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Ru Ware
Ru ware, Ju ware, or "Ru official ware" () is a famous and extremely rare type of Chinese pottery from the Song dynasty, produced for the imperial court for a brief period around 1100. Fewer than 100 complete pieces survive, though there are later imitations which do not entirely match the originals. Most have a distinctive pale "duck-egg" blue glaze, "like the blue of the sky in a clearing amongst the clouds after rain" according to a medieval connoisseur, and are otherwise undecorated, though their colours vary and reach into a celadon green. The shapes include dishes, probably used as brush-washers, cups, wine bottles (carafes in modern terms), small vases, and censers and incense-burners. They can be considered as a particular form of celadon wares. Ru ware represents one of the Five Great Kilns identified by later Chinese writers. The wares were reserved for the Imperial court, with according to one contemporary source only those they rejected reaching a wider market ...
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Ru Ware (cropped)
''Ru, ru, or RU may refer to: Russia * Russia (ISO 3166-1 alpha-2 country code) * Russian language (ISO 639 alpha-2 code) * .ru, the Internet country code top-level domain for Russia China * Rù (入), the entering tone in Chinese language phonetics * Rú (儒), a Chinese language term for Confucianism * Ru (surname) (茹), a Chinese surname * Ru River (汝), in Henan, China * Ru ware, a type of Chinese pottery Educational institutions * Radboud University Nijmegen, in Nijmegen, Netherlands * Radford University, in Virginia, USA * Rai University in Gujarat, India * Rajshahi University in Bangladesh * Rama University in India * Ramkhamhaeng University in Thailand * Regis University in Colorado, USA * Reykjavík University Iceland * Rhodes University in Grahamstown, South Africa * Rockefeller University in New York, USA * Rockhurst University in Missouri, USA * Roosevelt University in Chicago, Illinois, USA * Rowan University in New Jersey, USA * Ruse University in Bulgari ...
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Northern Celadon
Yaozhou ware () is a type of celadon or greenware in Chinese pottery, which was at its height during the Northern Song dynasty. It is the largest and typically the best of the wares in the group of Northern Celadon wares. It is especially famous for the rich effects achieved by decoration in shallow carving under a green celadon glaze which sinks into the depressions of the carving giving contrasts of light and dark shades. Although "the term Northern Celadon has never been regarded as anything but vague and unsatisfactory", and the Yaozhou kiln site has been known for a long time, some scholars have felt that the wider term retains its usefulness as an umbrella category and because of the difficulty of distinguishing Yaozhou wares from those of other sites. The most important of these are at Linru and Baofeng in Henan, but their quality is regarded as inferior to Yaozhou, although the bodies are extremely similar, and the range of glaze colours overlap. The "products are onl ...
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Earthenware
Earthenware is glazed or unglazed nonvitreous pottery that has normally been fired below . Basic earthenware, often called terracotta, absorbs liquids such as water. However, earthenware can be made impervious to liquids by coating it with a ceramic glaze, which the great majority of modern domestic earthenware has. The main other important types of pottery are porcelain, bone china, and stoneware, all fired at high enough temperatures to vitrify. Earthenware comprises "most building bricks, nearly all European pottery up to the seventeenth century, most of the wares of Egypt, Persia and the near East; Greek, Roman and Mediterranean, and some of the Chinese; and the fine earthenware which forms the greater part of our tableware today" ("today" being 1962).Dora Billington, ''The Technique of Pottery'', London: B.T.Batsford, 1962 Pit fired earthenware dates back to as early as 29,000–25,000 BC, and for millennia, only earthenware pottery was made, with stoneware graduall ...
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Vitrification
Vitrification (from Latin ''vitreum'', "glass" via French ''vitrifier'') is the full or partial transformation of a substance into a glass, that is to say, a non-crystalline amorphous solid. Glasses differ from liquids structurally and glasses possess a higher degree of connectivity with the same Hausdorff dimensionality of bonds as crystals: dimH = 3. In the production of ceramics, vitrification is responsible for its impermeability to water. Vitrification is usually achieved by heating materials until they liquidize, then cooling the liquid, often rapidly, so that it passes through the glass transition to form a glassy solid. Certain chemical reactions also result in glasses. In terms of chemistry, vitrification is characteristic for amorphous materials or disordered systems and occurs when bonding between elementary particles (atoms, molecules, forming blocks) becomes higher than a certain threshold value. Thermal fluctuations break the bonds; therefore, the low ...
