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Radio Stations In German South West Africa
A series of radio stations in German South West Africa (today Namibia) enabled the Germans to communicate between their colony, German South West Africa, and their motherland, the German Empire. They also used radio to communicate within the German South West Africa territory and with German boats at sea. The stations utilized spark-gap transmitters. The introduction of wireless telegraphy was a significant step for communication between German South West Africa and the German motherland in Europe. The news about the start of World War I reached German South West Africa on 2 August 1914 via radio telegraphy. The information was transmitted from the Nauen transmitter station via a relay station in Kamina and Lomé in Togo to the radio station in Windhoek. Fixed radio stations The Germans installed three fixed radio stations: one in the capital Windhoek, one in Swakopmund and one in Lüderitzbucht (now Lüderitz). During World War I, the radio station in Swakopmund was moved to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Luther University Of Halle-Wittenberg
Martin Luther University of Halle-Wittenberg (german: Martin-Luther-Universität Halle-Wittenberg), also referred to as MLU, is a public, research-oriented university in the cities of Halle and Wittenberg and the largest and oldest university in the German state of Saxony-Anhalt. MLU offers German and international (English) courses leading to academic degrees such as BA, BSc, MA, MSc, doctoral degrees, and Habilitation. The university was created in 1817 through the merger of the University of Wittenberg (founded in 1502) and the University of Halle (founded in 1694). MLU is named after Protestant reformer Martin Luther, who was a professor in Wittenberg. Today, the university campus is located in Halle, while ''Leucorea Foundation'' in Wittenberg serves as MLU's convention centre. Both Halle and Wittenberg are about one hour from Berlin via the Berlin–Halle railway, which offers Intercity-Express (ICE) trains. History University of Wittenberg (''Universität Witten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Stations Established In 1912
Radio is the technology of signaling and communicating using radio waves. Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). They are generated by an electronic device called a transmitter connected to an antenna which radiates the waves, and received by another antenna connected to a radio receiver. Radio is very widely used in modern technology, in radio communication, radar, radio navigation, remote control, remote sensing, and other applications. In radio communication, used in radio and television broadcasting, cell phones, two-way radios, wireless networking, and satellite communication, among numerous other uses, radio waves are used to carry information across space from a transmitter to a receiver, by modulating the radio signal (impressing an information signal on the radio wave by varying some aspect of the wave) in the transmitter. In radar, used to locate and track objects like aircraft, ships, spacecraft and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitterfeld
Bitterfeld () is a town in the district of Anhalt-Bitterfeld, Saxony-Anhalt, Germany. Since 1 July 2007 it has been part of the town of Bitterfeld-Wolfen. It is situated approximately 25 km south of Dessau, and 30 km northeast of Halle (Saale). At the end of 2016, it had 40,964 inhabitants. History and description The name Bitterfeld most likely comes from the Middle High German words ''bitter'' and ''Feld'' and so means "boggy land". Bitterfeld was built by a colony of Flemish immigrants in 1153. The first documentary mention is from 1224. It was captured by the landgrave of Meissen in 1476, and belonged thenceforth to Saxony, until it was ceded to Prussia in 1815. By 1900, Bitterfeld station was an important junction of the Berlin–Halle and the Magdeburg–Leipzig railways. The population at that time was 11,839; it manufactured drainpipes, paper roofing, and machinery, and had sawmills. There were also several coal mines in the vicinity. Owing to its pleasant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gas Balloon
A gas balloon is a balloon that rises and floats in the air because it is filled with a gas lighter than air (such as helium or hydrogen). When not in flight, it is tethered to prevent it from flying away and is sealed at the bottom to prevent the escape of gas. A gas balloon may also be called a '' Charlière'' for its inventor, the Frenchman Jacques Charles. Today, familiar gas balloons include large blimps and small latex party balloons. For nearly 200 years, well into the 20th century, manned balloon flight utilized gas balloons before hot-air balloons became dominant. Without power, heat or fuel, untethered flights of gas balloons depended on the skill of the pilot. Gas balloons have greater lift for a given volume, so they do not need to be so large, and they can stay up for much longer than hot air balloons. History The first gas balloon made its flight in August 1783. Designed by professor Jacques Charles and Les Frères Robert, it carried no passengers or cargo. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ox-wagon
An ox-wagon or bullock wagon is a four-wheeled vehicle pulled by oxen (draught cattle). It was a traditional form of transport, especially in Southern Africa but also in New Zealand and Australia. Ox-wagons were also used in the United States. The first recorded use of an ox-wagon was around 1670, but they continue to be used in some areas up to modern times. Design Ox-wagons are typically drawn by teams of oxen, harnessed in pairs. This gave them a very wide turning circle, the legacy of which are the broad, pleasant boulevards of cities such as Bulawayo, Zimbabwe, which are wide, and Grahamstown, South Africa, which are "wide enough to turn an ox-wagon". The wagon itself is made of various kinds of wood, with the rims of the wheels being covered with tyres of iron, and since the middle of the 19th century the axles have also been made of iron. The back wheels are usually substantially larger than the front ones and rigidly connected to the tray of the vehicle. The front whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telefunken
