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Electromote
The Electromote was the world's first vehicle run like a trolleybus, which was first presented to the public on April 29, 1882, by its inventor Dr. Ernst Werner von Siemens in Halensee, a suburb of Berlin, Germany. In 1847, Siemens told his brother Wilhelm that should he have time and money, he wanted to build himself a carriage with electro-magnetic propulsion. In the early 1880s, he managed to realize the idea, first erecting the masts and infrastructure on site in 1881. Halensee, independent and not yet part of Berlin at the time, had only been named the previous year and was not yet fully developed, providing the project with the space needed as well as access via the Berlin Ringbahn at nearby Halensee station. The Elektromote operated from April 29 to June 13, 1882, on a trail-track along “Straße No. 5”, today's Joachim-Friedrich-Straße, and “Straße No. 13”, today's Johann-Georg-Straße, crossing the upper Kurfürstendamm. According to other sources, the track ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ernst Werner Von Siemens
Ernst Werner Siemens ( von Siemens from 1888; ; ; 13 December 1816 – 6 December 1892) was a German electrical engineer, inventor and industrialist. Siemens's name has been adopted as the SI unit of electrical conductance, the siemens. He founded the electrical and telecommunications conglomerate Siemens. Biography Early years Ernst Werner Siemens was born in Lenthe, today part of Gehrden, near Hannover, in the Kingdom of Hanover in the German Confederation, the fourth child (of fourteen) of a tenant farmer of the Siemens family, an old family of Goslar, documented since 1384. He was a brother of Carl Heinrich von Siemens and Carl Wilhelm Siemens, sons of Christian Ferdinand Siemens (31 July 1787 – 16 January 1840) and wife Eleonore Deichmann (1792 – 8 July 1839). Middle years After finishing school, Siemens intended to study at the Bauakademie Berlin. However, since his family was highly indebted and thus could not afford to pay the tuition fees, he chose to join th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halensee
Halensee () is a ''locality'' (''Ortsteil'') of Berlin in the district (''Bezirk'') of Charlottenburg-Wilmersdorf. Halensee was established as a villa and tenement settlement in about 1880, in the suburb of Wilmersdorf, which became part of Greater Berlin in 1920. In 2004, Halensee became its own ''Ortsteil''. With an area of 1.27 km2 it is the smallest Ortsteil in Berlin after Hansaviertel. History Halensee was the site of the German shooting championship in 1921. On 26 September, one Jannich won the competition firing an Ortgies semi-automatic pistol. Geography The locality, the smallest of the Charlottenburg-Wilmersdorf district, is situated in its centre and borders with Charlottenburg, Wilmersdorf, Schmargendorf, Grunewald and Westend. It is bounded by the Bundesautobahn 100 ''(Stadtring)'' in the west and the ''Cicerostraße'', a branch-off of the Kurfürstendamm in the east. The locality is named after the small , which however is part of the neighbouring Gru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trolleybuses
A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tramin the 1910s and 1920sJoyce, J.; King, J. S.; and Newman, A. G. (1986). ''British Trolleybus Systems'', pp. 9, 12. London: Ian Allan Publishing. .or trolleyDunbar, Charles S. (1967). ''Buses, Trolleys & Trams''. Paul Hamlyn Ltd. (UK). Republished 2004 with or 9780753709702.) is an electric bus that draws power from dual overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires, and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole (or pantograph). They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600-volt direct current, but there are exceptions. Currently, around 300 trolleybus systems are in operation, in cities and towns in 4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overhead Lines
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, trolleybuses or trams. It is known variously as: * Overhead catenary * Overhead contact system (OCS) * Overhead equipment (OHE) * Overhead line equipment (OLE or OHLE) * Overhead lines (OHL) * Overhead wiring (OHW) * Traction wire * Trolley wire This article follows the International Union of Railways in using the generic term ''overhead line''. An overhead line consists of one or more wires (or rails, particularly in tunnels) situated over rail tracks, raised to a high electrical potential by connection to feeder stations at regular intervals. The feeder stations are usually fed from a high-voltage electrical grid. Overview Electric trains that collect their current from overhead lines use a device such as a pantograph, bow collector or trolley pole. It presses against the underside of the lowest overhead wire, the contact wire. Current colle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trolleybus
A trolleybus (also known as trolley bus, trolley coach, trackless trolley, trackless tramin the 1910s and 1920sJoyce, J.; King, J. S.; and Newman, A. G. (1986). ''British Trolleybus Systems'', pp. 9, 12. London: Ian Allan Publishing. .or trolleyDunbar, Charles S. (1967). ''Buses, Trolleys & Trams''. Paul Hamlyn Ltd. (UK). Republished 2004 with or 9780753709702.) is an electric bus that draws power from dual overhead wires (generally suspended from roadside posts) using spring-loaded trolley poles. Two wires, and two trolley poles, are required to complete the electrical circuit. This differs from a tram or streetcar, which normally uses the track as the return path, needing only one wire and one pole (or pantograph). They are also distinct from other kinds of electric buses, which usually rely on batteries. Power is most commonly supplied as 600- volt direct current, but there are exceptions. Currently, around 300 trolleybus systems are in operation, in cities and towns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Trolleybuss Of Siemens In Berlin 1882 (postcard)
First or 1st is the ordinal form of the number one (#1). First or 1st may also refer to: *World record, specifically the first instance of a particular achievement Arts and media Music * 1$T, American rapper, singer-songwriter, DJ, and record producer Albums * ''1st'' (album), a 1983 album by Streets * ''1st'' (Rasmus EP), a 1995 EP by The Rasmus, frequently identified as a single * ''1ST'', a 2021 album by SixTones * ''First'' (Baroness EP), an EP by Baroness * ''First'' (Ferlyn G EP), an EP by Ferlyn G * ''First'' (David Gates album), an album by David Gates * ''First'' (O'Bryan album), an album by O'Bryan * ''First'' (Raymond Lam album), an album by Raymond Lam * ''First'', an album by Denise Ho Songs * "First" (Cold War Kids song), a song by Cold War Kids * "First" (Lindsay Lohan song), a song by Lindsay Lohan * "First", a song by Everglow from ''Last Melody'' * "First", a song by Lauren Daigle * "First", a song by Niki & Gabi * "First", a song by Jonas Brothe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Differential (mechanical Device)
