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Gottfried Möllenstedt
Gottfried Möllenstedt (14 September 1912 – 11 September 1997) was a German physicist and professor at the University of Tübingen, where he founded the Institute of Applied Physics in 1957, and served as rector from 1966 to 1968. Together with his doctoral student Heinrich Düker (1923–1985), in 1955 he invented the electron biprism, which is widely used in electron holography. Life Möllenstedt was the fourth of eight children of the teacher, cantor and vice-principal Johann Heinrich Möllenstedt; he had two sisters and five brothers. At first he wanted to become an aircraft engineer, but then, impressed by his teachers Walther Kossel and Eberhard Buchwald, turned to physics in 1934. Under Walther Kossel he obtained his diploma in engineering at the Gdańsk University of Technology in 1939, and received his doctorate on electron diffraction on 17 December 1940. On 11 October 1940, he married the teacher Dorothea Tanner. From 1939 to 1945 he was Kossel's research assistant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Versmold
Versmold (; ) is a town in Gütersloh (district), Gütersloh District in the German state of North Rhine-Westphalia. It is located some 30 km west of Bielefeld. History In 1096 Versmold was first mentioned in a document, and is thus one of the oldest known settlements in the region. The name "-mold" alludes to "melle", "mal" a location of a court. Situated between the bishoprics Osnabrück and Münster, the possession of Versmold was disputed for a long time in the high Middle Ages. The population tried to protect themselves as well as they could. The St. Petri church was built as a "Wehrkirche" for defense. After 1277, the situation changed when the counts of County of Ravensberg, Ravensberg acquired possession of the Versmold region. Versmold formed the westernmost town of the historic county of Ravensberg with its capital Bielefeld. After the War of the Jülich Succession in 1614 the county came to Brandenburg and later to Prussia. Within predominantly Catholic Westpha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thuringia
Thuringia (; officially the Free State of Thuringia, ) is one of Germany, Germany's 16 States of Germany, states. With 2.1 million people, it is 12th-largest by population, and with 16,171 square kilometers, it is 11th-largest in area. Erfurt is the capital and largest city. Other cities include Jena, Gera and Weimar. Thuringia is bordered by Bavaria, Hesse, Lower Saxony, Saxony, and Saxony-Anhalt. It has been known as "the green heart of Germany" () from the late 19th century due to its broad, dense forest. Most of Thuringia is in the Saale drainage basin, a bank (geography), left-bank tributary of the Elbe. Thuringia is home to the Rennsteig, Germany's best-known hiking, hiking trail. Its winter resort of Oberhof, Germany, Oberhof makes it a well-equipped winter sports destination – half of Germany's 136 Winter Olympics, Winter Olympic gold medals had been won by Thuringian athletes as of 2014. Thuringia was favoured by or was the birthplace of three key intellectu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1912 Births
This year is notable for Sinking of the Titanic, the sinking of the ''Titanic'', which occurred on April 15. In Albania, this leap year runs with only 353 days as the country achieved switching from the Julian to Gregorian Calendar by skipping 13 days. Friday, 30 November ''(Julian Calendar)'' immediately turned Saturday, 14 December 1912 ''(in the Gregorian Calendar)''. Events January * January 1 – The Republic of China (1912–49), Republic of China is established. * January 5 – The Prague Conference (6th All-Russian Conference of the Russian Social Democratic Labour Party) opens. * January 6 ** German Geophysics, geophysicist Alfred Wegener first presents his theory of continental drift. ** New Mexico becomes the 47th U.S. state. * January 8 – The African National Congress is founded as the South African Native National Congress, at the Waaihoek Wesleyan Church in Bloemfontein, to promote improved rights for Black people, black South Africans, with Joh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Körber European Science Prize
The Körber European Science Prize is a science and technology award, presented annually by the Körber Foundation in Hamburg, honoring outstanding scientists working in Europe for their promising research projects. The prize is endowed with 1 million euro (until 2018: 750,000 euro) and promotes research projects in the life sciences and physical sciences. History The prize was initiated by the entrepreneur Kurt A. Körber with the help of Reimar Lüst, the president of the Max Planck Society. The first award was in 1985. At first, European research teams were honored, but since 2005, only individuals qualify. Selection process Candidates for the prize need not be from Europe, but they must be living in Europe. Renowned scientists from all over Europe, grouped into two Search Committees, select promising candidates. The awards are annual and alternate between the life and physical sciences. Those who are shortlisted are then asked to submit a detailed proposal for a research pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physics World
''Physics World'' is the membership magazine of the Institute of Physics, one of the largest physical societies in the world. It is an international monthly magazine covering all areas of physics, pure and applied, and is aimed at physicists in research, industry, physics outreach, and education worldwide. Overview The magazine was launched in 1988 by IOP Publishing Ltd, under the founding editorship of Philip Campbell. The magazine is made available free of cost to members of the Institute of Physics, who can access a digital edition of the magazine; selected articles can be read by anyone for free online. It was redesigned in September 2005 and has an audited circulation of just under 35000. The current editor is Matin Durrani. Others on the team are Michael Banks (news editor) and Tushna Commissariat and Sarah Teah (features editors). Hamish Johnston, Margaret Harris and Tami Freeman are online editors. Alongside the print and online magazine, Physics World produces film ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-slit Experiment
