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1988 Ron Gordon Designs Christmas Christmas Tea Pot
A ceramic is an inorganic, nonmetallic[a] sound material comprising metallic, 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). Differing crystallinity and electron consumption in the ionic and covalent bonds cause most ceramic materials to be good thermal and electric powered insulators (thoroughly explored in ceramic engineering). With such a sizable range of possible options for the structure/structure of a ceramic (e.g. almost all of the elements, all types of bonding practically, and all degrees of crystallinity), the breadth of the topic is huge, and identifiable capabilities (e.g. hardness, toughness, electric conductivity, etc.) are hard to identify for the mixed group as a whole. 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, glass transition heat, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon fibers, while filled with ceramic materials, aren't regarded as area of the ceramic family.The term "ceramic comes from the Greek phrase ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The initial known mention of 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 made by humans were pottery things, including 27,000-year-old figurines, created from clay, either alone or mixed with other materials like silica, solidified, sintered, in flame. Ceramics were glazed and fired to make simple later, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include local, professional and building products, as well as an array of ceramic art. In the 20th hundred years, new ceramic materials were developed for use in advanced ceramic executive, such as with semiconductors.Ceramic artifacts produce an important role in archaeology for understanding the culture, technology and behavior of peoples of the past. They can be among the most typical artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of gathered sherds can be regular with two main types of evaluation: specialized and traditional.Traditional analysis will involve sorting ceramic artifacts, sherds and larger fragments into specific types based on style, composition, morphology and manufacturing. By creating these typologies you'll be able to distinguish between different cultural styles, the purpose of the ceramic and technological state of the people among other conclusions. In addition, 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 project of these parts.[13]The technical approach to ceramic analysis entails a finer study of the structure of ceramic artifacts and sherds to determine the source of the materials and through this the possible developing site. Key conditions are the composition of the clay and the temper used in the production of the article under research: temper is a material put into the clay through the initial production level, and it can be used to aid the subsequent drying out process. Types of temper include shell parts, granite fragments and ground sherd items called 'grog'. Temper is determined by microscopic examination of the temper material usually. 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 the temper and clay compositions, and locating an area where both are recognized to occur, an project of the materials source can be made. From the foundation assignment of the artifact further investigations can be produced into the site of make.
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A ceramic is an inorganic, nonmetallic[a] sound material comprising metallic, 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). Differing crystallinity and electron consumption in the ionic and covalent bonds cause most ceramic materials to be good thermal and electric powered insulators (thoroughly explored in ceramic engineering). With such a sizable range of possible options for the structure/structure of a ceramic (e.g. almost all of the elements, all types of bonding practically, and all degrees of crystallinity), the breadth of the topic is huge, and identifiable capabilities (e.g. hardness, toughness, electric conductivity, etc.) are hard to identify for the mixed group as a whole. 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, glass transition heat, superconductive ceramics, etc.). Many composites, such as fiberglass and carbon fibers, while filled with ceramic materials, aren't regarded as area of the ceramic family.
The term "ceramic comes from the Greek phrase ????????? (keramikos), "of pottery" or "for pottery",[3] from ??????? (keramos), "potter's clay, tile, pottery".[4] The initial known mention of 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 made by humans were pottery things, including 27,000-year-old figurines, created from clay, either alone or mixed with other materials like silica, solidified, sintered, in flame. Ceramics were glazed and fired to make simple later, colored surfaces, decreasing porosity through the use of glassy, amorphous ceramic coatings together with the crystalline ceramic substrates.[7] Ceramics now include local, professional and building products, as well as an array of ceramic art. In the 20th hundred years, new ceramic materials were developed for use in advanced ceramic executive, such as with semiconductors.
Ceramic artifacts produce an important role in archaeology for understanding the culture, technology and behavior of peoples of the past. They can be among the most typical artifacts found at an archaeological site, generally by means of small fragments of broken pottery called sherds. Processing of gathered sherds can be regular with two main types of evaluation: specialized and traditional.
Traditional analysis will involve sorting ceramic artifacts, sherds and larger fragments into specific types based on style, composition, morphology and manufacturing. By creating these typologies you'll be able to distinguish between different cultural styles, the purpose of the ceramic and technological state of the people among other conclusions. In addition, 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 project of these parts.[13]The technical approach to ceramic analysis entails a finer study of the structure of ceramic artifacts and sherds to determine the source of the materials and through this the possible developing site. Key conditions are the composition of the clay and the temper used in the production of the article under research: temper is a material put into the clay through the initial production level, and it can be used to aid the subsequent drying out process. Types of temper include shell parts, granite fragments and ground sherd items called 'grog'. Temper is determined by microscopic examination of the temper material usually. 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 the temper and clay compositions, and locating an area where both are recognized to occur, an project of the materials source can be made. From the foundation assignment of the artifact further investigations can be produced into the site of make.
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