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Ceramic wall adornment, 39;Eclipse of Love39; by NOVICA. $57.95. Signed
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A ceramic is an inorganic, nonmetallic[a] sturdy material comprising metallic, nonmetal or metalloid atoms held in ionic and covalent bonds primarily. The crystallinity of ceramic materials ranges from oriented to semi-crystalline highly, and often completely amorphous (e.g., eyeglasses). Varying crystallinity and electron usage in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (extensively investigated in ceramic engineering). With such a huge range of possible options for the composition/structure of the ceramic (e.g. all of the elements practically, nearly all types of bonding, and all degrees of crystallinity), the breadth of the topic is huge, and identifiable attributes (e.g. hardness, toughness, electrical power conductivity, etc.) are hard to specify for the merged 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 of these rules (e.g. piezoelectric ceramics, a glass transition temps, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon fiber, while made up of ceramic materials, aren't regarded as area of the ceramic family.The word "ceramic comes from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The initial known reference to the main "ceram-" is the Mycenaean Greek ke-ra-me-we, "staff of ceramics", written in Linear B syllabic script.[5] The term "ceramic" may be used as an adjective to describe a material, process or product, or it might be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".The initial ceramics created by humans were pottery objects, including 27,000-year-old figurines, made from clay, either alone or mixed with other materials like silica, hardened, sintered, in open fire. Ceramics were glazed and terminated to produce even later, colored surfaces, reducing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, professional and building products, as well as a wide range of ceramic art. In the 20th century, new ceramic materials were developed for use in advanced ceramic executive, such just as semiconductors.Ceramic artifacts own an important role in archaeology for understanding the culture, habit and technology of individuals of days gone by. They are among the most typical artifacts found at an archaeological site, generally in the form of small fragments of broken pottery called sherds. Processing of accumulated sherds can be regular with two main types of examination: technical and traditional.Traditional analysis will involve 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 scientific state of the communal people among other conclusions. Furthermore, by looking at stylistic changes of ceramics over time is it possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). An evaluation of ceramic artifacts with known dated assemblages allows for a chronological project of these portions.[13]The technical approach to ceramic analysis involves a finer study of the structure of ceramic artifacts and sherds to look for the source of the material and through this the possible manufacturing site. Key conditions are the structure of the clay and the temper used in the produce of this article under study: temper is a material put into the clay during the initial production level, and it is employed to aid the next drying out process. Types of temper include shell pieces, granite fragments and floor sherd pieces called 'grog'. Temper is identified by microscopic examination of the temper material usually. Clay identification is determined by a process of refiring the ceramic, and assigning a color to it using Munsell Soil Color notation. By estimating both the clay and temper compositions, and locating a region where both are known to occur, an task of the material source can be produced. From the source task of the artifact further investigations can be produced in to the site of production.
EUGENE HŐN : CERAMIC ARTIST: Contemporary art and design In China
Ceramic candleholder, 39;Tree of Life39; by NOVICA. $84.95. Handmade by
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A ceramic is an inorganic, nonmetallic[a] sturdy material comprising metallic, nonmetal or metalloid atoms held in ionic and covalent bonds primarily. The crystallinity of ceramic materials ranges from oriented to semi-crystalline highly, and often completely amorphous (e.g., eyeglasses). Varying crystallinity and electron usage in the ionic and covalent bonds cause most ceramic materials to be good thermal and electro-mechanical insulators (extensively investigated in ceramic engineering). With such a huge range of possible options for the composition/structure of the ceramic (e.g. all of the elements practically, nearly all types of bonding, and all degrees of crystallinity), the breadth of the topic is huge, and identifiable attributes (e.g. hardness, toughness, electrical power conductivity, etc.) are hard to specify for the merged 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 of these rules (e.g. piezoelectric ceramics, a glass transition temps, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon fiber, while made up of ceramic materials, aren't regarded as area of the ceramic family.
The word "ceramic comes from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The initial known reference to the main "ceram-" is the Mycenaean Greek ke-ra-me-we, "staff of ceramics", written in Linear B syllabic script.[5] The term "ceramic" may be used as an adjective to describe a material, process or product, or it might be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".
The initial ceramics created by humans were pottery objects, including 27,000-year-old figurines, made from clay, either alone or mixed with other materials like silica, hardened, sintered, in open fire. Ceramics were glazed and terminated to produce even later, colored surfaces, reducing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, professional and building products, as well as a wide range of ceramic art. In the 20th century, new ceramic materials were developed for use in advanced ceramic executive, such just as semiconductors.
Ceramic artifacts own an important role in archaeology for understanding the culture, habit and technology of individuals of days gone by. They are among the most typical artifacts found at an archaeological site, generally in the form of small fragments of broken pottery called sherds. Processing of accumulated sherds can be regular with two main types of examination: technical and traditional.
Traditional analysis will involve 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 scientific state of the communal people among other conclusions. Furthermore, by looking at stylistic changes of ceramics over time is it possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). An evaluation of ceramic artifacts with known dated assemblages allows for a chronological project of these portions.[13]The technical approach to ceramic analysis involves a finer study of the structure of ceramic artifacts and sherds to look for the source of the material and through this the possible manufacturing site. Key conditions are the structure of the clay and the temper used in the produce of this article under study: temper is a material put into the clay during the initial production level, and it is employed to aid the next drying out process. Types of temper include shell pieces, granite fragments and floor sherd pieces called 'grog'. Temper is identified by microscopic examination of the temper material usually. Clay identification is determined by a process of refiring the ceramic, and assigning a color to it using Munsell Soil Color notation. By estimating both the clay and temper compositions, and locating a region where both are known to occur, an task of the material source can be produced. From the source task of the artifact further investigations can be produced in to the site of production.
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