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» Ceramic wall adornment, 39;Hummingbird Eclipse39; by NOVICA. $69.95. A
Ceramic wall adornment, 39;Hummingbird Eclipse39; by NOVICA. $69.95. A
A ceramic is an inorganic, nonmetallic[a] sound material comprising metal, nonmetal or metalloid atoms mostly held in ionic and covalent bonds. The crystallinity of ceramic materials ranges from oriented to semi-crystalline highly, and often completely amorphous (e.g., eyeglasses). Varying crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (thoroughly explored in ceramic anatomist). With such a large selection of possible options for the structure/structure of any ceramic (e.g. almost all of the elements, almost all types of bonding, and all degrees of crystallinity), the breadth of the subject is huge, and identifiable characteristics (e.g. hardness, toughness, electrical conductivity, etc.) are hard to specify for the group all together. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility will be the norm,[1] with known exceptions to each one of these rules (e.g. piezoelectric ceramics, goblet transition heat, superconductive ceramics, etc.). Many composites, such as carbon and fiberglass fibers, while including ceramic materials, are not considered to be part of the ceramic family.The term "ceramic originates from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known mention of the root "ceram-" is the Mycenaean Greek ke-ra-me-we, "employees of ceramics", written in Linear B syllabic script.[5] The term "ceramic" can be utilized as an adjective to spell it out a material, process or product, or it could be used as a noun, either singular, or, additionally, as the plural noun "ceramics".The earliest ceramics created by humans were pottery objects, including 27,000-year-old figurines, made from clay, either alone or blended with other materials like silica, hardened, sintered, in flames. Ceramics were glazed and terminated to produce simple later, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include home, industrial and building products, as well as a wide range of ceramic art. Inside the 20th century, new ceramic materials were developed for use in advanced ceramic engineering, such as in semiconductors.Ceramic artifacts provide an important role in archaeology for understanding the culture, tendencies and technology of individuals of the past. They are really among the most common artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of accumulated sherds can be consistent with two main types of analysis: specialized and traditional.Traditional analysis entails sorting ceramic artifacts, sherds and bigger fragments into specific types based on style, composition, morphology and manufacturing. By creating these typologies it is possible to distinguish between different cultural styles, the purpose of the ceramic and technological state of the folks among other conclusions. Furthermore, by looking at stylistic changes of ceramics over time can you really separate (seriate) the ceramics into distinct diagnostic groups (assemblages). An evaluation of ceramic artifacts with known dated assemblages allows for a chronological assignment of these portions.[13]The technical approach to ceramic analysis consists of a finer examination of the composition of ceramic artifacts and sherds to look for the source of the materials and through this the possible manufacturing site. Key requirements are the composition of the clay and the temper found in the production of the article under study: temper is a materials put into the clay through the initial production level, and it is employed to aid the subsequent drying out process. Types of temper include shell portions, granite fragments and ground sherd items called 'grog'. Temper is usually identified by microscopic examination of the temper material. Clay identification is determined by an activity of refiring the ceramic, and assigning a color to it using Munsell Soil Color notation. By estimating both temper and clay compositions, and locating a region where both are known to occur, an assignment of the materials source can be produced. From the source assignment of the artifact further investigations can be produced in to the site of manufacture.
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Ceramic wall adornment, 39;Eclipse of Love39; by NOVICA. $57.95. Signed b
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A ceramic is an inorganic, nonmetallic[a] sound material comprising metal, nonmetal or metalloid atoms mostly held in ionic and covalent bonds. The crystallinity of ceramic materials ranges from oriented to semi-crystalline highly, and often completely amorphous (e.g., eyeglasses). Varying crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (thoroughly explored in ceramic anatomist). With such a large selection of possible options for the structure/structure of any ceramic (e.g. almost all of the elements, almost all types of bonding, and all degrees of crystallinity), the breadth of the subject is huge, and identifiable characteristics (e.g. hardness, toughness, electrical conductivity, etc.) are hard to specify for the group all together. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility will be the norm,[1] with known exceptions to each one of these rules (e.g. piezoelectric ceramics, goblet transition heat, superconductive ceramics, etc.). Many composites, such as carbon and fiberglass fibers, while including ceramic materials, are not considered to be part of the ceramic family.
The term "ceramic originates from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known mention of the root "ceram-" is the Mycenaean Greek ke-ra-me-we, "employees of ceramics", written in Linear B syllabic script.[5] The term "ceramic" can be utilized as an adjective to spell it out a material, process or product, or it could be used as a noun, either singular, or, additionally, as the plural noun "ceramics".
The earliest ceramics created by humans were pottery objects, including 27,000-year-old figurines, made from clay, either alone or blended with other materials like silica, hardened, sintered, in flames. Ceramics were glazed and terminated to produce simple later, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include home, industrial and building products, as well as a wide range of ceramic art. Inside the 20th century, new ceramic materials were developed for use in advanced ceramic engineering, such as in semiconductors.
Ceramic artifacts provide an important role in archaeology for understanding the culture, tendencies and technology of individuals of the past. They are really among the most common artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of accumulated sherds can be consistent with two main types of analysis: specialized and traditional.
Traditional analysis entails sorting ceramic artifacts, sherds and bigger fragments into specific types based on style, composition, morphology and manufacturing. By creating these typologies it is possible to distinguish between different cultural styles, the purpose of the ceramic and technological state of the folks among other conclusions. Furthermore, by looking at stylistic changes of ceramics over time can you really separate (seriate) the ceramics into distinct diagnostic groups (assemblages). An evaluation of ceramic artifacts with known dated assemblages allows for a chronological assignment of these portions.[13]The technical approach to ceramic analysis consists of a finer examination of the composition of ceramic artifacts and sherds to look for the source of the materials and through this the possible manufacturing site. Key requirements are the composition of the clay and the temper found in the production of the article under study: temper is a materials put into the clay through the initial production level, and it is employed to aid the subsequent drying out process. Types of temper include shell portions, granite fragments and ground sherd items called 'grog'. Temper is usually identified by microscopic examination of the temper material. Clay identification is determined by an activity of refiring the ceramic, and assigning a color to it using Munsell Soil Color notation. By estimating both temper and clay compositions, and locating a region where both are known to occur, an assignment of the materials source can be produced. From the source assignment of the artifact further investigations can be produced in to the site of manufacture.
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