|
Sommerfeld (other)
Sommerfeld as a surname may refer to: *Arnold Sommerfeld (1868–1951), German physicist * Felix A. Sommerfeld (1879–after 1930), German secret service agent *Sara Sommerfeld (born 28 October 1977), Swedish actress Sommerfeld as a place may refer to: *Sommerfeld, the German name of Lubsko, Poland *Sommerfeld, a small town, now a district of Leipzig, Germany Sommerfeld may also refer to: *Sommerfeld (crater), a large lunar crater *Sommerfeld radiation condition, used to solve the Helmholtz equation * Sommerfeld Tracking, a prefabricated airfield surface, nicknamed 'tin lino' *Sommerfeld–Kossel displacement law, in atomic physics * Grimm–Sommerfeld rule, in quantum chemistry *''Dr. Sommerfeld – Neues vom Bülowbogen'', a German television series See also * List of things named after Arnold Sommerfeld * Sommerfeld Mennonites The Sommerfelders, also called Sommerfeld Mennonites or Sommerfeld Mennonite Church (german: Sommerfelder Mennoniten-Gemeinde), are a subgroup of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Sommerfeld
Arnold Johannes Wilhelm Sommerfeld, (; 5 December 1868 – 26 April 1951) was a German theoretical physicist who pioneered developments in atomic and quantum physics, and also educated and mentored many students for the new era of theoretical physics. He served as doctoral supervisor for many Nobel Prize winners in physics and chemistry (only J. J. Thomson's record of mentorship is comparable to his). He introduced the second quantum number (azimuthal quantum number) and the third quantum number (magnetic quantum number). He also introduced the fine-structure constant and pioneered X-ray wave theory. Early life and education Sommerfeld was born in 1868 to a family with deep ancestral roots in Prussia. His mother Cäcilie Matthias (1839–1902) was the daughter of a Potsdam builder. His father Franz Sommerfeld (1820–1906) was a physician from a leading family in Königsberg, where Arnold's grandfather had resettled from the hinterland in 1822 for a career as Court Postal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felix A
Felix may refer to: * Felix (name), people and fictional characters with the name Places * Arabia Felix is the ancient Latin name of Yemen * Felix, Spain, a municipality of the province Almería, in the autonomous community of Andalusia, Spain * St. Felix, Prince Edward Island, a rural community in Prince County, Prince Edward Island, Canada. * Felix, Ontario, an unincorporated place and railway point in Northeastern Ontario, Canada * St. Felix, South Tyrol, a village in South Tyrol, in northern Italy. * Felix, California, an unincorporated community in Calaveras County Music * Felix (band), a British band * Felix (musician), British DJ * Félix Award, a Quebec music award named after Félix Leclerc Business * Felix (pet food), a brand of cat food sold in most European countries * AB Felix, a Swedish food company * Felix Bus Services of Derbyshire, England * Felix Airways, an airline based in Yemen Science and technology * Apache Felix, an open source OSGi framewo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sara Sommerfeld
Sara Anita Sommerfeld (born 28 October 1977) is a Swedish actress. Sara Sommerfeld was born in Sollentuna north of Stockholm. Her parents are Polish-Jewish immigrants who came to Sweden in 1968. Sara Sommerfeld started as a child actress at age ten. After she graduated from the Swedish National Theatre Academy in Gothenburg in 2001, she has acted in several feature films, TV series, radio shows and voice overs, and performed at different theatres in Sweden. Filmography * '' Maskrosbarn'' (1989, TV series) * '' Kaninmannen'' (1990) * '' Den goda viljan'' (1992) * ''Sökarna'' (1993) * '' Free Willy 2: The Adventure Home'' (1995) (Swedish voice) * ''Vänner och Fiender'' (1996, TV series) * ''Noll tolerans'' (1999) (not credited) * ''Vingar av glas'' (2000) * ''Atlantis: The Lost Empire'' (2001) (Swedish voice) * '' Minoes'' (2001) (Swedish voice) * ''Tsatsiki – vänner för alltid'' (2001) * '' Hem till Midgård'' (2003, TV series) * '' Hjärtslag'' (2004) * '' Shark T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lubsko
Lubsko (german: Sommerfeld, Lower Sorbian language, Lower Sorbian: ''Žemŕ''), formerly Zemsz, is a town in Żary County in the Lubusz Voivodeship in western Poland. It is the administrative seat of the Gmina Lubsko and has a population of 13,921 (2019). History In the early Middle Ages there was a West Slavs, West Slavic or Lechitic gród, stronghold here, followed by a market settlement on the border between Kingdom of Poland (1025-1385), Poland and Lusatia. Probably its oldest name was ''Żemrje''. It is located within Lower Lusatia, but at some times it also belonged to Silesia, e.g. under the Polish rulers Bolesław the Brave and Henry the Bearded. The town was first documented in 1258 and received German town law, town privileges by the March of Lusatia, Lusatian margrave Henry III, Margrave of Meissen, Henry III of Wettin in 1283. The name ''Sommerfeld'', German for "summer field", already appeared in an 1106 deed allegedly issued by margrave Henry I, Margrave of the Saxo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leipzig
Leipzig ( , ; Upper Saxon: ) is the most populous city in the German state of Saxony. Leipzig's population of 605,407 inhabitants (1.1 million in the larger urban zone) as of 2021 places the city as Germany's eighth most populous, as well as the second most populous city in the area of the former East Germany after (East) Berlin. Together with Halle (Saale), the city forms the polycentric Leipzig-Halle Conurbation. Between the two cities (in Schkeuditz) lies Leipzig/Halle Airport. Leipzig is located about southwest of Berlin, in the southernmost part of the North German Plain (known as Leipzig Bay), at the confluence of the White Elster River (progression: ) and two of its tributaries: the Pleiße and the Parthe. The name of the city and those of many of its boroughs are of Slavic origin. Leipzig has been a trade city since at least the time of the Holy Roman Empire. The city sits at the intersection of the Via Regia and the Via Imperii, two important medieval trad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sommerfeld (crater)
