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Braun (company)
Braun GmbH ( "brown"; ) is a German consumer products company founded in 1921 and based in Kronberg im Taunus. The company is particularly well known for its industrial product design from the mid-20th century which included electric shavers and record players. From 1984 until 2007, Braun was a wholly owned subsidiary of The Gillette Company, which had purchased a controlling interest in the company in 1967. Braun is now a wholly owned subsidiary of Procter & Gamble, which acquired Gillette in 2005. History In 1921, (1890–1951), a mechanical engineer, established a small engineering shop in Frankfurt, Germany. In 1923, he began producing components for radio sets. By 1928, the company had grown to such an extent, partly due to the use of certain plastic materials, that it moved to new premises on ''Idsteiner Strasse''. In 1929, eight years after he started his shop, Max Braun began to manufacture entire radio sets. Soon after, Braun became one of Germany's leading radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kronberg
Kronberg im Taunus is a town in the Hochtaunuskreis district, Hesse, Germany and part of the Frankfurt Rhein-Main urban area. Before 1866, it was in the Duchy of Nassau; in that year the whole Duchy was absorbed into Prussia. Kronberg lies at the foot of the Taunus, flanked in the north and southwest by forests. A mineral water spring also rises in the town. Geography Neighbouring communities Kronberg borders in the north and east on the town of Oberursel, in the southeast on the town of Steinbach, in the south on the towns of Eschborn and Schwalbach (both in Main-Taunus-Kreis), and in the west on the town of Königstein. Constituent communities Kronberg consists of the three centres of Kronberg (8,108 inhabitants), Oberhöchstadt (6,363 inhabitants) and Schönberg (3,761 inhabitants). History 1220–1704 When Kronberg Castle was built (about 1220) it was shared by the Knights of Askenburne (Eschborn), who owned a towered castle there. The ''Kronenstamm'' (''stam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exposition Internationale Des Arts Et Techniques Dans La Vie Moderne
The ''Exposition Internationale des Arts et Techniques dans la Vie Moderne'' (International Exposition of Art and Technology in Modern Life) was held from 25 May to 25 November 1937 in Paris, France. Both the Palais de Chaillot, housing the Musée de l'Homme, and the Palais de Tokyo, which houses the Musée d'Art Moderne de la Ville de Paris, were created for this exhibition that was officially sanctioned by the Bureau International des Expositions. A third building, , housing the permanent Museum of Public Works, which was originally to be among the new museums created on the hill of Chaillot on the occasion of the Exhibition, was not built until January 1937 and inaugurated in March 1939. Exhibitions At first the centerpiece of the exposition was to be a tower (" Phare du Monde") which was to have a spiraling road to a parking garage located at the top and a hotel and restaurant located above that. The idea was abandoned as it was far too expensive. Pavilions Finnish P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shure
Shure Incorporated is an American audio products corporation. It was founded by Sidney N. Shure in Chicago, Illinois, in 1925 as a supplier of radio parts kits. The company became a consumer and professional audio-electronics manufacturer of microphones, wireless microphone systems, phonograph cartridges, discussion systems, mixing console, mixers, and digital signal processing. The company also manufactures listening products, including headphones, high-end earphones, and personal monitor systems. Company history Shure was founded by Sidney N. Shure in 1925 as "The Shure Radio Company", selling radio parts kits several years after completely manufactured radios became commercially available. The company's office was located at 19 South Wells Street in downtown Chicago, Illinois. The following year, Shure published its first direct mail catalog, which was one of only six radio parts catalogs in the United States at the time. By 1928, the company had grown to over 75 employe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerd A
{{Disambiguation ...
