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Catenary Arches
A catenary arch is a type of architectural arch that follows an inverted catenary curve. The catenary curve has been employed in buildings since ancient times. It forms an underlying principle to the overall system of vaults and buttresses in stone vaulted Gothic cathedrals and in Renaissance domes. It is not a parabolic arch, although the non- circumferential curves used in arch designs (parabola, catenary, and weighted catenary) look similar, and match at shallow profiles, so a catenary is often misclassified as a parabola (per Galileo, "the angingchain fits its parabola almost perfectly"). In history The 17th-century scientist Robert Hooke wrote: "''Ut pendet continuum flexile, sic stabit contiguum rigidum inversum''", or, "As hangs a flexible cable so, inverted, stand the touching pieces of an arch." A note written by Thomas Jefferson in 1788 reads, "I have lately received from Italy a treatise on the equilibrium of arches, by the Abbé Mascheroni. It appears to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catenaria In Terra Cruda A Più Corsi Di Conci
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Catenaria may refer to: * An alternate spelling of catenary curve * '' Catenaria'' Benth. 1852, a legume genus * A fungal genus in Blastocladiales Blastocladiomycota is one of the currently recognized phyla within the kingdom Fungi#Taxonomic groups, Fungi.Hibbett DS et al. 2007. A higher-level phylogenetic classification of the fungi. Mycological Research 111:509–47. Blastocladiomycota w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catenary
In physics and geometry, a catenary ( , ) is the curve that an idealized hanging chain or wire rope, cable assumes under its own weight when supported only at its ends in a uniform gravitational field. The catenary curve has a U-like shape, superficially similar in appearance to a parabola, which it is not. The curve appears in the design of certain types of Catenary arch, arches and as a cross section of the catenoid—the shape assumed by a soap film bounded by two parallel circular rings. The catenary is also called the alysoid, chainette,#MathWorld, MathWorld or, particularly in the materials sciences, an example of a funicular curve, funicular. Rope statics describes catenaries in a classic statics problem involving a hanging rope. Mathematically, the catenary curve is the Graph of a function, graph of the hyperbolic cosine function. The surface of revolution of the catenary curve, the catenoid, is a minimal surface, specifically a minimal surface of revolution. A ha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramesseum
The Ramesseum is the Temples of a Million years, memorial temple (or mortuary temple) of Pharaoh Ramesses II ("Ramesses the Great", also spelled "Ramses" and "Rameses"). It is located in the Theban Necropolis in Upper Egypt, on the west of the Nile, River Nile, across from the modern city of Luxor. The name – or at least its French language, French form Rhamesséion – was coined by Jean-François Champollion, who visited the ruins of the site in 1829 and first identified the Egyptian hieroglyph, hieroglyphs making up Ramesses's names and titles on the walls. It was originally called the ''House of millions of years of Usermaatra-setepenra that unites with Thebes-the-city in the Amun, domain of Amon.'' ''Usermaatra-setepenra'' was the Prenomen (Ancient Egypt), prenomen of Ramesses II. History Ramesses II modified, usurped, or constructed many buildings from the ground up, and the most splendid of these, in accordance with New Kingdom of Egypt, New Kingdom royal burial pract ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saqqara Ostracon
The Saqqara ostracon is an ostracon, an Egyptian antiquity tracing to the period of Djoser ( 2650 BC). Excavation It was excavated in or near 1925 in Djoser's Pyramid in Saqqara, Egypt. Description It is an apparently complete flake made of limestone. It is 15 × 17.5 × 5 cm. In a few places, small portions of the surface seem to have been scaled away. It appears to date to the period of Djoser (~ 2650 BC). Units written about The ostracon has mentioned several units: * Cubits * Palms * Fingers The curve The curve appears catenary. See also * Ancient Egyptian units of measurement * Ancient Egyptian mathematics * Ancient Egyptian technology Ancient Egyptian technology describes devices and technologies invented or used in Ancient Egypt. The Egyptians invented and used many simple machines, such as the inclined plane, ramp and the lever, to aid construction processes. They used rope t ... References Ancient Egyptian science Egyptian mathematics Ancient Egypt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Palau Güell
The Palau Güell (, ) is a mansion designed by the architect Antoni Gaudí for the industrial tycoon Eusebi Güell, and was built between 1886 and 1888. It is situated on the Carrer Nou de la Rambla, in the El Raval neighborhood of Barcelona in Catalonia, Spain. It is part of the UNESCO World Heritage Site "Works of Antoni Gaudí". The home is centered around the main room for entertaining high society guests. Guests entered the home in horse-drawn carriages through the front iron gates, which featured a parabolic arch and intricate patterns of forged ironwork resembling seaweed and in some parts a horsewhip. Animals could be taken down a ramp and kept in the livery stable in the basement where the servants resided, while the guests went up the stairs to the receiving room. The ornate walls and ceilings of the receiving room disguised small viewing windows high on the walls where the owners of the home could view their guests from the upper floor and get a "sneak peek" befor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kings College Chapel
