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Kirchhoff
Kirchhoff, Kirchoff or Kirchhoffer is a German surname. Notable people with the surname include: * Adolf Kirchhoff (1826–1908), German classical scholar and epigrapher * Alfred Kirchhoff (1838–1907), German geographer and naturalist * Alphonse Kirchhoffer (1873–1913), French Olympic fencer * Charles William Henry Kirchhoff (1853-1916), American editor and metals expert * Detlef Kirchhoff (born 1967), German rower * Fritz Kirchhoff (1901–1953), German screenwriter, film producer and director * Gustav Kirchhoff (1824–1887), German physicist — Kirchhoff's laws in electricity, spectroscopy, thermochemistry * Gottlieb Kirchhoff (1764–1833), German chemist * Jan Kirchhoff (born 1990), German footballer * Mary Kirchoff (born 1959), American fantasy novelist * Paul Kirchhoff (1900–1972), German anthropologist and ethnologist of pre-Columbian Mesoamerican cultures * Robert Kirchhoff (born 1962), Slovak film director * Ulrich Kirchhoff (born 1967), German show jumper See als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jan Kirchhoff
Jan Tilman Kirchhoff (born 1 October 1990) is a German former professional footballer who played as a centre-back or defensive midfielder. Club career Mainz 05 Born in Frankfurt, West Germany, Kirchhoff began his football career at SpVgg Kickers 16 Frankfurt before joining Eintracht Frankfurt in 1999. While at Eintracht Frankfurt, he was once a ball boy. Kirchhoff then joined 1. FSV Mainz 05 in 2007 and it was there when he switched position from midfield position to centre–back position. At the time of moving to the club, Kirchhoff was a student, attending a boarding school. While progressing at 1. FSV Mainz 05, he was a captain for the club's second team and was eventually called up to the first team. Kirchhoff made his professional debut in the 2. Bundesliga for 1. FSV Mainz 05 on 2 November 2008, when he started in a game against Rot Weiss Ahlen. This turns out to be his only appearance for the side in the 2008–09 season, as Kirchhoff continued to play for the club' ... [...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 Friedrich Julius Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Kirchhoff
Paul Kirchhoff (17 August 1900, Halle, Province of Westphalia – 9 December 1972) was a German-Mexican anthropologist, most noted for his seminal work in defining and elaborating the culture area of Mesoamerica, a term he coined. Early life and academic career Paul Kirchhoff was born in the German locality of Hörste, in the region of Westphalia. He commenced his undergraduate studies in Protestant theology and comparative religion at the University of Berlin, moving later to Albert Ludwigs University of Freiburg. In the mid-1920s he undertook further studies at the University of Leipzig in ethnology and psychology, where he first developed his abiding interest in the indigenous cultures of the Americas. completing his studies in 1927. In 1928, he left for the United States. There, as a student of Edward Sapir, he studied the Navajo language until 1930. By 1931 he had returned to Germany to defend his thesis. He was the co-founder of Mexico's National School of Anthrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirchhoff's Theorem
In the mathematical field of graph theory, Kirchhoff's theorem or Kirchhoff's matrix tree theorem named after Gustav Kirchhoff is a theorem about the number of spanning trees in a graph, showing that this number can be computed in polynomial time from the determinant of a submatrix of the Laplacian matrix of the graph; specifically, the number is equal to ''any'' cofactor of the Laplacian matrix. Kirchhoff's theorem is a generalization of Cayley's formula which provides the number of spanning trees in a complete graph. Kirchhoff's theorem relies on the notion of the Laplacian matrix of a graph that is equal to the difference between the graph's degree matrix (a diagonal matrix with vertex degrees on the diagonals) and its adjacency matrix (a (0,1)-matrix with 1's at places corresponding to entries where the vertices are adjacent and 0's otherwise). For a given connected graph ''G'' with ''n'' labeled vertices, let ''λ''1, ''λ''2, ..., ''λn''−1 be the non-zer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles William Henry Kirchhoff
Charles William Henry Kirchhoff (March 28, 1853 – July 22, 1916) was a United States editor and steel expert. Biography Charles William Henry Kirchhoff was born in San Francisco, California on March 28, 1853. He attended school in the United States and Germany and was graduated from the Royal School of Mines at Clausthal, Germany, in 1874, taking the degree of mining engineer and metallurgist. During the next three years, he was chemist, assayer and assistant superintendent of the Delaware Lead Mills at Philadelphia. He began his career in technical journalism in 1876, when he covered the Centennial Exposition for British, German and Cape Town, South Africa, papers. He then joined the ''Metallurgical Review'' in 1877. He left that short-lived journal in 1878 to join the staff of the ''Iron Age''. He left ''Iron Age'' in 1881 to be managing editor of the ''Engineering and Mining Journal'', but returned to ''Iron Age'' in 1884. Four years later he became its editor-in-chief and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirchhoff's Laws (other)
Kirchhoff's laws, named after Gustav Kirchhoff, may refer to: * Kirchhoff's circuit laws in electrical engineering * Kirchhoff's law of thermal radiation * Kirchhoff equations in fluid dynamics * Kirchhoff's three laws of spectroscopy * Kirchhoff's law of thermochemistry See also * Kerckhoffs's principle Kerckhoffs's principle (also called Kerckhoffs's desideratum, assumption, axiom, doctrine or law) of cryptography was stated by Dutch-born cryptographer Auguste Kerckhoffs in the 19th century. The principle holds that a cryptosystem should be ..., of Auguste Kerckhoffs * List of scientific laws named after people * Ohm's law {{DEFAULTSORT:Kirchhoff's Laws ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Kirchhoff
