Photogravure after an earlier painting or photograph. Gustav Theodor Fechner (1801-1887) was interested in mind-body relationships, and in philosophy and anthropology. His book 'Elements of Psychophysics' (1860) developed the ideas of Ernst Heinrich Weber on the measurement of sensory thresholds. Fechner founded experimental aesthetics, and his ideas influenced experimental psychology. From a collection of portraits of scientists published by Photographische Gesellschaft, Berlin, 1910. Dimensions: 460mm x 340mm.
© Science Museum / Science & Society Picture Library