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SS Bremen (1928)
SS ''Bremen'' was a German-built ocean liner constructed for the German shipping company Norddeutscher Lloyd (NDL) to work the transatlantic crossing, transatlantic sea route. Launched in 1928, ''Bremen'' was notable for her high-speed engines and low, streamlined profile. At the time of her construction, she and her sister ship were the two most advanced high-speed steam turbine ocean liners of their day. The German pair sparked an international competition in the building of large, fast, luxurious ocean liners that were national symbols and points of prestige during the pre-war years of the 1930s. She held the Blue Riband, and was the fourth ship of NDL to carry the name ''Bremen''. History ''Bremen'' and her sister were designed to have a cruising speed of , allowing a crossing time of five days. This speed enabled Norddeutscher Lloyd to run regular weekly crossings with two ships, a feat that normally required three. It was claimed that ''Bremen'' briefly reached speeds of ...
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Bremen (other)
Bremen is a city in northwestern Germany. Bremen may also refer to: Places Germany * Bremen (state), a federal state in Germany * Prince-Archbishopric of Bremen, a historical state * Bremen, Geisa, Wartburgkreis, Thuringia, Germany United States * Bremen, Alabama * Bremen, Georgia * Bremen, Jo Daviess County, Illinois * Bremen, Randolph County, Illinois * Bremen Precinct, Randolph County, Illinois * Bremen, Indiana * Bremen, Kansas * Bremen, Kentucky * Bremen, Maine * Bremen, North Dakota * Bremen, Ohio Elsewhere * Bremen Island, Antarctica * Bremen, Saskatchewan, Canada * Bremen Soviet Republic, a short-lived, unrecognized state in 1919 Arts and entertainment * Bremen (album), ''Bremen'' (album), by Kenshi Yonezu, 2015 * ''Bremen'', a manga series by Haruto Umezawa * Bremen (Shannara), a fictional character People * Adam of Bremen, 11th century German medieval chronicler * Barry Bremen (1947–2011), known as The Great Imposter * Wiel Bremen (1925–2014), Dutch ...
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Bundesarchiv Bild 102-06403, Bremen, Stapellauf Des Dampfers "Bremen"
The German Federal Archives or Bundesarchiv (BArch) (, lit. "Federal Archive") 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. 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 in this collection dated back to the y ...
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Luft Hansa
''Deutsche Luft Hansa A.G.'' (from 1933 styled as ''Deutsche Lufthansa'' and also known as ''Luft Hansa'', ''Lufthansa'', or DLH) was a German airline. It served as flag carrier of the country during the later years of the Weimar Republic and throughout Nazi Germany, when it had close links to the Nazi Party. Although Deutsche Luft Hansa was the forerunner of modern German airline Lufthansa (founded in 1953) and both airlines share the same logo, there is no legal connection between the two. However, the new Lufthansa took over staff from the old airline and claims DLH's legacy. For this reason it is controversial in the historical reappraisal to what extent the modern Lufthansa should confess to crimes committed by the old airline. History 1920s Deutsche Luft Hansa was founded on 6 January 1926 in Berlin. The name of the company means "German Hansa of the Air". The Hansa or Hanseatic League dominated maritime trade in the Baltic Sea area for hundreds of years, and is well reg ...
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SS BREMEN 1929 Katapultflug First Eastbound Flight Cover
The ''Schutzstaffel'' (; ; SS; also stylised with SS runes as ''ᛋᛋ'') was a major paramilitary organisation under Adolf Hitler and the Nazi Party in Nazi Germany, and later throughout German-occupied Europe during World War II. It began with a small guard unit known as the ''Saal-Schutz'' ("Hall Security") made up of party volunteers to provide security for party meetings in Munich. In 1925, Heinrich Himmler joined the unit, which had by then been reformed and given its final name. Under his direction (1929–1945) it grew from a small paramilitary formation during the Weimar Republic to one of the most powerful organisations in Nazi Germany. From the time of the Nazi Party's rise to power until the regime's collapse in 1945, the SS was the foremost agency of security, mass surveillance, and state terrorism within Germany and German-occupied Europe. The two main constituent groups were the '' Allgemeine SS'' (General SS) and ''Waffen-SS'' (Armed SS). The ''Allgemeine ...
