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Uriah A. Boyden
Uriah Atherton Boyden (February 17, 1804 – October 17, 1879) was an American civil and mechanical engineer and inventor from Foxborough, Massachusetts best known for the development of a water turbine, that later became known as the Boyden Turbine around 1844, while working for the Appleton Company in Lowell, Massachusetts. Boyden improved upon a turbine developed by French engineer Fourneyron by adding a conical approach passage for the incoming water—submerged diffusers, guide vanes and a diverting exit passage. Uriah was also the younger brother of Seth Boyden, also a notable inventor who perfected a process for making patent leather, among other developments. Early life Uriah Atherton Boyden was born in Foxborough, Massachusetts on February 17, 1804, the son of Seth Boyden and Susannah Atherton. His father was farmer and blacksmith who had invented a machine to split leather. Career In 1813, Uriah moved to Newark, New Jersey to work in his elder brother Seth's leat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boyden Turbine
Boyden may refer to: Places * Boyden Cave, a mile-long cavern located in the Giant Sequoia National Monument of the Sequoia National Forest, California, United States * Boyden Gate, parish of Chislet, Kent, England * Boyden–Hull High School, in Hull, Iowa, United States * Boyden, Iowa, United States * Boyden Library in Foxborough, Massachusetts, United States * Boyden Observatory, South Africa * Seth Boyden House in Foxborough, Massachusetts, United States People with the surname * Boyden Carpenter, American musician * C. Boyden Gray, American attorney * Amanda Boyden, American novelist * David Dodge Boyden, American musicologist * Edward Boyden, American neuroscientist * Elbridge Boyden, American architect * Frank Boyden Deerfield Academy Headmaster * Ian Boyden, American artist * James Boyden, British politician * Jennifer Boyden, American poet * John Boyden, British music industry executive * Joseph Boyden, Canadian novelist * Linda Boyden, American poet * Malcolm Boyden, Bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Francis Turbine
The Francis turbine is a type of water turbine. It is an inward-flow reaction turbine that combines radial and axial flow concepts. Francis turbines are the most common water turbine in use today, and can achieve over 95% efficiency. The process of arriving at the modern Francis runner design took from 1848 to approximately 1920. It became known as the Francis turbine around 1920, being named after British-American engineer James B. Francis who in 1848 created a new turbine design. Francis turbines are primarily used for producing electricity. The power output of the electric generators generally ranges from just a few kilowatts up to 1000 MW, though mini-hydro installations may be lower. The best performance is seen when the head height is between . Penstock diameters are between . The speeds of different turbine units range from 70 to 1000 rpm. A wicket gate around the outside of the turbine's rotating runner controls the rate of water flow through the turbine for d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lancashire
Lancashire ( , ; abbreviated Lancs) is the name of a historic county, ceremonial county, and non-metropolitan county in North West England. The boundaries of these three areas differ significantly. The non-metropolitan county of Lancashire was created by the Local Government Act 1972. It is administered by Lancashire County Council, based in Preston, and twelve district councils. Although Lancaster is still considered the county town, Preston is the administrative centre of the non-metropolitan county. The ceremonial county has the same boundaries except that it also includes Blackpool and Blackburn with Darwen, which are unitary authorities. The historic county of Lancashire is larger and includes the cities of Manchester and Liverpool as well as the Furness and Cartmel peninsulas, but excludes Bowland area of the West Riding of Yorkshire transferred to the non-metropolitan county in 1974 History Before the county During Roman times the area was part of the Bri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorchester, Massachusetts
Dorchester (colloquially referred to as Dot) is a Boston neighborhood comprising more than in the City of Boston, Massachusetts, United States. Originally, Dorchester was a separate town, founded by Puritans who emigrated in 1630 from Dorchester, Dorset, England, to the Massachusetts Bay Colony. This dissolved municipality, Boston's largest neighborhood by far, is often divided by city planners in order to create two planning areas roughly equivalent in size and population to other Boston neighborhoods. The neighborhood is named after the town of Dorchester in the English county of Dorset, from which Puritans emigrated on the ship ''Mary and John'', among others. Founded in 1630, just a few months before the founding of the city of Boston, Dorchester now covers a geographic area approximately equivalent to nearby Cambridge.History ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Atherton (early Settler To Massachusetts)
James Atherton ( 16241710) was an early settler and one of the founders of Lancaster, Massachusetts. He emigrated to the New England Colonies from the parish of Wigan, Lancashire, England in 1635. Emigration The Massachusetts Bay Colony had been founded by the owners of the Massachusetts Bay Company, which included investors in the failed Dorchester Company which had established a short-lived settlement on Cape Ann in 1623. The colony began in 1628 and was the company's second attempt at colonization. It was successful, with about 20,000 people migrating to New England in the 1630s. Atherton was part of this first wave of Puritan migration to New England (1620–1640). Atherton was a child emigrant. Biographers agree that he travelled from Lancashire to Bristol and then sailed on the James, in the company of the Reverend Richard Mather; a minister from his home town and Humphrey Atherton, an elder relative (but not a sibling). The latter would later become the mayor general of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Museum Of American History
