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Einheitsempfänger
In August 1939, Nazi Germany introduced the ''Einheits-Fernseh-Empfänger E1'' (i.e. ''Unitary-TV-receiver E1''), also called ''Volksfernseher'' (i.e. ''People's TV''), a 441-line, 25 interlaced frames per second (or more correctly 50 fields per second) television system. The TV was presented to the public in the 16th International radio exhibition Berlin. The project started in 1938, associating the Reichspost and several companies, including Bosch, Blaupunkt, Loewe, Lorenz, TeKaDe and Telefunken. The objective was to produce 10,000 units, but the start of World War II caused only about 50 devices to be installed in military hospitals and various government departments. The Berlin transmitter was destroyed by Allied bombing in November 1943. Like British televisions of the era, the Einheitsempfänger could receive only one channel with its frequency pre-tuned at the factory to reduce construction costs. Only a few surviving and functioning units are known: * Museum for Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
441-line Television System
441-line is the number of scan lines in some early electronic monochrome analog television systems. Systems with this number of lines were used with 25 interlaced frames per second in France from 1937 to 1956, Germany from 1939 to 1943, Italy from 1939 to 1940, as well as by RCA in the United States with 30 interlaced frames per second from 1938 to 1941. Broadcasts were planned in Finland for 1940, but eventually cancelled due to World War II. Some experiments with similar systems were carried out on the USSR in the 1930s and Japan in 1939. Germany After trials with a 375-line system during the Berlin Olympic Games of 1936, by 1937 Germany had introduced a 441-line with 50 interlaced fields per second television system that replaced the previous 180 lines network relayed by a special Reichspost (National Post Office) cable network in the country's main cities (Berlin, Hamburg, Munich, Bayreuth, Nuremberg). The system's line frequency was 11.025 kHz and the broadcas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fernsehsender Paul Nipkow
The Fernsehsender "Paul Nipkow" (''TV Station Paul Nipkow'') in Berlin, Germany, was the first public television station in the world. Carrying programming from Deutscher Fernseh-Rundfunk, it was on the air from 22 March 1935, until it was shut down in 1944. The station was named after Paul Gottlieb Nipkow, the inventor of the Nipkow disk. History Parallel to the experiments by John Logie Baird in the United Kingdom, by Herbert E. Ives and Charles Francis Jenkins in the United States, as well as by Kenjiro Takayanagi in Japan, television pioneers like Dénes Mihály and Manfred von Ardenne had organised experimental television transmissions in Berlin since 1928. In the same year, Telefunken presented a television set prototype during the Internationale Funkausstellung industrial exhibition. From 1929 television test programs were regularly aired from the Funkturm Berlin transmitter (''Rundfunksender Witzleben''). The first public transmission was introduced in the Kroll Opera Ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internationale Funkausstellung Berlin
The IFA ( ) or Internationale Funkausstellung Berlin (International radio exhibition Berlin, a.k.a. 'Berlin Radio Show') is one of the oldest industrial exhibitions in Germany. Between 1924 and 1939 it was an annual event, but from 1950 it was held every other year until 2005. Since then it has become an annual event again, held in September. Today it is one of world's leading trade shows for consumer electronics and home appliances. It offers the opportunity to exhibitors to present their latest products and developments to the general public. As a result of daily reporting in almost all the German media, the radio exhibition and the showcased technology receives a large amount of attention around the globe. In the course of its history, many world innovations were first seen at the exhibition. IFA is "Europe’s biggest tech show". 245,000 visitors and 1,645 exhibitors attended IFA 2015. History German physicist and inventor Manfred von Ardenne gave a public demonstration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Television In Germany
The first regular electronic television service in Germany began in Berlin on March 22, 1935, as Deutscher Fernseh Rundfunk. Broadcasting from the Fernsehsender Paul Nipkow, it used a 180-line system, and was on air for 90 minutes, three times a week. Very few receivers were ever privately owned, and viewers went instead to (television parlors). During the 1936 Summer Olympics, broadcasts, up to eight hours a day, took place in Berlin and Hamburg. The Nazis intended to use television as a medium for their propaganda once the number of television sets was increased, but television was able initially to reach only a small number of viewers, in contrast to radio. Despite many technical improvements to camera technology, allowing for higher resolution imaging, by 1939, and the start of World War II, plans for an expansion of television programming were soon changed in favor of radio. The production of the TV receiver E1, that had just started was cancelled because of the war. Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Telecommunications In Germany
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Television
