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Harry Ricardo
Sir Harry Ralph Ricardo (26 January 1885 – 18 May 1974) was an English engineer who was one of the foremost engine designers and researchers in the early years of the development of the internal combustion engine. Among his many other works, he improved the engines that were used in the first tanks, oversaw the research into the physics of internal combustion that led to the use of octane ratings, was instrumental in development of the sleeve valve engine design, and invented the Diesel "Comet" Swirl chamber that made high-speed diesel engines economically feasible. Early life Harry Ricardo was born at 13 Bedford Square, London, in 1885, the eldest of three children, and only son of Halsey Ricardo, the architect, and his wife Catherine Jane, daughter of Sir Alexander Meadows Rendel, a civil engineer. Ricardo was descended from a brother of the famous political economist David Ricardo, a Sephardi Jew of Portuguese origin. He was one of the first people in England to see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Western Europe, with a population of 14.9 million. London stands on the River Thames in southeast England, at the head of a tidal estuary down to the North Sea, and has been a major settlement for nearly 2,000 years. Its ancient core and financial centre, the City of London, was founded by the Roman Empire, Romans as Londinium and has retained its medieval boundaries. The City of Westminster, to the west of the City of London, has been the centuries-long host of Government of the United Kingdom, the national government and Parliament of the United Kingdom, parliament. London grew rapidly 19th-century London, in the 19th century, becoming the world's List of largest cities throughout history, largest city at the time. Since the 19th cen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Octane Rating
An octane rating, or octane number, is a standard measure of a liquid fuel, fuel's ability to withstand Compression ratio, compression in an internal combustion engine without causing engine knocking. The higher the octane number, the more compression the fuel can withstand before detonating. Octane rating does not relate directly to the power output or the energy content of the fuel per unit mass or volume, but simply indicates the resistance to detonating under pressure without a spark. Whether a higher octane fuel improves or impairs an engine's performance depends on the design of the engine. In broad terms, fuels with a higher octane rating are used in higher-compression Petrol engine, gasoline engines, which may yield higher power for these engines. The added power in such cases comes from the way the engine is designed to compress the air/fuel mixture, and not directly from the rating of the gasoline. In contrast, fuels with lower octane (but higher cetane numbers) are idea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bertram Hopkinson
Bertram Hopkinson (11 January 1874 – 26 August 1918) was a British patent lawyer and Professor of Mechanism and Applied Mechanics at Cambridge University. In this position he researched flames, explosions and metallurgy and became a pioneer designer of the internal combustion engine. Background Hopkinson was born in Birmingham, in 1874, the son of John Hopkinson, an electrical engineer. He read law at Trinity College, Cambridge, and became a lawyer after his graduation. Following the death of his father, brother and two of his sisters in a mountaineering accident in 1898, Hopkinson switched to a career in engineering instead. Career In 1903, Hopkinson was elected to the Cambridge chair in mechanism and applied mechanics, and in 1910 he was elected a Fellow of the Royal Society. During World War I he was commissioned into the Royal Engineers, and opened a research establishment at Orford Ness where he and his team researched weapons, sights, and ammunition. In 1915, Hopkins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Litre
The litre ( Commonwealth spelling) or liter ( American spelling) (SI symbols L and l, other symbol used: ℓ) is a metric unit of volume. It is equal to 1 cubic decimetre (dm3), 1000 cubic centimetres (cm3) or 0.001 cubic metres (m3). A cubic decimetre (or litre) occupies a volume of (see figure) and is thus equal to one-thousandth of a cubic metre. The original French metric system used the litre as a base unit. The word ''litre'' is derived from an older French unit, the '' litron'', whose name came from Byzantine Greek—where it was a unit of weight, not volume—via Late Medieval Latin, and which equalled approximately 0.831 litres. The litre was also used in several subsequent versions of the metric system and is accepted for use with the SI, despite it not being an SI unit The International System of Units, internationally known by the abbreviation SI (from French ), is the modern form of the metric system and the world's most widely used system of unit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Quart
The imperial system of units, imperial system or imperial units (also known as British Imperial or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments. The imperial system developed from earlier English units as did the related but differing system of customary units of the United States. The imperial units replaced the Winchester Standards, which were in effect from 1588 to 1825. The system came into official use across the British Empire in 1826. By the late 20th century, most nations of the former empire had officially adopted the metric system as their main system of measurement, but imperial units are still used alongside metric units in the United Kingdom and in some other parts of the former empire, notably Canada. The modern UK legislation defining the imperial system of units is given in the Weights and Measures Act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
West Sussex
West Sussex is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Surrey to the north, East Sussex to the east, the English Channel to the south, and Hampshire to the west. The largest settlement is Crawley, and the county town is the city of Chichester. The county has a land area of and a population of . Along the south coast is a near-continuous urban area which includes the towns of Bognor Regis (63,855), Littlehampton (55,706), and Worthing (111,338); the latter two are part of the Brighton and Hove built-up area, which extends into East Sussex and has a total population of 474,485. The interior of the county is generally rural; the largest towns are Crawley (118,493) and Horsham (50,934), both located in the north-east; Chichester is in the south-west and has a population of 26,795. West Sussex contains seven local government Non-metropolitan district, districts, which are part of a two-tier non-metropolitan county administered by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edburton