The National Museum of American History: Kenneth E. Behring Center collects, preserves, and displays the heritage of the United States in the areas of social, political, cultural, scientific, and military history. Among the items on display is the original Star-Spangled Banner (flag), Star-Spangled Banner. The museum is part of the Smithsonian Institution and located on the National Mall at 14th Street (Washington, D.C.), 14th Street and Constitution Avenue NW in Washington, D.C. History The museum opened in 1964 as the Museum of History and Technology. It was one of the last structures designed by the renowned architectural firm McKim Mead & White. In 1980, the museum was renamed the National Museum of American History to represent its mission of the collection, care, study, and interpretation of objects that reflect the experience of the American people. The museum site had previously held two Temporary buildings of the National Mall, temporary war buildings constructed in 194 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boyden Observatory
Boyden Observatory is an astronomical research observatory and science education centre located in Maselspoort, north-east of the city of Bloemfontein in Free State, South Africa. The observatory is managed by the Physics Department of the University of the Free State (UFS). The Friends of Boyden assist the observatory as a public support group, organising open evenings and protecting its public interest. Boyden also makes use of members of ASSA Bloemfontein Centre, the amateur astronomy club of the city, for presenters and telescope assistants. History The Boyden Station of Harvard Observatory was founded in 1889 by Harvard University at Mount Harvard near Lima, Peru. It was relocated to Arequipa, Peru in October 1890 ( obs. code: 800). It was named after Uriah A. Boyden, who in 1879 left in his will $238,000 to Harvard Observatory to be used for astronomical purposes. Significant work done at Arequipa include the discovery of Phoebe, an outer moon of Saturn, by Willia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arequipa
Arequipa (; Aymara and qu, Ariqipa) is a city and capital of province and the eponymous department of Peru. It is the seat of the Constitutional Court of Peru and often dubbed the "legal capital of Peru". It is the second most populated city in Peru, after Lima, with an urban population of 1,008,290 inhabitants according to the 2017 national census. Its metropolitan area integrates twenty-one districts, including the foundational central area, which it is the seat of the city government. The city had a nominal GDP of US$9,445 million, equivalent to US$10,277 per capita (US$18,610 per capita PPP) in 2015, making Arequipa the city with the second-highest economic activity in Peru. Arequipa is also an important industrial and commercial center of Peru,Chanfreau, p. 40 and is considered as the second industrial city of the country. Within its industrial activity the manufactured products and the textile production of wool of camelids. The town maintains close commercial links wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Wilson Observatory
The Mount Wilson Observatory (MWO) is an astronomical observatory in Los Angeles County, California, United States. The MWO is located on Mount Wilson, a peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles. The observatory contains two historically important telescopes: the Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60-inch telescope which was the largest operational telescope in the world when it was completed in 1908. It also contains the Snow solar telescope completed in 1905, the 60 foot (18 m) solar tower completed in 1908, the 150 foot (46 m) solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in 2004 and was the largest optical interferometer in the world at its completion. Due to the inversion layer that traps warm air and smog over Los Angeles, Mount Wilson has steadier air than any other location in Nor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mount Wilson (California)
Mount Wilson is a peak in the San Gabriel Mountains, located within the San Gabriel Mountains National Monument and Angeles National Forest in Los Angeles County, California. With only minor topographical prominence the peak is not naturally noticeable from a distance, although it is easily identifiable due to the large number of antennas near its summit. It is a subsidiary peak of nearby San Gabriel Peak. It is the location of the Mount Wilson Observatory, which is an important astronomical facility in Southern California with historic and telescopes, and and solar towers. The newer CHARA Array, run by Georgia State University, is also sited there and does important interferometric stellar research. The summit is at . While not the tallest peak in its vicinity, it is high enough in elevation that snow can sometimes interrupt astronomical activities on the mountain. All of the mountains south of the summit are far shorter leading to unobstructed views across the Los An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvard College Observatory
The Harvard College Observatory (HCO) is an institution managing a complex of buildings and multiple instruments used for astronomical research by the Harvard University Department of Astronomy. It is located in Cambridge, Massachusetts, United States, and was founded in 1839. With the Smithsonian Astrophysical Observatory, it forms part of the Center for Astrophysics Harvard & Smithsonian. HCO houses a collection of approximately 500,000 astronomical plates taken between the mid-1880s and 1989 (with a gap from 1953–1968). This 100-year coverage is a unique resource for studying temporal variations in the universe. The Digital Access to a Sky Century @ Harvard project is digitally scanning and archiving these photographic plates. History In 1839, the Harvard Corporation voted to appoint William Cranch Bond, a prominent Boston clockmaker, as "Astronomical Observer to the University" (at no salary). This marked the founding of the Harvard College Observatory. HCO's first tele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Charles Pickering
Edward Charles Pickering (July 19, 1846 – February 3, 1919) was an American astronomer and physicist and the older brother of William Henry Pickering. Along with Carl Vogel, Pickering discovered the first spectroscopic binary stars. He wrote ''Elements of Physical Manipulations'' (2 vol., 1873–76). Personal life Pickering was born at 43 Bowdoin Street in Boston, Massachusetts, on July 19, 1846,Obituary, ''Boston Globe'', February 4, 1919 to a distinguished, cultivated family consisting of his brother, William Henry Pickering, father, Edward Pickering, and his mother, Charlotte Hammond. Edward's brother, William, was a graduate of MIT and professor of physics and astronomy. Edward was interested in the stars as a boy and constructed his own telescope by the age of 12. Pickering enjoyed his work at the observatory, but he was also enjoyed mountain climbing and bicycling in earlier days and later he was an interested spectator of football games. He was co-founder and first presi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