A differential is a gear train with three drive shafts that has the property that the rotational speed of one shaft is the average of the speeds of the others, or a fixed multiple of that average. Functional description The following description of a differential applies to a traditional rear-wheel-drive car or truck with an open or limited slip differential combined with a reduction gearset using bevel gears (these are not strictly necessary; see spur-gear differential): Thus, for example, if the car is making a turn to the right, the main ring gear may make 10 full rotations. During that time, the left wheel will make more rotations because it has farther to travel, and the right wheel will make fewer rotations as it has less distance to travel. The sun gears (which drive the axle half-shafts) will rotate at different speeds relative to the ring gear (one faster, one slower) by, say, 2 full turns each (4 full turns relative to each other), resulting in the left wheel ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1882 In Transport
Year 188 (CLXXXVIII) was a leap year starting on Monday of the Julian calendar. At the time, it was known in the Roman Empire as the Year of the Consulship of Fuscianus and Silanus (or, less frequently, year 941 ''Ab urbe condita''). The denomination 188 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Events By place Roman Empire * Publius Helvius Pertinax becomes pro-consul of Africa from 188 to 189. Japan * Queen Himiko (or Shingi Waō) begins her reign in Japan (until 248). Births * April 4 – Caracalla (or Antoninus), Roman emperor (d. 217) * Lu Ji (or Gongji), Chinese official and politician (d. 219) * Sun Shao, Chinese general of the Eastern Wu state (d. 241) Deaths * March 17 – Julian, pope and patriarch of Alexandria * Fa Zhen (or Gaoqing), Chinese scholar (b. AD 100) * Lucius Antistius Burrus, Roman politician (executed) * Ma Xiang, Chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transport In Berlin
Berlin has developed a highly complex transportation infrastructure providing very diverse modes of urban mobility. 979 bridges cross 197 kilometers of innercity waterways, of roads run through Berlin, of which are motorways. Long-distance rail lines connect Berlin with all of the major cities of Germany and with many cities in neighboring European countries. Regional rail lines provide access to the surrounding regions of Brandenburg and to the Baltic Sea. Road transport In 2013, 1.344 million motor vehicles were registered in the city. With 377 cars per 1000 residents in 2013 (570/1000 in Germany), Berlin as a Western world city has one of the lowest numbers of cars per capita. Congestion pricing has been proposed. Autobahn Berlin is linked to the rest of Germany and neighbouring countries by the country's autobahn network, including the: * A2 to Hannover and the Ruhr area, with links to Frankfurt am Main and western Germany * A9 to Leipzig, Nuremberg and M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
19th Century In Berlin
19 (nineteen) is the natural number following 18 and preceding 20. It is a prime number. Mathematics 19 is the eighth prime number, and forms a sexy prime with 13, a twin prime with 17, and a cousin prime with 23. It is the third full reptend prime, the fifth central trinomial coefficient, and the seventh Mersenne prime exponent. It is also the second Keith number, and more specifically the first Keith prime. * 19 is the maximum number of fourth powers needed to sum up to any natural number, and in the context of Waring's problem, 19 is the fourth value of g(k). * The sum of the squares of the first 19 primes is divisible by 19. *19 is the sixth Heegner number. 67 and 163, respectively the 19th and 38th prime numbers, are the two largest Heegner numbers, of nine total. * 19 is the third centered triangular number as well as the third centered hexagonal number. : The 19th triangular number is 190, equivalently the sum of the first 19 non-zero integers, that is also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gross-Lichterfelde Tramway
The Gross Lichterfelde Tramway was one of the world's first electric tramways ( Miller's line was electrified in 1875). It was built by the Siemens & Halske company in Lichterfelde, a suburb of Berlin, and went in service on 16 May 1881. Overview Werner von Siemens had presented the first electric passenger train at the Berlin industrial exhibition two years before. In order to develop the concept, he received the official approval to run an electric tramway line on already existing tracks, which had been used for building the Prussian military academy (''Hauptkadettenanstalt'') at Lichterfelde West. The line started at Berlin-Lichterfelde Ost station on the Anhalt Railway line. Each car was originally equipped with a 180-volt DC traction motor, the current being supplied via the running rails, in a manner similar to that used by most present-day model railways. Therefore, the tracks were generally separated from roads, and trespassing was prohibited. At level crossi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dynamo
"Dynamo Electric Machine" (end view, partly section, ) A dynamo is an electrical generator that creates direct current using a commutator. Dynamos were the first electrical generators capable of delivering power for industry, and the foundation upon which many other later electric-power conversion devices were based, including the electric motor, the alternating-current alternator, and the rotary converter. Today, the simpler alternator dominates large scale power generation, for efficiency, reliability and cost reasons. A dynamo has the disadvantages of a mechanical commutator. Also, converting alternating to direct current using rectifiers (such as vacuum tubes or more recently via solid state technology) is effective and usually economical. History Induction with permanent magnets The Faraday disk was the first electric generator. The horseshoe-shaped magnet ''(A)'' created a magnetic field through the disk ''(D)''. When the disk was turned, this induced an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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