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Hans Max Jahn
Hans Max Jahn (4 July 1853 – 7 August 1906) was a German physical chemist who worked on thermochemistry and electrochemistry. As an experimental chemist he identified problems in the contemporary theory of electrolyte conductivity and examined the thermodynamic validity of the Gibbs-Helmholtz equation. Jahn was born in Küstrin (now in Poland) and was educated at the Universities of Berlin and Heidelberg in chemistry and mathematics. His early influences included A. W. von Hofmann whom he assisted as a student, Robert Bunsen, G. Kirchhoff and the mathematician L. Kronecker. After receiving a doctorate in 1875 for work in organic chemistry he became an assistant to Anastassios Christomanos at Athens. In 1877 he moved to Vienna, working under Ernst Ludwig (1842–1915) and in 1884 he moved to Graz. From 1899 he taught at the agricultural school and university in Berlin. Jahn worked with Walther Nernst and one of his experimental result in 1900 was that there was an increased co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Jahn
Johannes Jahn (29 August 1885 – 10 July 1960) was a German trade unionist, politician and anti-Nazi activist. Jahn became a smelter, and then in 1909 began working for a trade union. By 1930, he was serving on the national executive of the United Union of German Railway Workers, and was an outspoken opponent of the Nazis. He opposed the dissolution of the unions in 1933, and managed to salvage a list of former union members in the Ruhr. This enabled him to set up a labour resistance group in the area, working closely with the International Transport Workers' Federation (ITF). Jahn was arrested three times by the Nazis, the last being in 1935, after they discovered his resistance group. He fled to Prague, then on to Amsterdam, where from 1936 to 1938, he published a journal for German railway workers in opposition to the Nazis. In 1940, he escaped to London, travelling via Spain and Portugal, where he set up a group of German trade unionists which later affiliated to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kostrzyn Nad Odrą
Kostrzyn nad Odrą (literally Kostrzyn upon Oder) (; german: Küstrin ) is a town in Gorzów County, Lubusz Voivodeship in western Poland, close to the border with Germany. Geography The town is situated within the historic Lubusz Land (''Ziemia Lubuska'') region at the confluence of the Oder and Warta rivers, on the western rim of the extended Warta mires. The town centre is located about south of Szczecin. Until the end of World War II and the implementation of the Oder–Neisse line in 1945, the municipal area also comprised the Küstrin-Kietz suburb on the west bank of the Oder river, which today is part of the German Küstriner Vorland municipality. The former town centre, the Küstrin fortress located on the headland between the Oder and Warta rivers, was destroyed by the Red Army as an act of revenge weeks before the end of WW2 and not rebuilt. Today Kostrzyn's central area is located around Kostrzyn railway station east of the Warta mouth. History Middle Ages Settled ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
August Wilhelm Von Hofmann
August Wilhelm von Hofmann (8 April 18185 May 1892) was a German chemist who made considerable contributions to organic chemistry. His research on aniline helped lay the basis of the aniline-dye industry, and his research on coal tar laid the groundwork for his student Charles Mansfield's practical methods for extracting benzene and toluene and converting them into nitro compounds and amines. Hofmann's discoveries include formaldehyde, hydrazobenzene, the isonitriles, and allyl alcohol. He prepared three ethylamines and tetraethylammonium compounds and established their structural relationship to ammonia. After studying under Justus von Liebig at the University of Giessen, Hofmann became the first director of the Royal College of Chemistry, now part of Imperial College London, in 1845. In 1865 he returned to Germany to accept a position at the University of Berlin as a teacher and researcher. After his return he co-founded the German Chemical Society (''Deutsche Chemische ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Bunsen
Robert Wilhelm Eberhard Bunsen (; 30 March 1811 – 16 August 1899) was a German chemist. He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff. The Bunsen–Kirchhoff Award for spectroscopy is named after Bunsen and Kirchhoff. Bunsen also developed several gas-analytical methods, was a pioneer in photochemistry, and did early work in the field of organic arsenic chemistry. With his laboratory assistant Peter Desaga, he developed the Bunsen burner, an improvement on the laboratory burners then in use. Early life and education Bunsen was born in Göttingen, Germany in 1811, in what is now the state of Lower Saxony in Germany. Bunsen was the youngest of four sons of the University of Göttingen's chief librarian and professor of modern philology, Christian Bunsen (1770–1837). After attending school in Holzminden, Bunsen matriculated at Göttingen in 1828 and studied chemistry with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Kirchhoff
Gustav Robert Kirchhoff (; 12 March 1824 – 17 October 1887) was a German physicist who contributed to the fundamental understanding of electrical circuits, spectroscopy, and the emission of black-body radiation by heated objects. He coined the term black-body radiation in 1862. Several different sets of concepts are named "Kirchhoff's laws" after him, concerning such diverse subjects as black-body radiation and spectroscopy, electrical circuits, and thermochemistry. The Bunsen–Kirchhoff Award for spectroscopy is named after him and his colleague, Robert Bunsen. Life and work Gustav Kirchhoff was born on 12 March 1824 in Königsberg, Prussia, the son of Friedrich Kirchhoff, a lawyer, and Johanna Henriette Wittke. His family were Lutherans in the Evangelical Church of Prussia. He graduated from the Albertus University of Königsberg in 1847 where he attended the mathematico-physical seminar directed by Carl Gustav Jacob Jacobi, Franz Ernst Neumann and Friedri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leopold Kronecker
