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155 (number)
155 (one hundred ndfifty-five) is the natural number following 154 and preceding 156. In mathematics 155 is: *a composite number *a semiprime. *a deficient number, since 1+ 5+ 31= 37<155. * odious, since its binary expansion has a total of 5 ones in it. There are 155 primitive permutation groups of degree 81. If one adds up all the primes from the least through the greatest prime factors of 155, that is, 5 and 31, the result is 155. Only three other "small" semiprimes (10, 39, and 371) share this attribute. In the military * was a |
Natural Number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country"). Numbers used for counting are called ''Cardinal number, cardinal numbers'', and numbers used for ordering are called ''Ordinal number, ordinal numbers''. Natural numbers are sometimes used as labels, known as ''nominal numbers'', having none of the properties of numbers in a mathematical sense (e.g. sports Number (sports), jersey numbers). Some definitions, including the standard ISO/IEC 80000, ISO 80000-2, begin the natural numbers with , corresponding to the non-negative integers , whereas others start with , corresponding to the positive integers Texts that exclude zero from the natural numbers sometimes refer to the natural numbers together with zero as the whole numbers, while in other writings, that term is used instead for the integers (including negative integers). The natural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snooker
Snooker (pronounced , ) is a cue sports, cue sport played on a Billiard table#Snooker and English billiards tables, rectangular table covered with a green cloth called baize, with six Billiard table#Pockets 2, pockets, one at each corner and one in the middle of each long side. First played by British Army officers stationed in India in the second half of the 19th century, the game is played with twenty-two balls, comprising a , fifteen red balls, and six other balls—a yellow, green, brown, blue, pink, and black—collectively called the colours. Using a cue stick, the individual players or teams take turns to strike the white to other balls in a predefined sequence, accumulating points for each successful pot and for each time the opposing player or team commits a . An individual of snooker is won by the player who has scored the most points. A snooker ends when a player reaches a predetermined number of frames. Snooker gained its identity in 1875 when army officer Nevil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
155th Street (IRT Ninth Avenue Line)
The 155th Street station was an elevated railway station in Manhattan, New York City, that operated from 1870 until 1958. It served as the north terminal of the IRT Ninth Avenue Line from its opening until 1918 and then as the southern terminal of a surviving stub portion from 1940 until its closure in 1958. It had two tracks and one island platform. History When the Ninth Avenue El was extended to Harlem in 1879 it terminated at 155th Street as a matter of geographic necessity (the hills of Washington Heights and Highbridge would have made an northward expansion difficult) and demand (northern Manhattan and the Bronx were still sparsely populated). Development came to the area with the New York City and Northern Railroad (later known as the Putnam Division) building its terminal at 155th Street in 1881 and the Polo Grounds relocating to a site just west of the station in 1889. The line expanded into The Bronx on June 1, 1918, when the Putnam Bridge, which had been bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
155th Street (IND Eighth Avenue Line)
The 155th Street station is a local station on the IND Eighth Avenue Line of the New York City Subway. Located under the intersection of 155th Street and St. Nicholas Avenue, at the border of the Harlem and Washington Heights neighborhoods of Manhattan, it is served by the C train at all times except nights, when the A train takes over service. History The station opened on September 10, 1932, as part of the city-operated Independent Subway System (IND)'s initial segment, the Eighth Avenue Line between Chambers Street and 207th Street. Construction of the whole line cost $191.2 million (equivalent to $ million in . While the IRT Broadway–Seventh Avenue Line already provided parallel service, the new Eighth Avenue subway via Central Park West and Frederick Douglass Boulevard provided an alternative route. Station layout This underground station has two local tracks with two side platforms. Two express tracks, used by the A train during daytime hours, run below the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
155th Street (IND Concourse Line)
The 155th Street station (155th Street–Eighth Avenue on some signage) is a local station on the IND Concourse Line of the New York City Subway. It is located at the intersection of the bi-level 155th Street's lower level and Frederick Douglass Boulevard, at the border of Harlem and the Coogan's Bluff section of Washington Heights neighborhoods of Manhattan. It is served by the D train at all times except rush hours in the peak direction and the B during rush hours only. The station opened in 1933, along with the rest of the Concourse Line. History This station was built as part of the IND Concourse Line, which was one of the original lines of the city-owned Independent Subway System (IND). The route of the Concourse Line was approved to Bedford Park Boulevard on June 12, 1925 by the New York City Board of Transportation. Construction of the line began in July 1928. The station opened on July 1, 1933, along with the rest of the Concourse subway. Station layout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
155th Street (Manhattan)
155th Street is a crosstown street separating the Harlem and Washington Heights neighborhoods, in the New York City borough of Manhattan. It is the northernmost of the 155 crosstown streets mapped out in the Commissioner's Plan of 1811 that established the numbered street grid in Manhattan. The street consists of a "high portion" which is a major artery through the area, as well as a lesser-used "low portion". The "high" portion of 155th Street starts on the West Side at Riverside Drive, crossing Broadway, Amsterdam Avenue, and St. Nicholas Avenue. At St. Nicholas Place, the terrain drops off steeply, forming Coogan's Bluff. 155th Street is carried on the long 155th Street Viaduct, a City Landmark constructed in 1893, that slopes down towards the Harlem River, continuing onto the Macombs Dam Bridge, crossing over (but not intersecting with) the Harlem River Drive. A separate, unconnected section of 155th Street runs under the viaduct, connecting Bradhurst Avenue and the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airliner
