Karl Gustav Cassel was a Swedish economist and professor of economics at Stockholm University. Cassel was among the most prominent economists in the world in the interwar period.
Gustav Cohn was a German economist, noted for his pioneering contributions to the theory and policy of transportation and public finance. He was educated at Berlin and Jena universities. During 1867 and 1868 he was the holder of a fellowship at the Royal Statistical Bureau of Berlin, and in 1869 became privat-docent at the University of Heidelberg, but in the same year accepted an invitation from the Polytechnikum at Riga. Cohn paid a visit to England in 1873, and the fruits of his observation and research were embodied in the masterly production "Untersuchungen über die Englische Eisenbahnpolitik," 2 vols., Leipzig, 1874-75. In 1875, he was invited to fill the chair of economics at ETH Zurich, which he held until 1884, when he became professor in the University of Göttingen.
Gustav Emil Wilhelm Ecke was a German and later American historian of art best known for his book Chinese Domestic Furniture, first published in wartime China in 1944. The book presented the aesthetic of a neglected art form for scholars and connoisseurs and described the techniques of construction for cabinet-makers. It was the first book in any language on Chinese classic hardwood furniture.
Gustav Theodor Fechner was a German physicist, philosopher, and experimental psychologist. A pioneer in experimental psychology and founder of psychophysics, he inspired many 20th-century scientists and philosophers. He is also credited with demonstrating the non-linear relationship between psychological sensation and the physical intensity of a stimulus via the formula: , which became known as the Weber–Fechner law.