Leopold Kronecker (; 7 December 1823 – 29 December 1891) was a German mathematician who worked on number theory, algebra and logic. He criticized Georg Cantor's work on set theory, and was quoted by as having said, "'" ("God made the integers, all else is the work of man").The English translation is from Gray. In a footnote, Gray attributes the German quote to "Weber 1891/92, 19, quoting from a lecture of Kronecker's of 1886". Weber, Heinrich L. 1891–1892Kronecker 2:5-23. (The quote is on p. 19.) Kronecker was a student and lifelong friend of . Biography Leopold Kronecker was b ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anastassios Christomanos
Anastasios Christomanos ( el, Ἀναστάσιος Χρηστομάνος, 1841 - 1906) was one of the most important Greek scientists of the later part of the 19th century. His academic collaborators were some of the most important scientists in the world, including Robert Bunsen, Georg Ludwig Carius, Emil Erlenmeyer and Gustav Kirchhoff. He is the father of modern Greek chemical education. He wrote 73 books and dissertations. His fields of study included: Inorganic Chemistry, Organic Chemistry, and Analytical Chemistry. He helped restructure Greek education. Greek education was in the grasp of Korydalism for over 300 years. With the onset of the Industrial Revolution, Christomanos and his contemporaries were pioneers of modern education all over the world. Christomanos was born in Vienna to a family that migrated from what is now Bulgaria. They were an important aristocratic Greek family, claiming roots in the Byzantine Empire. He showed an interest in scienc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walther Nernst
Walther Hermann Nernst (; 25 June 1864 – 18 November 1941) was a German chemist known for his work in thermodynamics, physical chemistry, electrochemistry, and solid state physics. His formulation of the Nernst heat theorem helped pave the way for the third law of thermodynamics, for which he won the 1920 Nobel Prize in Chemistry. He is also known for developing the Nernst equation in 1887. Life and career Early years Nernst was born in Briesen in West Prussia (now Wąbrzeźno, Poland) to Gustav Nernst (1827–1888) and Ottilie Nerger (1833–1876). His father was a country judge. Nernst had three older sisters and one younger brother. His third sister died of cholera. Nernst went to elementary school at Graudenz. He studied physics and mathematics at the universities of Zürich, Berlin, Graz and Würzburg, where he received his doctorate 1887. In 1889, he finished his habilitation at University of Leipzig. Personal attributes It was said that Nernst was mechanica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Svante August Arrhenius
Svante August Arrhenius ( , ; 19 February 1859 – 2 October 1927) was a Swedish scientist. Originally a physicist, but often referred to as a chemist, Arrhenius was one of the founders of the science of physical chemistry. He received the Nobel Prize for Chemistry in 1903, becoming the first Swedish Nobel laureate. In 1905, he became director of the Nobel Institute, where he remained until his death."Arrhenius, Svante August" in '' Chambers's Encyclopædia''. London: George Newnes, 1961, Vol. 1, p. 635. Arrhenius was the first to use principles of physical chemistry to estimate the extent to which increases in atmospheric carbon dioxide are responsible for the Earth's increasing surface temperature. His work played an important role in the emergence of modern climate science. In the 1960s, Charles David Keeling demonstrated that the quantity of human-caused carbon dioxide emissions into the air is enough to cause global warming. The Arrhenius equation, Arrhenius ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1853 Births
Events January–March * January 6 – Florida Governor Thomas Brown signs legislation that provides public support for the new East Florida Seminary, leading to the establishment of the University of Florida. * January 8 – Taiping Rebellion: Zeng Guofan is ordered to assist the governor of Hunan in organising a militia force to search for local bandits. * January 12 – Taiping Rebellion: The Taiping army occupies Wuchang. * January 19 – Giuseppe Verdi's opera '' Il Trovatore'' premieres in performance at Teatro Apollo in Rome. * February 10 – Taiping Rebellion: Taiping forces assemble at Hanyang, Hankou, and Wuchang, for the march on Nanjing. * February 12 – The city of Puerto Montt is founded in the Reloncaví Sound, Chile. * February 22 – Washington University in St. Louis is founded as Eliot Seminary. * March – The clothing company Levi Strauss & Co. is founded in the United States. * March 4 – Inauguration of Franklin Pierce as 14t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1906 Deaths
Nineteen or 19 may refer to: * 19 (number), the natural number following 18 and preceding 20 * one of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (film), a 1987 science fiction film Music * 19 (band), a Japanese pop music duo Albums * ''19'' (Adele album), 2008 * ''19'', a 2003 album by Alsou * ''19'', a 2006 album by Evan Yo * ''19'', a 2018 album by MHD * ''19'', one half of the double album '' 63/19'' by Kool A.D. * '' Number Nineteen'', a 1971 album by American jazz pianist Mal Waldron * ''XIX'' (EP), a 2019 EP by 1the9 Songs * "19" (song), a 1985 song by British musician Paul Hardcastle. * "Nineteen", a song by Bad4Good from the 1992 album ''Refugee'' * "Nineteen", a song by Karma to Burn from the 2001 album ''Almost Heathen''. * "Nineteen" (song), a 2007 song by American singer Billy Ray Cyrus. * "Nineteen", a song by Tegan and Sara from the 2007 album '' The Con''. * "XIX" (song), a 2014 song by S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
