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Ludwig Boll
Katharina Boll-Dornberger (2 November 1909 – 27 July 1981), also known as Käte Dornberger-Schiff, was an Austrian-German physicist and crystallographer. She is known for her work on order-disorder structures. Life Katharina Boll-Dornberger was born in Vienna in 1909 as the daughter of the university professor and Alice Friederike (Gertrude) Schiff. She studied physics and mathematics in Vienna and Göttingen. She wrote her dissertation under supervision of V. M. Goldschmidt on the crystal structure of water-free zinc sulfate in Göttingen and handed it in in Vienna in 1934. Afterwards, she conducted research in Philipp Gross's lab in Vienna. In 1937 she emigrated to England. In England, she worked with John D. Bernal, Nevill F. Mott, and Dorothy Hodgkin. She married Paul Dornberger in 1939. Her sons were born in 1943 and 1946. In 1946, she and her family returned to Germany. At first, she worked as a lecturer for physics and mathematics at the Hochschule für Baukunst in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Order-disorder Structures
In physics, the terms order and disorder designate the presence or absence of some symmetry or correlation in a many-particle system. In condensed matter physics, systems typically are ordered at low temperatures; upon heating, they undergo one or several phase transitions into less ordered states. Examples for such an order-disorder transition are: * the melting of ice: solid-liquid transition, loss of crystalline order; * the demagnetization of iron by heating above the Curie temperature: ferromagnetic-paramagnetic transition, loss of magnetic order. The degree of freedom that is ordered or disordered can be translational (crystalline ordering), rotational ( ferroelectric ordering), or a spin state (magnetic ordering). The order can consist either in a full crystalline space group symmetry, or in a correlation. Depending on how the correlations decay with distance, one speaks of long range order or short range order. If a disordered state is not in thermodynamic equilibrium, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diffraction
Diffraction is defined as the interference or bending of waves around the corners of an obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a secondary source of the propagating wave. Italian scientist Francesco Maria Grimaldi coined the word ''diffraction'' and was the first to record accurate observations of the phenomenon in 1660. In classical physics, the diffraction phenomenon is described by the Huygens–Fresnel principle that treats each point in a propagating wavefront as a collection of individual spherical wavelets. The characteristic bending pattern is most pronounced when a wave from a coherent source (such as a laser) encounters a slit/aperture that is comparable in size to its wavelength, as shown in the inserted image. This is due to the addition, or interference, of different points on the wavefront (or, equivalently, each wavelet) that travel by paths of d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientists From Vienna
A scientist is a person who conducts scientific research to advance knowledge in an area of the natural sciences. In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science. Though Thales (circa 624-545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods,Frank N. Magill''The Ancient World: Dictionary of World Biography'', Volume 1 Routledge, 2003 it was not until the 19th century that the term ''scientist'' came into regular use after it was coined by the theologian, philosopher, and historian of science William Whewell in 1833. In modern times, many scientists have advanced degrees in an area of science and pursue careers in various sectors of the economy such as academia, industry, government, and nonprofit environments.'''' History The roles ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1909 Births
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 Slipk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1981 Deaths
Events January * January 1 ** Greece enters the European Economic Community, predecessor of the European Union. ** Palau becomes a self-governing territory. * January 10 – Salvadoran Civil War: The Farabundo Martí National Liberation Front, FMLN launches its first major offensive, gaining control of most of Morazán Department, Morazán and Chalatenango Department, Chalatenango departments. * January 15 – Pope John Paul II receives a delegation led by Polish Solidarity (Polish trade union), Solidarity leader Lech Wałęsa at the Vatican City, Vatican. * January 20 – Iran releases the 52 Americans held for 444 days, minutes after Ronald Reagan is First inauguration of Ronald Reagan, sworn in as the 40th President of the United States, ending the Iran hostage crisis. * January 21 – The first DMC DeLorean, DeLorean automobile, a stainless steel sports car with gull-wing doors, rolls off the production line in Dunmurry, Northern Ireland. * January 24 – An 1981 Dawu ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neues Deutschland
