|
Christopher Cockerell
Sir Christopher Sydney Cockerell CBE RDI FRS (4 June 1910 – 1 June 1999) was an English engineer, best known as the inventor of the hovercraft. Early life and education Cockerell was born in Cambridge, where his father, Sir Sydney Cockerell, was curator of the Fitzwilliam Museum, having previously been the secretary of William Morris. His mother was the illustrator and designer Florence Kingsford Cockerell. Christopher attended the preparatory school of St Faith's. Christopher was educated at Gresham's School, Holt, Norfolk. He matriculated at Peterhouse, Cambridge to read mechanical engineering. He later returned to Cambridge to study radio and electronics. Early career He began his career working for W. H. Allen & Sons of Bedford. After returning to the University of Cambridge in 1934 to study radio and electronics, he went to work at the Radio Research Company. In 1935, he went to work at the Marconi Company, and soon afterwards he married Margaret Elinor Belsham (4 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hythe, Hampshire
Hythe () is a town near Southampton, Hampshire, England. It is located by the shore of Southampton Water, and has a ferry service connecting it to Southampton. Hythe has a small shopping area, a pier, and a marina for yachts. History The name Hythe means landing-place or haven. Hythe is recorded in a Parliamentary roll from 1293.squadron. Hythe was a village up to the 1950s, but the expansion of Fawley Refinery led to a demand for more houses for workers, and Hythe and Dibden Purlieu were allowed to expand into a small town. In 1983, following the growth of Hythe, the parish of Dibden was renamed to Hythe and Dibden, to reflect the importance of Hythe as a new focal point of the Parish.What is the Parish Council , Hythe and Dibden Parish Council Geography Hythe has a small shopp ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gresham's School
Gresham's School is a Public school (United Kingdom), public school (English Independent school (United Kingdom), independent Day school, day and boarding school) in Holt, Norfolk, Holt, Norfolk, England, one of the top thirty International Baccalaureate schools in England. The school was founded in 1555 by John Gresham, Sir John Gresham as a free grammar school for forty boys, following Henry VIII of England, King Henry VIII's Dissolution of the Monasteries, dissolution of Priory of St Mary in the Meadow, Beeston Regis, Beeston Priory. The founder left the school's endowments in the hands of the Worshipful Company of Fishmongers of the City of London, who are still the school's trustees. In the 1890s, an increase in the rental income of property in the City of London led to a major expansion of the school, which built many new buildings on land it owned on the eastern edge of Holt, including several new Boarding school, boarding house system, houses as well as new teaching bui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypothesis
A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used interchangeably, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research in a process beginning with an educated guess or thought. A different meaning of the term ''hypothesis'' is used in formal logic, to denote the antecedent of a proposition; thus in the proposition "If ''P'', then ''Q''", ''P'' denotes the hypothesis (or antecedent); ''Q'' can be called a consequent. ''P'' is the assumption in a (possibly counterfactual) ''What If'' question. The adjective ''hypothetical'', meaning "hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Momentum Curtain
Discovered by British engineer Christopher Cockerell, the momentum curtain is a unique and efficient way to reduce friction between a vehicle and its surface of travel, be it water or land, by levitating the vehicle above this surface via a cushion of air. It is this principle of levitation upon which a hovercraft is based, and Christopher Cockerell set about applying his momentum curtain theory to hovercraft to increase their abilities in overcoming friction in travel. Levitating a vehicle above the ground/water to reduce its drag was not a new concept. John Thornycroft, in 1877, discovered that trapping air beneath a ship's hull, or pumping air beneath it with bellows, decreased the effects of friction upon the hull thereby increasing the ship's top attainable speeds.Discovery Channel: Ultimate Hovercraft However, technology at the time was insufficient for Thornycroft's ideas to be developed further. Cockerell used the idea of pumped air under a hull (this then becoming a ple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John I
John I may refer to: People * John I (bishop of Jerusalem) * John Chrysostom (349 – c. 407), Patriarch of Constantinople * John of Antioch (died 441) * Pope John I, Pope from 523 to 526 * John I (exarch) (died 615), Exarch of Ravenna * John I of Naples (died c. 719) * John of Abkhazia (ruled 878/879–880) * John I of Gaeta (died c. 933) * John I Tzimiskes (c. 925 – 976), Byzantine Emperor * John I of Amalfi (died 1007) * John I of Ponthieu (c. 1147 – 1191) * John I (archbishop of Trier) (c. 1140-1212), Archbishop of Trier from 1190 to 1212 * John of England (1166–1216), King of England, Lord of Ireland, Duke of Normandy and Aquitaine and Count of Anjou * John I of Sweden (c. 1201 – 1222) * John of Brienne (c. 1148 – 1237), king of Jerusalem * John I of Trebizond (died 1238) * John I of Dreux (1215–1249) * John I of Avesnes (1218–1257), Count of Hainaut * John of Brunswick, Duke of Lüneburg (c. 1242–1277) * John I, Count of Blois (died 1280) * John I, Duke of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexandra Palace
