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Retriangulation Of Great Britain
The Retriangulation of Great Britain was a triangulation (surveying), triangulation project carried out between 1935 and 1962 that sought to improve the accuracy of maps of Great Britain. Data gathered from the retriangulation replaced data gathered during the Principal Triangulation of Great Britain, which had been performed between 1783 and 1851. The work was designed to form a complete new Geodetic control network, survey control network for the whole country, and to unify the Map, mapping of the United Kingdom from local County (United Kingdom), county Map projection, projections into a single national Geodetic datum, datum projection and reference system. Its completion led to the establishment of the OSGB36 datum and Ordnance Survey National Grid in use today. History and overview The retriangulation was begun in 1935 by the Director General of the Ordnance Survey, Major-General Malcolm MacLeod (scientist), Malcolm MacLeod. It was directed by the cartographer and mathe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crompton Moor Trig Point (1)
Crompton may refer to Place names *Crompton (West Warwick), a community in West Warwick, Rhode Island, US *Crompton, Greater Manchester, in Shaw and Crompton, Greater Manchester, England formerly in Lancashire *Crompton Urban District, an obsolete local government district that covered Shaw and Crompton until 1974 Institutions and companies *Crompton Corporation, a chemical manufacturer headquartered in Connecticut *Crompton House Church of England School, a secondary school in Shaw and Crompton *Crompton Parkinson, British manufacturer of electrical motors, control gear and lamp bulbs *Crompton Greaves Consumer Electricals, Indian manufacturer *CG Power and Industrial Solutions, Crompton Greaves Power and Industrial Solutions, Indian corporation Technical and engineering terms *British Rail Class 33 or Crompton, a class of diesel-electric locomotive People *Crompton (surname), an English surname See also *Compton (other) {{disambig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Base
An airbase (stylised air base in American English), sometimes referred to as a military airbase, military airfield, military airport, air station, naval air station, air force station, or air force base, is an aerodrome or airport used as a military base by a military force for the operation of military aircraft. Airbase facilities An airbase typically has some facilities similar to a civilian airport; for example, air traffic control and firefighting. Some military aerodromes have passenger facilities; for example, RAF Brize Norton in England has a terminal used by passengers for the Royal Air Force's passenger transport flights. A number of military airbases may also have a civil enclave for commercial passenger flights, e.g. Beijing Nanyuan Airport (China), Chandigarh Airport (India), Ibaraki Airport (Japan), Burlington International Airport (USA), Sheikh Ul-Alam International Airport Srinagar (India), Taipei Songshan Airport (Taiwan), Eindhoven airport (The Netherl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minutes Of Arc
A minute of arc, arcminute (abbreviated as arcmin), arc minute, or minute arc, denoted by the symbol , is a unit of angular measurement equal to of a degree. Since one degree is of a turn, or complete rotation, one arcminute is of a turn. The nautical mile (nmi) was originally defined as the arc length of a minute of latitude on a spherical Earth, so the actual Earth's circumference is very near . A minute of arc is of a radian. A second of arc, arcsecond (abbreviated as arcsec), or arc second, denoted by the symbol , is a unit of angular measurement equal to of a minute of arc, of a degree, of a turn, and (about ) of a radian. These units originated in Babylonian astronomy as sexagesimal (base 60) subdivisions of the degree; they are used in fields that involve very small angles, such as astronomy, optometry, ophthalmology, optics, navigation, land surveying, and marksmanship. To express even smaller angles, standard SI prefixes can be employed; the milliarcsec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Mercator Projection
The transverse Mercator map projection (TM, TMP) is an adaptation of the standard Mercator projection. The transverse version is widely used in national and international mapping systems around the world, including the Universal Transverse Mercator. When paired with a suitable geodetic datum, the transverse Mercator delivers high accuracy in zones less than a few degrees in east-west extent. Standard and transverse aspects The transverse Mercator projection is the transverse aspect of the standard (or ''Normal'') Mercator projection. They share the same underlying mathematical construction and consequently the transverse Mercator inherits many traits from the normal Mercator: * Both projections are cylindrical: for the normal Mercator, the axis of the cylinder coincides with the polar axis and the line of tangency with the equator. For the transverse Mercator, the axis of the cylinder lies in the equatorial plane, and the line of tangency is any chosen meridian, thereby desi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassini Projection
The Cassini projection (also sometimes known as the Cassini–Soldner projection or Soldner projection) is a map projection first described in an approximate form by César-François Cassini de Thury in 1745. Its precise formulas were found through later analysis by Johann Georg von Soldner around 1810. It is the transverse aspect of the equirectangular projection, in that the globe is first rotated so the central meridian becomes the "equator", and then the normal equirectangular projection is applied. Considering the earth as a sphere, the projection is composed of the operations: :x = \arcsin(\cos \varphi \sin \lambda) \qquad y = \arctan\left(\frac\right). where ''λ'' is the longitude from the central meridian and ''φ'' is the latitude. When programming these equations, the inverse tangent function used is actually the atan2 function, with the first argument sin ''φ'' and the second . The reverse operation is composed of the operations: :\varphi = \arcsin(\sin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CTS Tavistock 1