Gerd or GERD may refer to: * Gerd (given name), a list of people with the given name or nickname * Gerd (moon), a moon of Saturn * Gerd Island, South Orkney Islands, Antarctica * Gastroesophageal reflux disease, a chronic symptom of mucosal damage caused by stomach acid coming up from the stomach into the esophagus * Grand Ethiopian Renaissance Dam, Benishangul-Gumuz Region, Ethiopia Fictional and mythological figures * Gerðr, sometimes modernly anglicized as ''Gerd'' or Gerth, the wife of the Norse god Freyr * Gerd Frentzen, in the Japanese anime ''Blassreiter'' See also * Gird (other) * Gurd (other) Gurd may refer to: * Gurd, Iran, a village in Gilan Province, Iran * Gyrd and Gnupa, Danish kings * Gurd, a member of the Ginyu Force in the manga Dragon Ball and its anime adaptation Dragon Ball Z See also * Gerd (other) * Gird (disambi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscillation
Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states. Familiar examples of oscillation include a swinging pendulum and alternating current. Oscillations can be used in physics to approximate complex interactions, such as those between atoms. Oscillations occur not only in mechanical systems but also in dynamic systems in virtually every area of science: for example the beating of the human heart (for circulation), business cycles in economics, predator–prey population cycles in ecology, geothermal geysers in geology, vibration of strings in guitar and other string instruments, periodic firing of nerve cells in the brain, and the periodic swelling of Cepheid variable stars in astronomy. The term ''vibration'' is precisely used to describe a mechanical oscillation. Oscillation, especially rapid oscillation, may be an undesirable phenomenon in proc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Razor
A razor is a bladed tool primarily used in the removal of body hair through the act of shaving. Kinds of razors include straight razors, safety razors, disposable razors, and electric razors. While the razor has been in existence since before the Bronze Age (the oldest razor-like object has been dated to 18,000 BC), the most common types of razors currently used are the safety razor and the electric razor. History Razors have been identified from many Bronze Age cultures. These were made of bronze or obsidian and were generally oval-shaped, with a small tang protruding from one of the short ends.Warwickshire County Council: New Prehistoric Archaeology Objects "Even further away in time ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round-tray Slide Projector
A carousel slide projector is a slide projector that uses a rotary tray to store slides, used to project slide photographs and to create slideshows. It was first patented on May 11, 1965, by David E. Hansen of Fairport, New York. Hansen was an industrial designer at the Eastman Kodak Company. A patent for the rotary tray was granted in 1966 after a 1962 application by the Eastman Kodak Company. The original concept for the carousel slide projector is credited to Italian-American Louis Misuraca, who brought his design to the Kodak company, and sold it for a lump sum. Kodak released their first Carousel projector, the Model 550, in 1961 and sold it until 1966. The 1963 Carousel Model S (Carousel-S), a professional model sold only in Germany, was designed by Hans Gugelot and Reinhold Häcker for Kodak AG in Stuttgart and is in the permanent collection of the Museum of Modern Art. Physical form A separate, circular tray holds several (usually 80 or 140) 35mm slides, and is filled wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slide Projector
A slide projector is an opto-mechanical device for showing photographic slides. 35 mm slide projectors, direct descendants of the larger-format magic lantern, first came into widespread use during the 1950s as a form of occasional home entertainment; family members and friends would gather to view slide shows. Reversal film was much in use, and supplied slides snapped during vacations and at family events. Slide projectors were also widely used in educational and other institutional settings. Photographic film slides and projectors have mostly been replaced by image files on digital storage media shown on a projection screen by using a video projector or simply displayed on a large-screen video monitor. History A continuous-slide lantern was patented in 1881. It included a dissolving views apparatus.Sloane, T. O'Conor. ''Facts Worth Knowing Selected Mainly from the Scientific American for Household, Workshop, and Farm Embracing Practical and Useful Information fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrostatic Loudspeaker
An electrostatic loudspeaker (ESL) is a loudspeaker design in which sound is generated by the force exerted on a membrane suspended in an electrostatic field. Design and functionality The speakers use a thin flat diaphragm usually consisting of a plastic sheet coated with a conductive material such as graphite sandwiched between two electrically conductive grids, with a small air gap between the diaphragm and grids. For low distortion operation, the diaphragm must operate with a constant charge on its surface, rather than with a constant voltage. This is accomplished by either or both of two techniques: the diaphragm's conductive coating is chosen and applied in a manner to give it a very high surface resistivity, and/or a large value resistor is placed in series between the EHT (Extra High Tension or Voltage) power supply and the diaphragm (resistor not shown in the diagram here). However, the latter technique will still allow distortion as the charge will migrate across the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quad Electroacoustics
Quad Electroacoustics is a Chinese manufacturer of hi-fi equipment, based in Shenzhen, China. Corporate history The company was founded by Peter J. Walker in 1936 in London, and was initially called ''S.P. Fidelity Sound Systems''. In 1936 the name was changed to the ''Acoustical Manufacturing Co. Ltd''. The company moved from London to Huntingdon in 1941 after being bombed out of London in World War II. The company initially produced only public address equipment but after the war they began to produce equipment designed for use in the home as a result of the rising demand for high quality domestic sound reproduction. Within a few years the company had transitioned almost entirely to manufacturing models for the home audio market. Peter Walker was quoted in December 1975 in ‘Wireless World’ magazine, "An audio power amplifier is required to produce an output signal that differs from the input signal in magnitude only. It must therefore have occurred to every circuit d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