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Stoneware
Stoneware is a rather broad term for pottery or other ceramics fired at a relatively high temperature. A modern technical definition is a Vitrification#Ceramics, vitreous or semi-vitreous ceramic made primarily from stoneware clay or non-refractory fire clay. Whether vitrified or not, it is nonporous (does not soak up liquids);Arthur Dodd & David Murfin. ''Dictionary of Ceramics''; 3rd edition. The Institute of Minerals, 1994. it may or may not be glaze (ceramics), glazed. Historically, around the world, it has been developed after earthenware and before porcelain, and has often been used for high-quality as well as utilitarian wares. As a rough guide, modern earthenwares are normally fired in a kiln at temperatures in the range of about 1,000 °Celsius, C (1,830 Fahrenheit, °F) to ; stonewares at between about to ; and porcelains at between about to . Historically, reaching high temperatures was a long-lasting challenge, and temperatures somewhat below these were used for a lo ...
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Lard
Lard is a semi-solid white fat product obtained by rendering the fatty tissue of a pig.Lard
entry in the online ''Merriam-Webster Dictionary''. Accessed on 2020-07-05.
It is distinguished from , a similar product derived from fat of or . Lard can be rendered by steaming, boiling, or dry heat. The culinary qualities of lard vary somewhat depending on the origin and processing method; if properly rendered, it may be nearly odorless and tasteless.E. S. Clifton, Joseph Kastelic, and Be ...
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Chinese Art
Chinese art is visual art that originated in or is practiced in China, Greater China or by Chinese artists. Art created by Chinese residing outside of China can also be considered a part of Chinese art when it is based in or draws on Chinese culture, heritage, and history. Early " Stone Age art" dates back to 10,000 BC, mostly consisting of simple pottery and sculptures. After that period, Chinese art, like Chinese history, was typically classified by the succession of ruling dynasties of Chinese emperors, most of which lasted several hundred years. The Palace Museum in Beijing and the National Palace Museum in Taipei contains extensive collections of Chinese art. Chinese art is marked by an unusual degree of continuity within, and consciousness of, tradition, lacking an equivalent to the Western collapse and gradual recovery of Western classical styles of art. Decorative arts are extremely important in Chinese art, and much of the finest work was produced in large works ...
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Jade
Jade is a mineral used as jewellery or for ornaments. It is typically green, although may be yellow or white. Jade can refer to either of two different silicate minerals: nephrite (a silicate of calcium and magnesium in the amphibole group of minerals), or jadeite (a silicate of sodium and aluminium in the pyroxene group of minerals). Jade is well known for its ornamental use in East Asian, South Asian, and Southeast Asian art. It is commonly used in Latin America, such as Mexico and Guatemala. The use of jade in Mesoamerica for symbolic and ideological ritual was influenced by its rarity and value among pre-Columbian Mesoamerican cultures, such as the Olmecs, the Maya, and other ancient civilizations of the Valley of Mexico. Etymology The English word ''jade'' is derived (via French and Latin 'flanks, kidney area') from the Spanish term (first recorded in 1565) or 'loin stone', from its reputed efficacy in curing ailments of the loins and kidneys. ''Nephrite'' is der ...
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Porcelain
Porcelain () is a ceramic material made by heating substances, generally including materials such as kaolinite, in a kiln to temperatures between . The strength and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and formation of the mineral mullite within the body at these high temperatures. Though definitions vary, porcelain can be divided into three main categories: hard-paste, soft-paste, and bone china. The category that an object belongs to depends on the composition of the paste used to make the body of the porcelain object and the firing conditions. Porcelain slowly evolved in China and was finally achieved (depending on the definition used) at some point about 2,000 to 1,200 years ago; it slowly spread to other East Asian countries, then to Europe, and eventually to the rest of the world. Its manufacturing process is more demanding than that for earthenware and stoneware, the two other main types of pottery, and it ...
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