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Max Steenbeck
Max Christian Theodor Steenbeck (21 March 1904 – 15 December 1981) was a German physicist who worked at the '' Siemens-Schuckertwerke'' in his early career, during which time he invented the betatron in 1934. He was taken to the Soviet Union after World War II, and he contributed to the Soviet atomic bomb project. In 1955, he returned to East Germany to continue a career in nuclear physics. Early life Steenbeck was born in Kiel. He studied physics and chemistry at the University of Kiel from 1922 to 1927. He completed his thesis on x-rays under Walther Kossel; he submitted the thesis in 1927/1928 and his doctorate was awarded in January 1929. While a student at Kiel, he formulated the concept of the cyclotron. Career Early years From 1927 to 1945, Steenbeck was a physicist at the '' Siemens-Schuckertwerke'' in Berlin. From 1934, he was a laboratory director, and it was in that year that he submitted a patent for the betatron. In 1943, he was appointed technical dir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bundesarchiv Bild 183-J0312-0025-001, Berlin, 22
The German Federal Archives or Bundesarchiv (BArch) (german: Bundesarchiv) are the National Archives of Germany. They were established at the current location in Koblenz in 1952. They are subordinated to the Federal Commissioner for Culture and the Media (Claudia Roth since 2021) under the German Chancellery, and before 1998, to the Federal Ministry of the Interior (Germany), Federal Ministry of the Interior. On 6 December 2008, the Archives donated 100,000 photos to the public, by making them accessible via Wikimedia Commons. History The federal archive for institutions and authorities in Germany, the first precursor to the present-day Federal Archives, was established in Potsdam, Brandenburg in 1919, a later date than in other European countries. This national archive documented German government dating from the founding of the North German Confederation in 1867. It also included material from the older German Confederation and the Imperial Chamber Court. The oldest documents i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volkssturm
The (; "people's storm") was a levée en masse national militia established by Nazi Germany during the last months of World War II. It was not set up by the German Army, the ground component of the combined German ''Wehrmacht'' armed forces, but by the Nazi Party on the orders of Adolf Hitler and established on 25 September 1944. It was staffed by conscripting males between the ages of 16 and 60 years, who were not already serving in some military unit. The ''Volkssturm'' comprised one of the final components of the total war promulgated by Propaganda Minister Joseph Goebbels, part of a Nazi endeavor to overcome their enemies' military strength through force of will. ''Volkssturm'' units fought unsuccessful futile battles against the Allied forces at the end of the war and on several occasions, its members participated in atrocities accompanied by German civilians and the Hitler Youth, which were overseen by members of the SS or Gau leaders. Origins and organization The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be Boundaries between the continents of Earth#Asia and Europe, separated from Asia by the drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Virginia
The University of Virginia (UVA) is a Public university#United States, public research university in Charlottesville, Virginia. Founded in 1819 by Thomas Jefferson, the university is ranked among the top academic institutions in the United States, with College admissions in the United States, highly selective admission. Set within the The Lawn, Academical Village, a World Heritage Site, UNESCO World Heritage Site, the university is referred to as a "Public Ivy" for offering an academic experience similar to that of an Ivy League university. It is known in part for certain rare characteristics among public universities such as #1800s, its historic foundations, #Honor system, student-run academic honor code, honor code, and Secret societies at the University of Virginia, secret societies. The original governing Board of Visitors included three List of presidents of the United States, U.S. presidents: Thomas Jefferson, Jefferson, James Madison, and James Monroe. The latter as si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zippe-type Centrifuge
The Zippe-type centrifuge is a gas centrifuge designed to enrich the rare fissile isotope uranium-235 (235U) from the mixture of isotopes found in naturally occurring uranium compounds. The isotopic separation is based on the slight difference in mass of the isotopes. The Zippe design was originally developed in the Soviet Union by a team led by 60 Austrian and German scientists and engineers captured after World War II, working in detention. In the West (and now generally) the type is known by the name of the man who recreated the technology after his return to the West in 1956, based on his recollection of his work in (and contributions to) the Soviet program, Gernot Zippe. To the extent that it might be referred to in Soviet/Russian usage by any one person's name, it was known (at least at a somewhat earlier stage of development) as a Kamenev centrifuge (after Evgeni Kamenev).Oleg Bukharin, OlegRussia’s Gaseous Centrifuge Technology and Uranium Enrichment Complex 2004. Backg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Krasnogorsk, Moscow Oblast