Edburton is a small village and former civil parish, now in the parish of Upper Beeding, in the Horsham district, in the county of West Sussex, England. It is on the road from Upper Beeding to Fulking. In 1931 the parish had a population of 83. On 1 April 1933 the parish was abolished and merged with Upper Beeding. History The village's name means Ēadburg's ''tūn'', or settlement. Ēadburg is a woman's name, and it is sometimes claimed that it refers to Edburga of Winchester, a granddaughter of King Alfred the Great and daughter of his successor King Edward the Elder. In the Sussex dialect the village was called Aburton, as can be seen from the name of Aburton Farm, a farmstead now converted to housing. The church supposedly founded by this Edburga c. 940 at Edburton collapsed and was rebuilt in the late twelfth century on the same foundations. This indicates that there was a substantial population living where there are only a few houses now. The situation at the foot of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancing, West Sussex
Lancing is a large coastal village and civil parish in the Adur district of West Sussex, England, on the western edge of the Adur Valley. It occupies part of the narrow central section of the Sussex coastal plain between smaller Sompting to the west, larger Shoreham-by-Sea Shoreham-by-Sea (often shortened to Shoreham) is a coastal town and port in the Adur District, Adur district, in the county of West Sussex, England. In 2011 it had a population of 20,547. The town is bordered to its north by the South Downs, to ... to the east, and the parish of Coombes to the north. Excluding definitive suburbs it may have the largest undivided nucleated village, village cluster in Britain. However, its economy is commonly analysed as integral to the Brighton/Worthing/Littlehampton conurbation. Its settled area beneath the South Downs National Park covers , the majority of its land. The Lancing area is characterised by mid-rise coastal urban homes, farmland, and wildlife reserves of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slade School Of Art
The UCL Slade School of Fine Art (informally The Slade) is the art school of University College London (UCL) and is based in London, England. It has been ranked as the UK's top art and design educational institution. The school is organised as a department of UCL's Faculty of Arts and Humanities. History The school traces its roots back to 1868 when lawyer and philanthropist Felix Slade (1788–1868) bequeathed funds to establish three Chairs in Fine Art, to be based at Oxford University, Cambridge University and University College London, where six studentships were endowed. Distinguished past teachers include Henry Tonks, Wilson Steer, Randolph Schwabe, William Coldstream, Andrew Forge, Lucian Freud, John Hilliard, Bruce McLean, Alfred Gerrard and Phyllida Barlow. Edward Allington was Professor of Fine Art and Head of Graduate Sculpture until his death in 2017. Two of its most important periods were immediately before, and immediately after, the turn of the twentieth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portuguese People
The Portuguese people ( – masculine – or ''Portuguesas'') are a Romance languages, Romance-speaking ethnic group and nation Ethnic groups in Europe, indigenous to Portugal, a country that occupies the west side of the Iberian Peninsula in Southern Europe, south-west Europe, who share Culture of Portugal, culture, ancestry and Portuguese language, language. The Portuguese state began with the founding of the County of Portugal in 868. Following the Battle of São Mamede (1128), Portugal gained international recognition as a Kingdom of Portugal, kingdom through the Treaty of Zamora and the papal bull Manifestis Probatum. This Portuguese state paved the way for the Portuguese people to unite as a nation. The Portuguese Portuguese maritime exploration, explored Hic sunt Dracones, distant lands previously unknown to Europeans—in the Americas, Africa, Asia and Oceania (southwest Pacific Ocean). In 1415, with the conquest of Ceuta, the Portuguese took a significant role in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sephardic Jewish
Sephardic Jews, also known as Sephardi Jews or Sephardim, and rarely as Iberian Peninsular Jews, are a Jewish diaspora population associated with the historic Jewish communities of the Iberian Peninsula (Spain and Portugal) and their descendants. The term "Sephardic" comes from '' Sepharad'', the Hebrew word for Iberia. These communities flourished for centuries in Iberia until they were expelled in the late 15th century. Over time, "Sephardic" has also come to refer more broadly to Jews, particularly in the Middle East and North Africa, who adopted Sephardic religious customs and legal traditions, often due to the influence of exiles. In some cases, Ashkenazi Jews who settled in Sephardic communities and adopted their liturgy are also included under this term. Today, Sephardic Jews form a major component of world Jewry, with the largest population living in Israel. The earliest documented Jewish presence in the Iberian Peninsula dates to the Roman period, beginning in the fir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Ricardo
David Ricardo (18 April 1772 – 11 September 1823) was a British political economist, politician, and member of Parliament. He is recognized as one of the most influential classical economists, alongside figures such as Thomas Malthus, Adam Smith and James Mill. Ricardo was born in London as the third surviving child of a successful stockbroker and his wife. He came from a Sephardic Jewish family of Portuguese origin. At 21, he eloped with a Quaker and converted to Unitarianism, causing estrangement from his family. He made his fortune financing government borrowing and later retired to an estate in Gloucestershire. Ricardo served as High Sheriff of Gloucestershire and bought a seat in Parliament as an earnest reformer. He was friends with prominent figures like James Mill, Jeremy Bentham, and Thomas Malthus, engaging in debates over various topics. Ricardo was also a member of The Geological Society, and his youngest sister was an author. As MP for Portarlington, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
