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CT Assistant High School Principals of the Year Westport, CT Patch
A ceramic can be an inorganic, nonmetallic[a] solid material comprising metal, nonmetal or metalloid atoms mostly held in ionic and covalent bonds. The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, and often completely amorphous (e.g., eyeglasses). Differing crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electronic insulators (thoroughly investigated in ceramic executive). With such a big range of possible options for the composition/structure of any ceramic (e.g. almost all of the elements, all sorts of bonding almost, and all levels of crystallinity), the breadth of the topic is huge, and identifiable capabilities (e.g. hardness, toughness, electric powered conductivity, etc.) are hard to identify for the group as a whole. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility are the norm,[1] with known exceptions to each one of these rules (e.g. piezoelectric ceramics, glass transition temperatures, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon dietary fiber, while containing ceramic materials, aren't regarded as area of the ceramic family.The indicated phrase "ceramic originates from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known reference to the root "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 spell it out a material, process or product, or it could be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".The initial ceramics made by humans were pottery items, including 27,000-year-old figurines, created from clay, either by itself or blended with other materials like silica, solidified, sintered, in flames. Later ceramics were glazed and fired to create easy, colored surfaces, reducing porosity by using glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, commercial and building products, as well as an array of ceramic art. In the 20th century, new ceramic materials were developed for use in advanced ceramic anatomist, such as with semiconductors.Ceramic artifacts produce an important role in archaeology for understanding the culture, behavior and technology of individuals of the past. These are among the most frequent artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Control of collected sherds can be consistent with two main types of research: complex and traditional.Traditional analysis will involve sorting ceramic artifacts, sherds and larger fragments into specific types predicated on style, composition, manufacturing and morphology. By creating these typologies you'll be able to distinguish between different cultural styles, the purpose of the ceramic and technological state of people among other conclusions. Furthermore, by looking at stylistic changes of ceramics as time passes is it possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). A comparison of ceramic artifacts with known dated assemblages permits a chronological assignment of these parts.[13]The technical method of ceramic analysis will involve a finer study of the composition of ceramic artifacts and sherds to look for the source of the material and through this the possible manufacturing site. Key requirements are the composition of the clay and the temper found in the manufacture of the article under study: temper is a material put into the clay during the initial production level, and it can be used to aid the subsequent drying out process. Types of temper include shell pieces, granite fragments and ground sherd parts called 'grog'. Temper is recognized 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 recognized to occur, an project of the materials source can be produced. From the source task of the artifact further investigations can be made into the site of produce.
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A ceramic can be an inorganic, nonmetallic[a] solid material comprising metal, nonmetal or metalloid atoms mostly held in ionic and covalent bonds. The crystallinity of ceramic materials ranges from highly oriented to semi-crystalline, and often completely amorphous (e.g., eyeglasses). Differing crystallinity and electron use in the ionic and covalent bonds cause most ceramic materials to be good thermal and electronic insulators (thoroughly investigated in ceramic executive). With such a big range of possible options for the composition/structure of any ceramic (e.g. almost all of the elements, all sorts of bonding almost, and all levels of crystallinity), the breadth of the topic is huge, and identifiable capabilities (e.g. hardness, toughness, electric powered conductivity, etc.) are hard to identify for the group as a whole. General properties such as high melting temperature, high hardness, poor conductivity, high moduli of elasticity, chemical resistance and low ductility are the norm,[1] with known exceptions to each one of these rules (e.g. piezoelectric ceramics, glass transition temperatures, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon dietary fiber, while containing ceramic materials, aren't regarded as area of the ceramic family.
The indicated phrase "ceramic originates from the Greek word ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The earliest known reference to the root "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 spell it out a material, process or product, or it could be used as a noun, either singular, or, more commonly, as the plural noun "ceramics".
The initial ceramics made by humans were pottery items, including 27,000-year-old figurines, created from clay, either by itself or blended with other materials like silica, solidified, sintered, in flames. Later ceramics were glazed and fired to create easy, colored surfaces, reducing porosity by using glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include domestic, commercial and building products, as well as an array of ceramic art. In the 20th century, new ceramic materials were developed for use in advanced ceramic anatomist, such as with semiconductors.
Ceramic artifacts produce an important role in archaeology for understanding the culture, behavior and technology of individuals of the past. These are among the most frequent artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Control of collected sherds can be consistent with two main types of research: complex and traditional.
Traditional analysis will involve sorting ceramic artifacts, sherds and larger fragments into specific types predicated on style, composition, manufacturing and morphology. By creating these typologies you'll be able to distinguish between different cultural styles, the purpose of the ceramic and technological state of people among other conclusions. Furthermore, by looking at stylistic changes of ceramics as time passes is it possible to separate (seriate) the ceramics into distinct diagnostic groups (assemblages). A comparison of ceramic artifacts with known dated assemblages permits a chronological assignment of these parts.[13]The technical method of ceramic analysis will involve a finer study of the composition of ceramic artifacts and sherds to look for the source of the material and through this the possible manufacturing site. Key requirements are the composition of the clay and the temper found in the manufacture of the article under study: temper is a material put into the clay during the initial production level, and it can be used to aid the subsequent drying out process. Types of temper include shell pieces, granite fragments and ground sherd parts called 'grog'. Temper is recognized 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 recognized to occur, an project of the materials source can be produced. From the source task of the artifact further investigations can be made into the site of produce.
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