Telefunken was a German radio and television apparatus company, founded in Berlin in 1903, as a joint venture of Siemens & Halske and the ''Allgemeine Elektrizitäts-Gesellschaft'' (AEG) ('General electricity company'). The name "Telefunken" appears in: * the product brand name "Telefunken"; * ''Gesellschaft für drahtlose Telegraphie m.b.H., System Telefunken'', founded 1903 in Berlin as a subsidiary of AEG and Siemens & Halske; * ''Telefunken, Gesellschaft für drahtlose Telegraphie m.b.H.'' (from 1923 to 1955 – since 1941 subsidiary of the AEG only); * ''Telefunken GmbH'' in 1955; * ''Telefunken Aktiengesellschaft (AG)'' in 1963; * Merger of AEG and Telefunken to form ''Allgemeine Elektrizitäts-Gesellschaft AEG-Telefunken'' (from 1967 to 1979); * AEG-TELEFUNKEN AG (from 1979 to 1985); * ''TELEFUNKEN Fernseh und Rundfunk GmbH'', Hanover (1972, subsidiary of AEG-TELEFUNKEN); * Telefunken electronic GmbH (a spin-off of AEG-Telefunken and DASA * the company (since 1992 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siemens & Halske
Siemens & Halske AG (or Siemens-Halske) was a German electrical engineering company that later became part of Siemens. It was founded on 12 October 1847 as ''Telegraphen-Bauanstalt von Siemens & Halske'' by Werner von Siemens and Johann Georg Halske. The company, located in Berlin-Kreuzberg, specialised in manufacturing electrical telegraphs according to Charles Wheatstone's patent of 1837. In 1848, the company constructed one of the first European telegraph lines from Berlin to Frankfurt am Main. Siemens & Halske was not alone in the realm of electrical engineering. In 1887, Emil Rathenau had established ''Allgemeine Elektrizitäts-Gesellschaft'' (AEG), which became a long-time rival. In 1881, Siemens & Halske built the Gross-Lichterfelde Tramway, the world's first electric streetcar line, in the southwestern Lichterfelde suburb of Berlin, followed by the Mödling and Hinterbrühl Tram near Vienna, the first electrical interurban tram in Austria-Hungary. 1882 saw the open ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Union Defence Force (South Africa)
) , headquarters = Pretoria, Transvaal, South Africa , commander-in-chief = , commander-in-chief_title = Sovereign of South Africa , minister = , minister_title = , commander = , commander_title = Chief of the UDF , age = , conscription = , active = , ranked = , reserve = , deployed = , amount = , percent_GDP = , domestic_suppliers = , foreign_suppliers = , imports = , exports = , history = World War I Rand RebellionWorld War II Berlin BlockadeKorean War , ranks = South African military ranks The Union Defence Force (UDF) ( af, Unie-Verdedigingsmag) comprised the armed forces of South Africa from 1 July 1912, when the Defence Act (No 13 of 1912) took effect, two years after the creation of the Union of South Africa, until 1957 when it was reorganised and renamed the South African Defence ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Foreign, Commonwealth And Development Office
The Foreign, Commonwealth & Development Office (FCDO) is a department of the Government of the United Kingdom. Equivalent to other countries' ministries of foreign affairs, it was created on 2 September 2020 through the merger of the Foreign & Commonwealth Office (FCO) and the Department for International Development (DFID). The FCO, itself created in 1968 by the merger of the Foreign Office (FO) and the Commonwealth Office, was responsible for protecting and promoting British interests worldwide. The head of the FCDO is the Secretary of State for Foreign, Commonwealth and Development Affairs, commonly abbreviated to "Foreign Secretary". This is regarded as one of the four most prestigious positions in the Cabinet – the Great Offices of State – alongside those of Prime Minister, Chancellor of the Exchequer and Home Secretary. James Cleverly was appointed Foreign Secretary on 6 September 2022. The FCDO is managed day-to-day by a civil servant, the permanent under-secret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
T-antenna
A T-antenna, T-aerial, flat-top antenna, or (capacitively) top-loaded antenna is a monopole radio antenna with transverse capacitive loading wires attached to its top. T-antennas are typically used in the VLF, LF, MF, and shortwave bands, and are widely used as transmitting antennas for amateur radio stations, and long wave and medium wave AM broadcasting stations. They can also be used as receiving antennas for shortwave listening. The antenna consists of one or more horizontal wires suspended between two supporting radio masts or buildings and insulated from them at the ends. A vertical wire is connected to the center of the horizontal wires and hangs down close to the ground, connected to the transmitter or receiver. Combined, the two sections form a ‘T’ shape, hence the name. The transmitter power is applied, or the receiver is connected, between the bottom of the vertical wire and a ground connection. The T-antenna functions as a monopole antenna with capaciti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortwave Radio
Shortwave radio is radio transmission using shortwave (SW) radio frequencies. There is no official definition of the band, but the range always includes all of the high frequency band (HF), which extends from 3 to 30 MHz (100 to 10 metres); above the medium frequency band (MF), to the bottom of the VHF band. Radio waves in the shortwave band can be reflected or refracted from a layer of electrically charged atoms in the atmosphere called the ionosphere. Therefore, short waves directed at an angle into the sky can be reflected back to Earth at great distances, beyond the horizon. This is called skywave or "skip" propagation. Thus shortwave radio can be used for communication over very long distances, in contrast to radio waves of higher frequency, which travel in straight lines ( line-of-sight propagation) and are limited by the visual horizon, about 64 km (40 miles). Shortwave broadcasts of radio programs played an important role in the early days of rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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