Richard Martin Willstätter FRS(For) HFRSE (German pronunciation: [ˈʁɪçaʁt ˈvɪlˌʃtɛtɐ] , 13 August 1872 – 3 August 1942) was a German organic chemist whose study of the structure of plant pigments, chlorophyll included, won him the 1915 Nobel Prize for Chemistry. Willstätter invented paper chromatography following the initial description of the separation technique by Mikhail Tsvet.
Carl Joseph Schröter (19 December 1855 – 7 February 1939) was a Swiss botanist born in Esslingen am Neckar, Germany.
From 1874 he studied natural sciences at Eidgenössische Polytechnische Schule (ETH Zurich), where one of his early influences was geologist Albert Heim (1849–1937). Following his habilitation in 1878, he worked as an assistant to Carl Eduard Cramer (1831–1901). In 1883 he succeeded Oswald Heer (1809–1883) as professor of botany at ETH Zurich, a position he kept until 1926.Schröter was a pioneer in the fields of phytogeography and phytosociology. He introduced the concept of "autecology" to explain the relationship of an individual plant with its external environment, and "synecology" to express relationships between plant communities and external influences.In 1910 with Charles Flahault (1852–1935), he released Rapport sur la nomenclature phytogéographique (Reports on phytogeographical nomenclature), and with Friedrich Gottlieb Stebler (1852-1935), he was co-author of Die besten Futterpflanzen, etc. (1883–1884), a work involving forage crop cultivation and economics. It was later translated into English, and published with the title, "The best forage plants: fully described and figured with a complete account of their cultivation, economic value, impurities and adulterants, &c" (1889). With geographer Johann Jakob Früh, he was co-author of a book on Swiss moorlands, titled Die Moore der Schweiz : mit Berücksichtigung der gesamten Moorfrage (1904).
Rolf Widerøe (11 July 1902 – 11 October 1996) was a Norwegian accelerator physicist who was the originator of many particle acceleration concepts, including the resonance accelerator and the betatron accelerator.
Carl Jacob Christoph Burckhardt (25 May 1818 – 8 August 1897) was a Swiss historian of art and culture and an influential figure in the historiography of both fields. He is known as one of the major progenitors of cultural history. Sigfried Giedion described Burckhardt's achievement in the following terms: "The great discoverer of the age of the Renaissance, he first showed how a period should be treated in its entirety, with regard not only for its painting, sculpture and architecture, but for the social institutions of its daily life as well."His best known work is The Civilization of the Renaissance in Italy (1860).