readership of physiological optics specialists. The pictures are plain laboratory photographs of apparatus such as a rotating spiral disc, a striped wheel on a stand, and line diagrams of nerve and muscle circuits with labelled nodes and arrows. A designer might take from them the stark, schematic look of early scientific apparatus photography and the radiating spiral and segmented wheel motifs that suggest motion.