Robert Kirchhoff (born May 7, 1968) is a Slovak independent film director, producer, cinematographer, and scriptwriter. film/director profiles at Biography Robert Kirchhoff was born in , Slovakia. Between 1995 and 2000 he studied film directing at the , where he graduated as M.A. (2000), later as Art. Dr. (2006) and tenured associate ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirchhoff (crater)
Kirchhoff is a small lunar impact crater that is located in the northern part of the Montes Taurus range. It was named after German physicist Gustav Kirchhoff. It lies to the west of the crater Newcomb, and southeast of the crater pair of Hall In architecture, a hall is a relatively large space enclosed by a roof and walls. In the Iron Age and early Middle Ages in northern Europe, a mead hall was where a lord and his retainers ate and also slept. Later in the Middle Ages, the gr ... and G. Bond. This is a circular, bowl-shaped feature that lies in the midst of rugged lunar terrain. The satellite crater Kirchhoff C adjoins the eastern rim. There is a low rise at the midpoint of the interior floor. Satellite craters By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Kirchhoff. References * * * * * * * * * * * {{Authority control Impact craters on the Moon Gusta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adolf Kirchhoff
Johann Wilhelm Adolf Kirchhoff (6 January 1826 – 26 February 1908) was a German classical scholar and epigraphist. Biography The son of historical painter Johann Jakob Kirchhoff, he was born in Berlin, and educated there. He then taught in various colleges until, in 1865, he was appointed professor of classical philology at the University of Berlin, where he remained for the rest of his life. Kirchhoff's scientific studies covered a wide range in linguistics, antiquities, and Greek epigraphy. He was elected a Foreign Honorary Member of the American Academy of Arts and Sciences in 1888. Writings *''Die Homerische Odyssee'' (1859), putting forward an entirely new theory as to the composition of the ''Odyssey'' *edition of Plotinus (1856) *edition of Euripides (1855 and 1877–1878), the first critical edition based on a careful collation of all the manuscripts *edition of Aeschylus (1880) *Hesiod (''Works and Days'', 1881) *Xenophon, ''Respublica Atheniensium'' (On the Athenian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kirchhoff Institute Of Physics
The Faculty of Physics and Astronomy is one of twelve faculties at the University of Heidelberg. It comprises the Kirchhoff Institute of Physics, the Institute of Physics, Theoretical Physics, Environmental Physics and Theoretical Astrophysics. Kirchhoff Institute of Physics The Kirchhoff-Institut für Physik (Kirchhoff Institute of Physics, KIP), built in 2002, is a research institute located in Heidelberg, Germany. It shares faculty with the physics and astronomy departments at the University of Heidelberg. The institute is named after Gustav Kirchhoff, who collaborated in Heidelberg in 1854 with Robert Bunsen in spectroscopic work. The scope of its research is broad. Many projects exist, from low temperature physics and neuronal information processing to surface physics. Facilities include (apart from several laboratories) a cleanroom, an ASIC laboratory, an experimental hall and, as it is also serves undergraduates, there are 2 auditoriums with a capacity of over 300 p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gottlieb Kirchhoff
Gottlieb Sigismund Constantin Kirchhoff (19 February 1764 – 14 February 1833) was a Russian chemist of German origin. In 1792–1802, Assistant Director and then Director of the Head Pharmacy at Saint Petersburg. Corresponding member (1807–1812) and since 1812 Full member of the Petersburg Academy of Sciences (Russia). In 1811, he became the first person to convert starch into a sugar (corn syrup), by heating it with sulfuric acid in acid-catalyzed reaction.See: * Scherer (1811"Kirchhof's entdeckte Zubereitung des Zuckers und Syrups aus Buchweizen"(Kirchhoff's discovery of a preparation of sugar and syrup from buckwheat), ''Bulletin des Neuesten und Wissenwürdigsten aus der Naturwissenschaft'' … (Bulletin of the most recent and most useful to know ewsfrom science … ), 9 : 262–263. * Kirchhoff (1811) ''Mémoires de l'Académie impériale des sciences de St. Pétersbourg'', 4 : 27.From page 27:''"Mr. l'Adjoint ''Kirchhoff'' présenta à la Conférence trois flacons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alfred Kirchhoff
Alfred Kirchhoff (23 May 1838 in Erfurt – 8 February 1907 in Mockau) was a German geographer and naturalist. Biography He was educated at Jena and Bonn, and for several years was an instructor at schools in Mülheim an der Ruhr and Erfurt. From 1871 to 1873 he was a lecturer on geography at the Kriegsakademie of Berlin, and in the latter year was appointed to the chair of geography in the University of Halle. He was an editor of th''Anleitung zur deutschen Landes- und Volksforschung'' He was elected member of the Academy of Sciences Leopoldina in 1878 and of the Royal Society of Arts and Sciences in Gothenburg in 1888. Selected writings * ''Schulbotanik'' (1865) – School botany. * ''Die Südseeinseln und der Südseehandel'', 1880 – The South Sea islands and trade. * ''Schulgeographie'', 1882 – School geography. * ''Allgemeine Erdkunde: Pflanzen- und Tierverbreitung'', with Julius von Hann and Eduard Bruckner Eduard Model Accessories is a Czech ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