''Neues Deutschland'' (''nd''; en, New Germany, sometimes stylized in lowercase letters) is a left-wing German daily newspaper, headquartered in Berlin. For 43 years it was the official party newspaper of the Socialist Unity Party of Germany (SED), which governed East Germany (officially known as the German Democratic Republic), and as such served as one of the party's most important organs. It originally had a Stalinist political stance; it retained a Marxist-Leninist stance until German reunification in 1990. The ''Neues Deutschland'' that existed in East Germany had a circulation of 1.1 million as of 1989 and was the communist party's main way to show citizens its stances and opinions about politics, economics, etc. It was regarded by foreign countries as the communist regime's diplomatic voice. Since the fall of the Berlin Wall, the ''Neues Deutschland'' has lost 98 percent of its readership and has a circulation of 17,186 as of 2021. Between 2019 and 2020 the number of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter De Gruyter GmbH & Co KG
Walter de Gruyter GmbH, known as De Gruyter (), is a German scholarly publishing house specializing in academic literature. History The roots of the company go back to 1749 when Frederick the Great granted the Königliche Realschule in Berlin the royal privilege to open a bookstore and "to publish good and useful books". In 1800, the store was taken over by Georg Reimer (1776–1842), operating as the ''Reimer'sche Buchhandlung'' from 1817, while the school’s press eventually became the ''Georg Reimer Verlag''. From 1816, Reimer used the representative Sacken'sche Palace on Berlin's Wilhelmstraße for his family and the publishing house, whereby the wings contained his print shop and press. The building became a meeting point for Berlin salon life and later served as the official residence of the president of Germany. Born in Ruhrort in 1862, Walter de Gruyter took a position with Reimer Verlag in 1894. By 1897, at the age of 35, he had become sole proprietor of the h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berliner Zeitung
The ''Berliner Zeitung'' (, ''Berlin Newspaper'') is a daily newspaper based in Berlin, Germany. Founded in East Germany in 1945, it is the only East German paper to achieve national prominence since reunification. It is published by Berliner Verlag. History and profile ''Berliner Zeitung'' was first published on 21 May 1945 in East Berlin. The paper, a center-left daily, is published by Berliner Verlag. After the fall of the Berlin Wall, the paper was bought by Gruner + Jahr and the British publisher Robert Maxwell. Gruner + Jahr later became sole owners and relaunched it in 1997 with a completely new design. A stated goal was to turn the ''Berliner Zeitung'' into "Germany's ''Washington Post''". The daily says its journalists come "from east and west", and it styles itself as a "young, modern and dynamic" paper for the whole of Germany. It is the only East German paper to achieve national prominence since reunification. In 2003, the ''Berliner'' was Berlin's largest subscr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acta Crystallographica
''Acta Crystallographica'' is a series of peer-reviewed scientific journals, with articles centred on crystallography, published by the International Union of Crystallography (IUCr). Originally established in 1948 as a single journal called ''Acta Crystallographica'', there are now six independent ''Acta Crystallographica'' titles: *'' Acta Crystallographica Section A: Foundations and Advances'' *'' Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials'' *'' Acta Crystallographica Section C: Structural Chemistry'' *'' Acta Crystallographica Section D: Structural Biology'' *'' Acta Crystallographica Section E: Crystallographic Communications'' *'' Acta Crystallographica Section F: Structural Biology Communications'' ''Acta Crystallographica'' has been noted for the high quality of the papers that it produces, as well as the large impact that its papers have had on the field of crystallography. The current six journals form part of the journal portf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akademie-Verlag
:''There also were unrelated publishing houses in Stuttgart and in (East-)Berlin, and there is the (JAVG).'' Akademie Verlag (AV) is a German scientific and academic publishing company, founded in 1946 in the Soviet-occupied eastern part of divided Berlin to facilitate the publication of works by and for the German Academy of Sciences Berlin. Under the communist German Democratic Republic, from 1949 to 1990, it remained closely connected to the academy; unlike other publishing houses, it was not subject to direct control by the GDR ministry of culture. Still, it was regarded with suspicion in the West due to communist influence. Most of the output was sold in East Germany and the Eastern Bloc. Since 1957, Gottfried Wilhelm Leibniz, the founder of the Prussian Academy of Sciences in 1700, and „theoria cum praxi“ are used as symbols. Since the 1970s, several volumes of the Nicolaus Copernicus Gesamtausgabe (complete edition) have been published by Akademie Verlag, cove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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