Alexandra Palace is a Grade II listed entertainment and sports venue in London, situated between Wood Green and Muswell Hill in the London Borough of Haringey. It is built on the site of Tottenham Wood and the later Tottenham Wood Farm. Originally built by John Johnson and Alfred Meeson, it opened in 1873 but following a fire two weeks after its opening, was rebuilt by Johnson. Intended as "The People's Palace" and often referred to as "Ally Pally", its purpose was to serve as a public centre of recreation, education and entertainment; North London's counterpart to the Crystal Palace in South London. At first a private venture, in 1900, the owners planned to sell it and Alexandra Park for development. A group of neighbouring local authorities managed to acquire it. An Act of Parliament created the Alexandra Palace and Park Trust. The Act required the trustees to maintain the building and park and make them available for the free use and recreation of the public forever. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Location
Radiolocation, also known as radiolocating or radiopositioning, is the process of finding the location of something through the use of radio waves. It generally refers to passive uses, particularly radar—as well as detecting buried cables, water mains, and other public utilities. It is similar to radionavigation, but radiolocation usually refers to passively finding a distant object rather than actively one's own position. Both are types of radiodetermination. Radiolocation is also used in real-time locating systems (RTLS) for tracking valuable assets. Basic principles An object can be located by measuring the characteristics of received radio waves. The radio waves may be transmitted by the object to be located, or they may be backscattered waves (as in radar or passive RFID). A stud finder uses radiolocation when it uses radio waves rather than ultrasound. One technique measures a distance by using the difference in the power of the received signal strength (RSSI) as co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford Dictionary Of National Biography
The ''Dictionary of National Biography'' (''DNB'') is a standard work of reference on notable figures from British history, published since 1885. The updated ''Oxford Dictionary of National Biography'' (''ODNB'') was published on 23 September 2004 in 60 volumes and online, with 50,113 biographical articles covering 54,922 lives. First series Hoping to emulate national biographical collections published elsewhere in Europe, such as the '' Allgemeine Deutsche Biographie'' (1875), in 1882 the publisher George Smith (1824–1901), of Smith, Elder & Co., planned a universal dictionary that would include biographical entries on individuals from world history. He approached Leslie Stephen, then editor of the ''Cornhill Magazine'', owned by Smith, to become the editor. Stephen persuaded Smith that the work should focus only on subjects from the United Kingdom and its present and former colonies. An early working title was the ''Biographia Britannica'', the name of an earlier eightee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Writtle
The village and civil parish of Writtle lies west of Chelmsford, Essex, England. It has a traditional village green complete with duck pond and a Norman church, and was once described as "one of the loveliest villages in England, with a ravishing variety of ancient cottages". The village is now home to Writtle College, one of the UK's oldest and largest land-based colleges and a partner institution of the University of Essex, the grounds of which once housed a Royal hunting lodge, later the possession of the De Brus and De Bohun families. The suggestion that Writtle is the birthplace of Robert the Bruce, as well as his father Robert de Brus, 6th Lord of Annandale, is contested, though its possession and use by both is incontrovertible. From 1996 until 2017 Writtle hosted the annual southern V Festival within the grounds of Sir John Comyn's Hylands Park. At the 2001 census, it had a population of 5,632, decreasing to 5,383 at the 2011 Census. History The Romans were present ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chelmsford
Chelmsford () is a city in the City of Chelmsford district in the county of Essex, England. It is the county town of Essex and one of three cities in the county, along with Southend-on-Sea and Colchester. It is located north-east of London at Charing Cross and south-west of Colchester. The population of the urban area was 111,511 in the 2011 Census, while the wider district has 168,310. The demonym for a Chelmsford resident is "Chelmsfordian". The main conurbation of Chelmsford incorporates all or part of the former parishes of Broomfield, Newland Spring, Great Leighs, The Walthams, Great Baddow, Little Baddow, Galleywood, Howe Green, Margaretting, Pleshey, Stock, Roxwell, Danbury, Bicknacre, Writtle, Moulsham, Rettendon, The Hanningfields, The Chignals, Widford and Springfield, including Springfield Barnes, now known as Chelmer Village. The communities of Chelmsford, Massachusetts, Chelmsford, Ontario and Chelmsford, New Brunswick are named after the city. Chelmsf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Danbury, Essex
Danbury is a village in the City of Chelmsford district, in the county of Essex, England. It is located northeast of Charing Cross, London and has a population of 6,500. It is situated on a hill above sea level. The city of Danbury, Connecticut in the United States is named after the village. Origins The village was built on the site of a Neolithic or early Iron Age hill fort noted for its oval shape, sometimes confused with the Megalithic enclosure at Danebury in Hampshire. According to the official parish publication, ''Danbury Parish Plan 2003'', first Iron Age settlers, then the Romans and finally the Dæningas tribe of Saxons occupied the Danbury area. The place-name 'Danbury' is first attested as ''Danengeberia'' in the Domesday Book of 1086. The name means 'the burgh or fort of Dene's people'. The same name is the origin of the name of the village and peninsula of Dengie in Essex. After the Norman Conquest, King William took the lands and settlement and granted it to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