The concept of television was the work of many individuals in the late 19th and early 20th centuries. The first practical transmissions of moving images over a radio system used mechanical rotating perforated disks to scan a scene into a time-varying signal that could be reconstructed at a receiver back into an approximation of the original image. Development of television was interrupted by the Second World War. After the end of the war, all-electronic methods of scanning and displaying images became standard. Several different standards for addition of color to transmitted images were developed with different regions using technically incompatible signal standards. Television broadcasting expanded rapidly after World War II, becoming an important mass media, mass medium for advertising, propaganda, and entertainment. Television broadcasts can be distributed over the air by VHF and UHF radio signals from terrestrial transmitting stations, by microwave signals from Earth orbi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Television Sets
A television set or television receiver, more commonly called the television, TV, TV set, telly, tele, or tube, is a device that combines a tuner, display, and loudspeakers, for the purpose of viewing and hearing television broadcasts, or using it as a computer monitor. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tube (CRT) technology. The addition of color to broadcast television after 1953 further increased the popularity of television sets in the 1960s, and an outdoor antenna became a common feature of suburban homes. The ubiquitous television set became the display device for the first recorded media in the 1970s, such as , VHS and later DVD. It has been used as a display device since the first generation of (e.g. Timex Sinclair 1000) and dedicated video game consoles (e.g. Atari) in the 1980s. By the early 2010s, flat-panel television incorporating liquid-crystal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hochschule Mittweida
The Hochschule Mittweida (german: Hochschule Mittweida) is a public Fachhochschule, university of applied science located in Mittweida, Germany, founded in 1867. History The University of Applied Sciences Mittweida is the second-largest public university of applied sciences in Saxony. It has had almost 80,000 alumni from almost 40 countries worldwide. Founded in 1867 as “Technicum (German education), Technicum”, the university first served the education of machine-building engineers, and it was one of the largest private schools in Germany at the turn of the century. After the takeover by the Nazism, National Socialists, the “Technicum” lost its status as a private school, and in 1935 became the “Engineering School Mittweida” (Ingenieurschule Mittweida). In the 1960s, due to the success of the electrotechnical training program, the school became the “Engineering College Mittweida”. In 1980, it received the right to award the academic degree of “doctor engineer”. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
German Museum Of Technology
(German Museum of Technology) in Berlin, Germany is a museum of science and technology, and exhibits a large collection of historical technical artifacts. The museum's main emphasis originally was on rail transport, but today it also features exhibits of various sorts of industrial technology. In 2003, it opened both maritime and aviation exhibition halls in a newly built extension. The museum also contains a science center called Spectrum. History The Museum of Traffic and Technology (') was founded in 1982 and assumed the tradition of the Royal Museum of Traffic and Construction (') which was opened in the former station building in 1906. The present-day museum is located on the former freight yard attached to the in the district of Berlin, including two historic roundhouses and several office buildings. Renamed ' in 1996, the exhibition area was gradually expanded. An adjacent new building complex was inaugurated in 2003, topped by a prominent US Air Force Douglas C-47B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Museum Für Kommunikation Frankfurt
The Museum für Kommunikation is a museum of the history of communication in Frankfurt, Germany. It opened on 31 January 1958 under the name ''Bundespostmuseum'' (National Postal Museum) and is the oldest museum on Frankfurt's Museumsufer (Museum Riverbank). The museum was owned by Deutsche Bundespost until 1994. The present building, a modern and transparent glass structure, opened in 1990 and was designed by architect Günter Behnisch. Following the opening of the new building, the museum acquired its present name, and it is now managed by the Museum Trust for Post and Telecommunications, which was established in 1995 during the federal postal reforms that followed re-unification. Exhibition The main exhibition of the museum is located on the underground level. It features a comprehensive history of the development and spread of various methods of communication throughout human history, including mail, telegraph, telephone, radio, television and computer, as well as objects r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency
Frequency is the number of occurrences of a repeating event per unit of time. It is also occasionally referred to as ''temporal frequency'' for clarity, and is distinct from ''angular frequency''. Frequency is measured in hertz (Hz) which is equal to one event per second. The period is the interval of time between events, so the period is the reciprocal of the frequency. For example, if a heart beats at a frequency of 120 times a minute (2 hertz), the period, —the interval at which the beats repeat—is half a second (60 seconds divided by 120 beats). Frequency is an important parameter used in science and engineering to specify the rate of oscillatory and vibratory phenomena, such as mechanical vibrations, audio signals (sound), radio waves, and light. Definitions and units For cyclical phenomena such as oscillations, waves, or for examples of simple harmonic motion, the term ''frequency'' is defined as the number of cycles or vibrations per unit of time. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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