Cts or CTS may refer to: Arts and entertainment Television * Chinese Television System, a Taiwanese broadcast television station, including: ** CTS Main Channel () ** CTS Education and Culture () ** CTS Recreation () ** CTS News and Info () (on Chunghwa Telecom MOD only) * Christian Television System, in South Korea * Crossroads Television System, in Canada * '' The Catherine Tate Show'', a British television program * Channel 44 (Adelaide), in Australia, which uses the call-sign CTS33 * Country Television Services, Australia Businesses * Car Top Systems, a supplier of automotive convertible tops * China Travel Service, the tourism and travel agency of China, parent company renamed China Tourism Group in 2020. * Cognizant Technology Solutions, a US-based information technology services company * Compagnie des Transports Strasbourgeois, a public transport company based in Strasbourg, France * Connexxion Taxi Services, a division of Connexxion, a large public transp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Whernside
Great Whernside is a fell in the Yorkshire Dales, England, not to be confused with Whernside, some to the west. Its summit is the highest point of the eastern flank of Wharfedale above Kettlewell. Great Whernside forms the watershed between Wharfedale and Nidderdale, and is on the boundary between the Yorkshire Dales National Park and Nidderdale Area of Outstanding Natural Beauty. The River Nidd rises on the eastern slopes of Great Whernside, above Angram Reservoir. Name The name ''Whernside'', first recorded in 1214 as ''Querneside'', is of Old English origin. It is derived from ''cweorn'' 'Quern-stone, quern' or 'millstone' and ''sīde'' 'hillside', so means "hillside where millstones are found". The upper part of the hill is composed of millstone grit, and there were once quarries on the Wharfedale side. According to one source the name was originally applied to the hillside on the Wharfedale side, and then extended to the whole hill as seen from Wharfedale. The hill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isle Of Wight
The Isle of Wight (Help:IPA/English, /waɪt/ Help:Pronunciation respelling key, ''WYTE'') is an island off the south coast of England which, together with its surrounding uninhabited islets and Skerry, skerries, is also a ceremonial county. The county is bordered by Hampshire across the Solent strait to the north, and is otherwise surrounded by the English Channel. Its largest settlement is Ryde, and the administrative centre is Newport, Isle of Wight, Newport. Wight has a land area of and had a population of 140,794 in 2022, making it the List of islands of England#Largest islands, largest and List of islands of England#Most populous islands, second-most populous English island. The island is largely rural, with the largest settlements primarily on the coast. These include Ryde in the north-east, Shanklin and Sandown in the south-east, and the large villages of Totland and Freshwater, Isle of Wight, Freshwater in the west. Newport is located inland at the point at which the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dunnose, Isle Of Wight
Dunnose is a cape on the Isle of Wight in the English Channel. The headland is visible from well out to sea, and is used in navigation. It has twice been used as the base point for a triangulation of Great Britain. The line of accurately surveyed points running north from Dunnose to Clifton in Yorkshire provide the basis for triangulation to determine the positions of all other locations in Britain. History German U-boat sank off the coast of Dunnose in December 1917. Location Dunnose Point lies to the east of Ventnor, and can be reached via the A3055. It is said to be haunted by HMS ''Eurydice'', which sank off the point on 24 March 1878 with the loss of 300 people. The bay between Dunnose and St. Catherine's Point to the southeast has a rocky bottom and can be hazardous, since the charts may not show all the submerged rocks. Survey point Around 1800 Dunnose was taken as a base point for a triangulation of Great Britain, in which Captain William Mudge measured a se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southampton
Southampton is a port City status in the United Kingdom, city and unitary authority in Hampshire, England. It is located approximately southwest of London, west of Portsmouth, and southeast of Salisbury. Southampton had a population of 253,651 at the 2011 census, making it one of the most populous cities in southern England. Southampton forms part of the larger South Hampshire conurbation which includes the city of Portsmouth and the boroughs of Borough of Havant, Havant, Borough of Eastleigh, Eastleigh, Borough of Fareham, Fareham and Gosport. A major port, and close to the New Forest, Southampton lies at the northernmost point of Southampton Water, at the confluence of the River Test and River Itchen, Hampshire, Itchen, with the River Hamble joining to the south. Southampton is classified as a Medium-Port City. Southampton was the departure point for the and home to 500 of the people who perished on board. The Supermarine Spitfire, Spitfire was built in the city and Sout ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Conscription
Conscription, also known as the draft in the United States and Israel, is the practice in which the compulsory enlistment in a national service, mainly a military service, is enforced by law. Conscription dates back to antiquity and it continues in some countries to the present day under various names. The modern system of near-universal national conscription for young men dates to the French Revolution in the 1790s, where it became the basis of a very large and powerful military. Most European nations later copied the system in peacetime, so that men at a certain age would serve 1 to 8 years on active duty and then transfer to the reserve force. Conscription is controversial for a range of reasons, including conscientious objection to military engagements on religious or philosophical grounds; political objection, for example to service for a disliked government or unpopular war; sexism, in that historically men have been subject to the draft in the most cases; and ideol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