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Diesel Engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compression (physics), compression; thus, the diesel engine is called a compression-ignition engine (CI engine). This contrasts with engines using spark plug-ignition of the air-fuel mixture, such as a petrol engine (gasoline engine) or a gas engine (using a gaseous fuel like natural gas or liquefied petroleum gas). Introduction Diesel engines work by compressing only air, or air combined with residual combustion gases from the exhaust (known as exhaust gas recirculation, "EGR"). Air is inducted into the chamber during the intake stroke, and compressed during the compression stroke. This increases air temperature inside the Cylinder (engine), cylinder so that atomised diesel fuel injected into the combustion chamber ignites. The torque a dies ...
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Propeller
A propeller (often called a screw if on a ship or an airscrew if on an aircraft) is a device with a rotating hub and radiating blades that are set at a pitch to form a helical spiral which, when rotated, exerts linear thrust upon a working fluid such as water or air. Propellers are used to pump fluid through a pipe or duct, or to create thrust to propel a boat through water or an aircraft through air. The blades are shaped so that their rotational motion through the fluid causes a pressure difference between the two surfaces of the blade by Bernoulli's principle which exerts force on the fluid. Most marine propellers are screw propellers with helical blades rotating on a propeller shaft (ship), propeller shaft with an approximately horizontal axis. History Early developments The principle employed in using a screw propeller is derived from stern sculling. In sculling, a single blade is moved through an arc, from side to side taking care to keep presenting the blade to the wat ...
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Bar (unit)
The bar is a metric unit of pressure defined as 100,000  Pa (100 kPa), though not part of the International System of Units (SI). A pressure of 1 bar is slightly less than the current average atmospheric pressure on Earth at sea level (approximately 1.013 bar). By the barometric formula, 1 bar is roughly the atmospheric pressure on Earth at an altitude of 111 metres at 15 °C. The bar and the millibar were introduced by the Norwegian meteorologist Vilhelm Bjerknes, who was a founder of the modern practice of weather forecasting, with the bar defined as one megadyne per square centimetre. The SI brochure, despite previously mentioning the bar, now omits any mention of it.. The bar has been legally recognised in countries of the European Union since 2004. British Standard BS 350:2004 ''Conversion Factors for Units''. The US National Institute of Standards and Technology (NIST) deprecates its use except for "limited use in meteorology" and lists ...
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Standard Atmosphere (unit)
The standard atmosphere (symbol: atm) is a unit of pressure defined as Pa. It is sometimes used as a ''reference pressure'' or ''standard pressure''. It is approximately equal to Earth's average atmospheric pressure at sea level. History The standard atmosphere was originally defined as the pressure exerted by a 760 mm column of mercury at and standard gravity (''g''n = ). It was used as a reference condition for physical and chemical properties, and the definition of the centigrade temperature scale set 100 °C as the boiling point of water at this pressure. In 1954, the 10th General Conference on Weights and Measures (CGPM) adopted ''standard atmosphere'' for general use and affirmed its definition of being precisely equal to dynes per square centimetre (). This defined pressure in a way that is independent of the properties of any particular substance. In addition, the CGPM noted that there had been some misapprehension that the previous definition (from the 9th CGPM ...
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Steam Turbine
A steam turbine or steam turbine engine is a machine or heat engine that extracts thermal energy from pressurized steam and uses it to do mechanical work utilising a rotating output shaft. Its modern manifestation was invented by Sir Charles Parsons in 1884. It revolutionized marine propulsion and navigation to a significant extent. Fabrication of a modern steam turbine involves advanced metalwork to form high-grade steel alloys into precision parts using technologies that first became available in the 20th century; continued advances in durability and efficiency of steam turbines remains central to the energy economics of the 21st century. The largest steam turbine ever built is the 1,770 MW Arabelle steam turbine built by Arabelle Solutions (previously GE Steam Power), two units of which will be installed at Hinkley Point C Nuclear Power Station, England. The steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the u ...
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Boiler
A boiler is a closed vessel in which fluid (generally water) is heated. The fluid does not necessarily boil. The heated or vaporized fluid exits the boiler for use in various processes or heating applications, including water heating, central heating, boiler-based power generation, cooking, and sanitation. Heat sources In a fossil fuel power plant using a steam cycle for power generation, the primary heat source will be combustion of coal, oil, or natural gas. In some cases byproduct fuel such as the carbon monoxide rich offgasses of a coke battery can be burned to heat a boiler; biofuels such as bagasse, where economically available, can also be used. In a nuclear power plant, boilers called steam generators are heated by the heat produced by nuclear fission. Where a large volume of hot gas is available from some process, a heat recovery steam generator or recovery boiler can use the heat to produce steam, with little or no extra fuel consumed; such a configuration is ...
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