King's College Chapel is the chapel of King's College in the University of Cambridge. It is considered one of the finest examples of late Perpendicular Gothic English architecture and features the world's largest fan vault. The Chapel was built in phases by a succession of kings of England from 1446 to 1515, a period which spanned the Wars of the Roses and three subsequent decades. The Chapel's large stained glass windows were completed by 1531, and its early Renaissance rood screen was erected in 1532–36. The Chapel is an active house of worship, and home of the King's College Choir. It is a landmark and a commonly used symbol of the city of Cambridge. Construction Henry VI planned a university counterpart to Eton College (whose Chapel is very similar, but not on the scale intended by Henry). The King decided the dimensions of the Chapel. Reginald Ely was most likely the architect and worked on the site since 1446. Two years earlier Reginald was charged with sourcing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
St Paul's Cathedral
St Paul's Cathedral, formally the Cathedral Church of St Paul the Apostle, is an Anglican cathedral in London, England, the seat of the Bishop of London. The cathedral serves as the mother church of the Diocese of London in the Church of England. It is on Ludgate Hill at the highest point of the City of London. Its dedication in honour of Paul the Apostle dates back to the original church on this site, founded in AD 604. The high-domed present structure, which was completed in 1710, is a Listed Building, Grade I listed building that was designed in the English Baroque style by Sir Christopher Wren. The cathedral's reconstruction was part of a major rebuilding programme initiated in the aftermath of the Great Fire of London. The earlier Gothic cathedral (Old St Paul's Cathedral), largely destroyed in the Great Fire, was a central focus for medieval and early modern London, including Paul's walk and St Paul's Churchyard, being the site of St Paul's Cross. The cathedral is o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christopher Wren
Sir Christopher Wren FRS (; – ) was an English architect, astronomer, mathematician and physicist who was one of the most highly acclaimed architects in the history of England. Known for his work in the English Baroque style, he was accorded responsibility for rebuilding 52 churches in the City of London after the Great Fire in 1666, including what is regarded as his masterpiece, St Paul's Cathedral, on Ludgate Hill, completed in 1710. The principal creative responsibility for a number of the churches is now more commonly attributed to others in his office, especially Nicholas Hawksmoor. Other notable buildings by Wren include the Royal Hospital Chelsea, the Old Royal Naval College, Greenwich, and the south front of Hampton Court Palace. Educated in Latin and Aristotelian physics at the University of Oxford, Wren was a founder of the Royal Society and served as its president from 1680 to 1682. His scientific work was highly regarded by Isaac Newton and Blaise ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florence Cathedral
Florence Cathedral (), formally the Cathedral of Saint Mary of the Flower ( ), is the cathedral of the Catholic Archdiocese of Florence in Florence, Italy. Commenced in 1296 in the Gothic style to a design of Arnolfo di Cambio and completed by 1436 with a dome engineered by Filippo Brunelleschi, the basilica's exterior is faced with polychrome marble panels in various shades of green and pink, alternated by white, and features an elaborate 19th-century Gothic Revival western façade by Emilio De Fabris. The cathedral complex, in Piazza del Duomo, includes the Florence Baptistery and Giotto's Campanile. These three buildings are part of the UNESCO World Heritage Site covering the historic centre of Florence and are a major tourist attraction of Tuscany. The basilica is one of world's largest churches and its dome is still the largest masonry dome ever constructed. The cathedral is the mother church and seat of the Archdiocese of Florence, whose archbishop is Gherardo Gam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brunelleschi
Filippo di ser Brunellesco di Lippo Lapi (1377 – 15 April 1446), commonly known as Filippo Brunelleschi ( ; ) and also nicknamed Pippo by Leon Battista Alberti, was an Italian architect, designer, goldsmith and sculptor. He is considered to be a founding father of Renaissance architecture. He is recognized as the first modern engineer, planner, and sole construction supervisor. In 1421, Brunelleschi became the first person to receive a patent in the Western world. He is most famous for designing the dome of the Florence Cathedral, and for the mathematical technique of perspective (graphical), linear perspective in art which governed pictorial depictions of space until the late 19th century and influenced the rise of modern science. His accomplishments also include other architectural works, sculpture, mathematics, engineering, and ship design. Most surviving works can be found in Florence. Biography Early life Brunelleschi was born in Florence, Italy, in 1377. His father was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dingle Peninsula
The Dingle Peninsula (; anglicised as Corkaguiny or Corcaguiny, the name of the corresponding barony) is the northernmost of the major peninsulas in County Kerry. It ends beyond the town of Dingle at Dunmore Head, the westernmost point of mainland Ireland. It is separated from the Iveragh Peninsula to the south by the Dingle Bay. Name The Dingle Peninsula is named after the town of Dingle. The peninsula is also commonly called ''Corca Dhuibhne'' ( Corcu Duibne) even when those referring to it are speaking in English. ''Corca Dhuibhne'', which means "seed or tribe of Duibhne" (a Goddess from Irish mythology and an Irish clan name), refers to the ''túath'' (people, nation) of ''Corco Dhuibhne'' who occupied the peninsula in the Middle Ages and who also held a number of territories in the south and east of County Kerry. Geography The peninsula exists because of the band of sandstone rock that forms the Slieve Mish mountain range at the neck of the peninsula, in the east, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