In modern physics, the double-slit experiment demonstrates that light and matter can exhibit behavior of both classical particles and classical waves. This type of experiment was first performed by Thomas Young in 1801, as a demonstration of the wave behavior of visible light. In 1927, Davisson and Germer and, independently, George Paget Thomson and his research student Alexander Reid demonstrated that electrons show the same behavior, which was later extended to atoms and molecules. Thomas Young's experiment with light was part of classical physics long before the development of quantum mechanics and the concept of wave–particle duality. He believed it demonstrated that the Christiaan Huygens' wave theory of light was correct, and his experiment is sometimes referred to as Young's experiment or Young's slits. The experiment belongs to a general class of "double path" experiments, in which a wave is split into two separate waves (the wave is typically made of many photons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tungsten
Tungsten (also called wolfram) is a chemical element; it has symbol W and atomic number 74. It is a metal found naturally on Earth almost exclusively in compounds with other elements. It was identified as a distinct element in 1781 and first isolated as a metal in 1783. Its important ores include scheelite and wolframite, the latter lending the element its alternative name. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all known elements, melting at . It also has the highest boiling point, at . Its density is 19.254 g/cm3, comparable with that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material (under standard conditions, when uncombined), making it difficult to work into metal. However, pure single-crystalline tungsten is more ductile and can be cut with a hard-steel hacksaw. Tungsten occurs in many alloys ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plasmon
In physics, a plasmon is a quantum of plasma oscillation. Just as light (an optical oscillation) consists of photons, the plasma oscillation consists of plasmons. The plasmon can be considered as a quasiparticle since it arises from the quantization of plasma oscillations, just like phonons are quantizations of mechanical vibrations. Thus, plasmons are collective (a discrete number) oscillations of the free electron gas density. For example, at optical frequencies, plasmons can couple with a photon to create another quasiparticle called a plasmon polariton. The field of study and manipulation of plasmons is called plasmonics. Derivation The plasmon was initially proposed in 1952 by David Pines and David Bohm and was shown to arise from a Hamiltonian for the long-range electron-electron correlations. Since plasmons are the quantization of classical plasma oscillations, most of their properties can be derived directly from Maxwell's equations. Explanation Plasmons ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Zeiss AG
Zeiss ( ; ) is a German manufacturer of optical systems and optoelectronics, founded in Jena, Germany, in 1846 by optician Carl Zeiss. Together with Ernst Abbe (joined 1866) and Otto Schott (joined 1884) he laid the foundation for today's multinational company. The current company emerged from a reunification of Carl Zeiss companies in East and West Germany with a consolidation phase in the 1990s. ZEISS is active in four business segments with approximately equal revenue (Industrial Quality and Research, Medical Technology, Consumer Markets and Semiconductor Manufacturing Technology) in almost 50 countries, has 30 production sites and around 25 development sites worldwide. Carl Zeiss AG is the holding of all subsidiaries within Zeiss Group, of which Carl Zeiss Meditec AG is the only one that is traded at the stock market. Carl Zeiss AG is owned by the foundation Carl-Zeiss-Stiftung. The Zeiss Group has its headquarters in southern Germany, in the small town of Oberkochen, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habilitation
Habilitation is the highest university degree, or the procedure by which it is achieved, in Germany, France, Italy, Poland and some other European and non-English-speaking countries. The candidate fulfills a university's set criteria of excellence in research, teaching, and further education, which usually includes a dissertation. The degree, sometimes abbreviated ''Dr. habil''. (), ''dr hab.'' (), or ''D.Sc.'' ('' Doctor of Sciences'' in Russia and some CIS countries), is often a qualification for full professorship in those countries. In German-speaking countries it allows the degree holder to bear the title ''PD'' (for ). In a number of countries there exists an academic post of docent, appointment to which often requires such a qualification. The degree conferral is usually accompanied by a public oral defence event (a lecture or a colloquium) with one or more opponents. Habilitation is usually awarded 5–15 years after a PhD degree or its equivalent. Achieving this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tübingen
Tübingen (; ) is a traditional college town, university city in central Baden-Württemberg, Germany. It is situated south of the state capital, Stuttgart, and developed on both sides of the Neckar and Ammer (Neckar), Ammer rivers. about one in three of the 90,000 people living in Tübingen is a student. As of the 2018/2019 winter semester, 27,665 students attend the University of Tübingen, Eberhard Karl University of Tübingen. The city has the lowest median age in Germany, in part due to its status as a university city. As of December 31, 2015, the average age of a citizen of Tübingen is 39.1 years. Immediately north of the city lies the Schönbuch, a densely wooded nature park. The Swabian Alb mountains rise about (beeline Tübingen City to Roßberg - 869 m) to the southeast of Tübingen. The Ammer and Steinlach rivers are Tributary, tributaries of the Neckar river, which flows in an easterly direction through the city, just south of the Middle Ages, medieval old town. La ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eberhard Buchwald
Eberhard is an old Germanic name meaning the strength or courage of a wild boar. People First name *Eberhard of Friuli (815–866), Duke and key figure in the Carolingian Empire *Eberhard of Béthune (died 1212), Flemish grammarian *Eberhard I, Duke of Württemberg (1445–1496) *Eberhard II, Count of Württemberg (after 1315–1392) *Eberhard I, Count of Bonngau (died 937) *Eberhard III, Duke of Franconia (ca. 885–939) * Eberhard (Archbishop of Trier) (1010–1066) *Eberhard of Salzburg (died 1164), Bishop of Salzburg and saint * Eberhard Zacharias Munck af Rosenschöld (1775–1840), Swedish vaccine pioneer *Eberhard Anheuser (1806–1880), soap and candle maker, co-founder of Anheuser-Busch * Eberhard Wagner (* 1938), German linguist and author *Eberhard Weber (* 1940), German jazz musician and composer Last name *Eberhard family, a prominent Swiss industrialist family ( Eberhard & Co.) from Bern whose origin has been traced back to the 10th century **George-Emile Eberhard (18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
