10,219 articles
Oswald Teichmüller
Oswald Teichmüller (1913–1943) was a German mathematician who founded Teichmüller theory, the study of Riemann surfaces through quasiconformal mappings, and was also a committed Nazi activist.
Oswald Veblen
Oswald Veblen (1880–1960) was an American mathematician who worked on geometry and topology and built the Princeton mathematics department and the Institute for Advanced Study.
Otakar Borůvka
Otakar Borůvka (1899–1995) was a Czech mathematician at Masaryk University in Brno who published the first solution of the minimum spanning tree problem in 1926.
Othniel Charles Marsh
Othniel Charles Marsh was an American vertebrate paleontologist, the first professor of the field at Yale, who named Apatosaurus, Stegosaurus, and Triceratops and waged the Bone Wars.
Ott-Heinrich Keller
Ott-Heinrich Keller (1906–1990) was a German mathematician who posed Keller's conjecture on tilings of space by cubes in 1930, and held the chair of mathematics at Halle-Wittenberg from 1951 to 1971.
Otto Diels
Otto Paul Hermann Diels (1876–1954) was a German organic chemist at Kiel University who shared the 1950 Nobel Prize in Chemistry with Kurt Alder for the diene synthesis.
Otto E. Neugebauer
Otto E. Neugebauer (1899–1990) was an Austrian-born American historian of the exact sciences who created the modern study of ancient Egyptian and Babylonian mathematics and astronomy, winning the 1986 Balzan Prize.
Otto Fischer (German chemist)
Otto Fischer (Otto Philipp Fischer) was a German chemist who held the chemistry chair at the University of Erlangen from 1885 to 1925 and worked on organic dyestuffs.
Otto Folin
Otto Folin, full name Otto Knut Olof Folin, was a Swedish-born American biochemist at Harvard Medical School who pioneered quantitative clinical chemistry and the Folin–Wu blood analysis system.
Otto Forster
Otto Forster, born 1937 in Munich, is a German mathematician and emeritus professor at LMU Munich known for Riemann surfaces, algorithmic number theory, and his Analysis textbook series.
Otto Hahn
Otto Hahn was a German radiochemist who, with Fritz Strassmann, discovered nuclear fission in 1938, winning the 1944 Nobel Prize in Chemistry and later campaigning against nuclear weapons.
Otto Haxel
Otto Haxel (1909–1998) was a German nuclear physicist who co-discovered the nuclear shell model in 1949, led research at Heidelberg and Karlsruhe, and signed the 1957 Göttingen Declaration against nuclear weapons.
Otto Heckmann
Otto Heckmann (1901–1983) was a German astronomer who classified relativistic world models, led the Hamburg Observatory, and became the first Director General of the European Southern Observatory in 1962.
Otto Hölder
Otto Hölder was a German mathematician (1859–1937) who held the chair at Leipzig and gave his name to Hölder's inequality, Hölder spaces, and the Jordan–Hölder theorem.
Otto Hönigschmid
Otto Hönigschmid was an Austrian-born chemist, the last classical atomic-weight analyst, who determined the atomic weights of nearly fifty elements and gave the first chemical proof of isotopes.
Otto Kratky
Otto Kratky (1902–1995) was an Austrian physical chemist who made small-angle X-ray scattering a general method for determining the size and shape of macromolecules in solution, and designed the Kratky camera.
Otto L. Muskens
Otto L. Muskens is a Dutch nanophotonics researcher, Professor of Physics at the University of Southampton since 2014, known for light scattering in nanowire mats.
Otto Laporte
Otto Laporte (1902–1971) was a German-born American physicist at the University of Michigan, known for the Laporte rule in atomic spectroscopy and for shock tube research.
Otto Lehmann (physicist)
Otto Lehmann (1855–1922) was a German physicist who succeeded Heinrich Hertz at Karlsruhe, coined the term "liquid crystal," and promoted the field from 1889 onward.
Otto Lummer
Otto Lummer (1860–1925) was a German experimental physicist whose precision blackbody measurements at the Physikalisch-Technische Reichsanstalt helped lead Max Planck to the quantum hypothesis in 1900.
Otto M. Nikodym
Otto M. Nikodym (Otton Marcin Nikodym, 1887–1974) was a Polish mathematician known for the Radon–Nikodym theorem, the Nikodym set, and the Nikodym–Grothendieck boundedness theorem; he taught at Kenyon College in Ohio from 1948 to 1965.
Otto Nordenskjöld
Otto Nordenskjöld (Nils Otto Gustaf Nordenskjöld) was a Swedish geographer and explorer who led the Swedish Antarctic Expedition of 1901–1904, during which his ship was crushed by ice.
Otto Richard Lummer
Otto Richard Lummer (1860–1925) was a German experimental physicist who, with Wien and Pringsheim at the Reichsanstalt in Berlin, verified the radiation laws and prompted Planck's 1900 quantum formula.
Otto Robert Frisch
Otto Robert Frisch was an Austrian-born British physicist who, with his aunt Lise Meitner, interpreted and named nuclear fission, proved it experimentally in 1939, and co-authored the 1940 Frisch–Peierls memorandum showing an atomic bomb was feasible.
Otto Ruff
Otto Ruff (1871–1939) was a German inorganic chemist who became the leading authority on fluorine chemistry after Moissan's death, preparing new fluorides including uranium hexafluoride.
Otto S. Wolfbeis
Otto S. Wolfbeis (1947–2023) was an Austrian chemist who held the chair of Analytical and Interface Chemistry at the University of Regensburg and pioneered optical chemical sensors and biosensors.
Otto Schmidt
Otto Yulyevich Schmidt (Отто Юльевич Шмидт; 1891–1956) was a Soviet mathematician, Arctic explorer, and planetary scientist whose 1944 theory of Earth's origin became the core-accretion model.
Otto Schönherr
Otto Schönherr (1861–1926) was a German chemist at BASF in Ludwigshafen am Rhein, twice nominated for the Nobel Prize, known for the electric-arc oxidation of nitrogen to nitric acid.
Otto Schreier
Otto Schreier (1901–1929) was an Austrian mathematician who solved Hölder's group extension problem, proved subgroups of free groups are free, and refined the Jordan–Hölder theorem.
Otto Stern
Otto Stern was a German-born American experimental physicist who founded molecular beam physics, co-created the 1922 Stern–Gerlach experiment, and won the 1943 Nobel Prize in Physics.