Sommerfeld is a large lunar impact crater that is located in the far northern latitudes of the Moon. It lies on the far side, and can only be viewed from orbit. To the south of Sommerfeld is Rowland, a crater about the same size as Sommerfeld. Southeast of Sommerfeld is the huge walled plain Birkhoff. This crater belongs to a class of lunar features sometimes termed a walled plain – that is, it consists of a relatively flat interior surrounded by a ring mountain. The outer rim is only moderately eroded and it retains some traces of a terrace Terrace may refer to: Landforms and construction * Fluvial terrace, a natural, flat surface that borders and lies above the floodplain of a stream or river * Terrace, a street suffix * Terrace, the portion of a lot between the public sidewalk an ... structure, albeit softened and rounded. Several small craterlets lie along the rim edge and inner wall along the south and southeast. A merged pair of small craters is attached to the south ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sommerfeld Radiation Condition
In applied mathematics, the Sommerfeld radiation condition is a concept from theory of differential equations and scattering theory used for choosing a particular solution to the Helmholtz equation. It was introduced by Arnold Sommerfeld in 1912 and is closely related to the limiting absorption principle (1905) and the limiting amplitude principle (1948). Formulation Arnold Sommerfeld defined the condition of radiation for a scalar field satisfying the Helmholtz equation as : "the sources must be sources, not sinks of energy. The energy which is radiated from the sources must scatter to infinity; no energy may be radiated from infinity into ... the field."A. Sommerfeld, ''Partial Differential Equations in Physics'', Academic Press, New York, New York, 1949. Mathematically, consider the inhomogeneous Helmholtz equation : (\nabla^2 + k^2) u = -f \text \mathbb R^n where n=2, 3 is the dimension of the space, f is a given function with compact support representing a bounded sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sommerfeld–Kossel Displacement Law
The Sommerfeld–Kossel displacement law states that the first spark (singly ionized) spectrum of an element is similar in all details to the arc (neutral) spectrum of the element preceding it in the periodic table. Likewise, the second (doubly ionized) spark spectrum of an element is similar in all details to the first (singly ionized) spark spectrum of the element preceding it, or to the arc (neutral) spectrum of the element with atomic number two less, and so forth.Herzberg, 1945, p. 81. Hence, the spectra of C I (neutral carbon), N II (singly ionized nitrogen), and O III (doubly ionized oxygen) atoms are similar, apart from shifts of the spectra to shorter wavelengths. C I, N II, and O III all have the same number of electrons, six, and the same ground-state electron configuration: :1s^2\, 2s^2\, 2p^2\, ^3P_0\,. The law was discovered by and named after Arnold Sommerfeld Arnold Johannes Wilhelm Sommerfeld, (; 5 December 1868 – 26 April 1951) was a German theoretical p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grimm–Sommerfeld Rule
In chemistry, the Grimm–Sommerfeld rule predicts that binary compounds with covalent character that have an average of 4 electrons per atom will have structures where both atoms are tetrahedrally coordinated (e.g. have the wurtzite structure). Examples are silicon carbide, the III-V semiconductors indium phosphide and gallium arsenide, the II-VI semiconductors, cadmium sulfide, cadmium selenide. Gorynova expanded the scope of the rules to include ternary compounds where the average number of valence electrons per atom was four. Examples of this are the I-IV2-V3 CuGe2P3 compound which has a zincblende structure. Compounds or phases that obey the Grimm–Sommerfeld rule are termed Grimm–Sommerfeld compounds or phases.Concise Encyclopedia Chemistry, Mary Eagleson, Walter de Gruyter, 1994 The rule has also been extended to predict bond lengths in Grimm–Sommerfeld compounds. When the sum of the atomic numbers is the same the bond lengths are the same.Ulrich Müller, "Inorg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Things Named After Arnold Sommerfeld
256px, Arnold Sommerfeld introduced the fine-structure constant ''α'' in 1916, which became known as Sommerfeld's constant. {{Short description, none Physics and mathematics Arnold Sommerfeld was a German theoretical physicist whom the following is named after: * Sommerfeld coefficient * Sommerfeld constant (''α'') * Sommerfeld expansion * Sommerfeld effect * Sommerfeld identity * Sommerfeld number * Sommerfeld parameter * Sommerfeld radiation condition * Sommerfeld's approximation * Sommerfeld–Goubau line * Sommerfeld–Kossel displacement law * Sommerfeld–Runge method * Sommerfeld–Watson representation * Sommerfeld–Wilson ratio * Sommerfeld–Zenneck surface wave * Bohr–Sommerfeld model ** Sommerfeld–Wilson quantization * Drude–Sommerfeld model * Gamow–Sommerfeld factor * Grimm–Sommerfeld rule * Orr–Sommerfeld equation * Rayleigh–Sommerfeld diffraction theory Astronomical objects * Sommerfeld crater * 32809 Sommerfeld, minor planet Ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sommerfeld Mennonites
The Sommerfelders, also called Sommerfeld Mennonites or Sommerfeld Mennonite Church (german: Sommerfelder Mennoniten-Gemeinde), are a subgroup of the so-called Russian Mennonites that took this name in Canada in 1894, coming originally from the Bergthal Colony in the Russian Empire. Many of them left Canada for Latin America starting in the early 1920s. They now live in Canada, Mexico, Paraguay and Bolivia. In 1985 they had a total population of about 5,400 people in Manitoba and Saskatchewan in Canada and in 1987 they had 10 colonies in Latin America with a total population of about 7,500 people. at . See also *[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