Krasnogorsk (russian: Красного́рск, ) is a city and the administrative center of Krasnogorsky District in Moscow Oblast, Russia, located on the Moskva River, adjacent to the northwestern boundary of Moscow. Population: History An urban-type settlement was established here in 1932, to which town status was granted in 1940. In the 1940s, the Antifascist Central School, in which many foreign Communists studied and lectured, was located at Krasnogorsk. After the war, the German V2 rocket scientists which the Soviet Army had captured were settled here with their families. Administrative and municipal status Within the framework of administrative divisions, Krasnogorsk serves as the administrative center of Krasnogorsky District.Resolution #123-PG As an administrative division, it is, together with two rural localities, incorporated within Krasnogorsky District as the Town of Krasnogorsk. As a municipal division, the Town of Krasnogorsk is incorporated within Kra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous city and state. A landlocked country, Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The country occupies an area of and has a population of 9 million. Austria emerged from the remnants of the Eastern and Hungarian March at the end of the first millennium. Originally a margraviate of Bavaria, it developed into a duchy of the Holy Roman Empire in 1156 and was later made an archduchy in 1453. In the 16th century, Vienna began serving as the empire's administrative capital and Austria thus became the heartland of the Habsburg monarchy. After the dissolution of the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gernot Zippe
Gernot Zippe (November 1917 – 7 May 2008) was an Austrian born German mechanical engineer who is widely credited with leading the team which developed the Zippe-type centrifuge, a centrifuge machine for the enrichment and collection of Uranium-235, during his time in the Soviet program of nuclear weapons. Early life and World War II Zippe was born in Varnsdorf, Austria-Hungary (nowadays Czech Republic) in 1917. Zippe studied and graduated with B.Sc. Physics at the University of Vienna in 1938, and served in the Luftwaffe as a flight instructor and a researcher on radar and airplane propellers. In 1941, Zippe received his B.S. in mechanical engineering, and M.Sc. in 1943 in the same discipline. While doing his post doctoral research at the University of Vienna, Zippe participated in Germany's nuclear weapons project in the 1940s. He was the junior research team member of the isotope separation project led by Klaus Clusius at the Ludwig Maximilian University of Munich. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite. In nature, uranium is found as uranium-238 (99. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotope Separation
Isotope separation is the process of concentrating specific isotopes of a chemical element by removing other isotopes. The use of the nuclides produced is varied. The largest variety is used in research (e.g. in chemistry where atoms of "marker" nuclide are used to figure out reaction mechanisms). By tonnage, separating natural uranium into enriched uranium and depleted uranium is the largest application. In the following text, mainly the uranium enrichment is considered. This process is crucial in the manufacture of uranium fuel for nuclear power plants, and is also required for the creation of uranium-based nuclear weapons. Plutonium-based weapons use plutonium produced in a nuclear reactor, which must be operated in such a way as to produce plutonium already of suitable isotopic mix or ''grade''. While different chemical elements can be purified through chemical reaction, chemical processes, isotopes of the same element have nearly identical chemical properties, which makes this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrifuge
A centrifuge is a device that uses centrifugal force to separate various components of a fluid. This is achieved by spinning the fluid at high speed within a container, thereby separating fluids of different densities (e.g. cream from milk) or liquids from solids. It works by causing denser substances and particles to move outward in the radial direction. At the same time, objects that are less dense are displaced and moved to the centre. In a laboratory centrifuge that uses sample tubes, the radial acceleration causes denser particles to settle to the bottom of the tube, while low-density substances rise to the top. A centrifuge can be a very effective filter that separates contaminants from the main body of fluid. Industrial scale centrifuges are commonly used in manufacturing and waste processing to sediment suspended solids, or to separate immiscible liquids. An example is the cream separator found in dairies. Very high speed centrifuges and ultracentrifuges able to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sukhumi
Sukhumi (russian: Суху́м(и), ) or Sokhumi ( ka, სოხუმი, ), also known by its Abkhaz name Aqwa ( ab, Аҟәа, ''Aqwa''), is a city in a wide bay on the Black Sea's eastern coast. It is both the capital and largest city of the Republic of Abkhazia, which has controlled it since the Abkhazia war in 1992–93. However, internationally Abkhazia is considered part of Georgia. The city, which has an airport, is a port, major rail junction and a holiday resort because of its beaches, sanatoriums, mineral-water spas and semitropical climate. It is also a member of the International Black Sea Club. Sukhumi's history can be traced to the 6th century BC, when it was settled by Greeks, who named it Dioscurias. During this time and the subsequent Roman period, much of the city disappeared under the Black Sea. The city was named Tskhumi when it became part of the Kingdom of Abkhazia and then the Kingdom of Georgia. Contested by local princes, it became part of the Otto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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