An airliner is a type of aircraft for transporting passengers and air cargo. Such aircraft are most often operated by airlines. Although the definition of an airliner can vary from country to country, an airliner is typically defined as an airplane intended for carrying multiple passengers or cargo in commercial service. The largest of them are wide-body jets which are also called twin-aisle because they generally have two separate aisles running from the front to the back of the passenger cabin. These are usually used for long-haul flights between airline hubs and major cities. A smaller, more common class of airliners is the narrow-body or single-aisle. These are generally used for short to medium-distance flights with fewer passengers than their wide-body counterparts. Regional airliners typically seat fewer than 100 passengers and may be powered by turbofans or turboprops. These airliners are the non- mainline counterparts to the larger aircraft operated by the major car ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blériot 155
The Blériot 155 (or Bl-155) was a French airliner of the 1920s. It was a four-engined biplane developed from the Blériot 115 and 135, but larger than these aircraft. Two were built for use by Air Union on their Paris-London route. Both were lost in accidents in 1926. Records In 1926, Robert Bajac piloted one of the 155s to break the world absolute aerial duration records for powered aircraft. On 26 March, he stayed aloft 3 hours 46 minutes 35 seconds with a 1,500 kg payload aboard, thereby not only breaking the record for this weight payload, but also the record for 1,000 kg payload. On 24 July, he broke the equivalent record in the 2,000 kg payload class. Accidents On 18 August 1926, Blériot 155 F-AIEB '' Wilbur Wright'' crashed due to engine failure in bad weather at Hurst, Kent, near Lympne Airport. One crewmember and two of the thirteen passengers aboard were killed. On 2 October 1926, Blériot 155 F-AICQ ''Clement Ader'' of Air Union crashed at Leigh, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Train
In rail transport, a train (from Old French , from Latin , "to pull, to draw") is a series of connected vehicles that run along a railway track and Passenger train, transport people or Rail freight transport, freight. Trains are typically pulled or pushed by locomotives (often known simply as "engines"), though some are self-propelled, such as multiple units. Passengers and cargo are carried in railroad cars, also known as wagons. Trains are designed to a certain Track gauge, gauge, or distance between rails. Most trains operate on steel tracks with steel wheels, the low friction of which makes them more efficient than other forms of transport. Trains have their roots in wagonways, which used railway tracks and were Horsecar, powered by horses or Cable railway, pulled by cables. Following the invention of the steam locomotive in the United Kingdom in 1804, trains rapidly spread around the world, allowing freight and passengers to move over land faster and cheaper than ever pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Kingdom
The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Europe, off the north-western coast of the continental mainland. It comprises England, Scotland, Wales and Northern Ireland. The United Kingdom includes the island of Great Britain, the north-eastern part of the island of Ireland, and many smaller islands within the British Isles. Northern Ireland shares a land border with the Republic of Ireland; otherwise, the United Kingdom is surrounded by the Atlantic Ocean, the North Sea, the English Channel, the Celtic Sea and the Irish Sea. The total area of the United Kingdom is , with an estimated 2020 population of more than 67 million people. The United Kingdom has evolved from a series of annexations, unions and separations of constituent countries over several hundred years. The Treaty of Union between the Kingdom of England (which included Wales, annexed in 1542) and the Kingdom of Scotland in 170 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diesel Multiple Unit
A diesel multiple unit or DMU is a multiple-unit train powered by on-board diesel engines. A DMU requires no separate locomotive, as the engines are incorporated into one or more of the carriages. Diesel-powered single-unit railcars are also generally classed as DMUs. Diesel-powered units may be further classified by their transmission type: diesel–mechanical DMMU, diesel–hydraulic DHMU, or diesel–electric DEMU. Design The diesel engine may be located above the frame in an engine bay or under the floor. Driving controls can be at both ends, on one end, or in a separate car. Types by transmission DMUs are usually classified by the method of transmitting motive power to their wheels. Diesel–mechanical In a diesel–mechanical multiple unit (DMMU), the rotating energy of the engine is transmitted via a gearbox and driveshaft directly to the wheels of the train, like a car. The transmissions can be shifted manually by the driver, as in the great majority of first-gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Rail Class 155
The British Rail Class 155 is a diesel multiple unit passenger train. These DMUs were built by Leyland Bus at Workington (incorporating some Leyland National bus components) between 1987 and 1988 as part of BR's replacement of its ageing first-generation diesel fleet. 42 units were originally built, of which only 7 remain; the other 35 units were converted to railcars. Background By the beginning of the 1980s, British Rail (BR) operated a large fleet of first generation DMUs, which had been constructed in prior decades to various designs. While formulating its long-term strategy for this sector of its operations, British Rail planners recognised that there would be considerable costs incurred by undertaking refurbishment programmes necessary for the continued use of these aging multiple units, particularly due to the necessity of handling and removing hazardous materials such as asbestos. In light of the high costs involved in retention, planners examined the prospects for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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