|
Saggar Fired Pottery
A saggar (also misspelled as sagger or segger) is a type of kiln furniture. It is a ceramic boxlike container used in the firing of pottery to enclose or protect ware being fired inside a kiln. Traditionally, saggars were made primarily from fireclay. Saggars have been used to protect, or safeguard, ware from open flame, smoke, gases and kiln debris: the name may be a contraction of the word ''safeguard''. Their use is widespread, including in China, Korea, Japan and the United Kingdom. Saggars are still used in the production of ceramics to shield ware from the direct contact of flames and from damage by kiln debris. Modern saggars are made of alumina ceramic, cordierite ceramic, mullite ceramic silicon carbide and in special cases from zirconia. Use of Saggars in Ming porcelain Saggars were used to protect the precious imperial porcelain wares created at Jingdezhen from the flames of the kiln, and keep them from fusing to one another. The creation of saggars in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Potteries
The Staffordshire Potteries is the industrial area encompassing the six towns Burslem, Fenton, Hanley, Longton, Stoke and Tunstall, which is now the city of Stoke-on-Trent in Staffordshire, England. North Staffordshire became a centre of ceramic production in the early 17th century, Fleming, John & Hugh Honour. (1977) ''The Penguin Dictionary of Decorative Arts. '' London: Allen Lane, p. 752. due to the local availability of clay, salt, lead and coal. Spread Hundreds of companies produced all kinds of pottery, from tablewares and decorative pieces to industrial items. The main pottery types of earthenware, stoneware and porcelain were all made in large quantities, and the Staffordshire industry was a major innovator in developing new varieties of ceramic bodies such as bone china and jasperware, as well as pioneering transfer printing and other glazing and decorating techniques. In general Staffordshire was strongest in the middle and low price ranges, though the finest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxide
An oxide () is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula. "Oxide" itself is the dianion of oxygen, an O2– (molecular) ion. with oxygen in the oxidation state of −2. Most of the Earth's crust consists of oxides. Even materials considered pure elements often develop an oxide coating. For example, aluminium foil develops a thin skin of Al2O3 (called a passivation layer) that protects the foil from further corrosion.Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. . Stoichiometry (the measurable relationship between reactants and chemical equations of a equation or reaction) Oxides are extraordinarily diverse in terms of stoichiometries and in terms of the structures of each stoichiometry. Most elements form oxides of more than one stoichiometry. A well known example is carbon monoxide and carbon dioxide.Greenwood, N. N.; & Earnshaw, A. (1997). Chemist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt (chemistry)
In chemistry, a salt is a chemical compound consisting of an ionic assembly of positively charged cations and negatively charged anions, which results in a compound with no net electric charge. A common example is table salt, with positively charged sodium ions and negatively charged chloride ions. The component ions in a salt compound can be either inorganic, such as chloride (Cl−), or organic, such as acetate (). Each ion can be either monatomic, such as fluoride (F−), or polyatomic, such as sulfate (). Types of salt Salts can be classified in a variety of ways. Salts that produce hydroxide ions when dissolved in water are called ''alkali salts'' and salts that produce hydrogen ions when dissolved in water are called ''acid salts''. ''Neutral salts'' are those salts that are neither acidic nor basic. Zwitterions contain an anionic and a cationic centre in the same molecule, but are not considered salts. Examples of zwitterions are amino acids, many metabolites, peptides, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Studio Pottery
Studio pottery is pottery made by professional and amateur artists or artisans working alone or in small groups, making unique items or short runs. Typically, all stages of manufacture are carried out by the artists themselves.Emmanuel Cooper, ''Ten Thousand Years of Pottery''. British Museum Press, 2000. . Studio pottery includes functional wares such as tableware and cookware, and non-functional wares such as sculpture, with vases and bowls covering the middle ground, often being used only for display. Studio potters can be referred to as ceramic artists, ceramists, ceramicists or as an artist who uses clay as a medium. In Britain since the 1980s, there has been a distinct trend away from functional pottery, for example, the work of artist Grayson Perry. Some studio potters now prefer to call themselves ceramic artists, ceramists or simply artists. Studio pottery is represented by potters all over the world and has strong roots in Britain. Art pottery is a related term, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
What's My Line?
''What's My Line?'' is a panel game show that originally ran in the United States on the CBS Television Network from 1950 to 1967, originally in black and white and later in color, with subsequent U.S. revivals. The game uses celebrity panelists to question contestants in order to determine their occupation, i.e. their "line of work". The majority of the contestants were from the general public. However, there was one weekly celebrity "mystery guest" for which the panelists were blindfolded. It is on the list of longest-running U.S. primetime network television game-shows. Originally moderated by John Charles Daly and most frequently with regular panelists Dorothy Kilgallen, Arlene Francis, and Bennett Cerf, ''What's My Line?'' won three Emmy Awards for "Best Quiz or Audience Participation Show" in 1952, 1953, and 1958 and the Golden Globe Awards for Best TV Show in 1962. Some nostalgia writers have used the adjective ''live'' to describe the series as it existed for 17 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muffle Furnace
A muffle furnace or muffle oven (sometimes retort furnace in historical usage) is a furnace in which the subject material is isolated from the fuel and all of the products of combustion, including gases and flying ash. After the development of high-temperature heating elements and widespread electrification in developed countries, new muffle furnaces quickly moved to electric designs. Modern furnace Today, a muffle furnace is often a front-loading box-type oven or kiln for high-temperature applications such as fusing glass, creating enamel coatings, ceramics and soldering and brazing articles. They are also used in many research facilities, for example by chemists in order to determine what proportion of a sample is non-combustible and non-volatile (i.e., ash). Some models incorporate programmable digital controllers, allowing automatic execution of ramping, soaking, and sintering steps. Also, advances in materials for heating elements, such as molybdenum disilicide, can now p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glossary Of Pottery Terms
This is a list of pottery and ceramic terms. :''Definitions in Wiktionary are noted as "(W)".'' A B C D E F G H I J K L M O P :Published definitions of Pottery include: :-- "All fired ceramic wares that contain clay when formed, except technical, structural, and refractory products." :-- "China, earthenware and any article made from clay or from a mixture containing clay and other materials." :-- "A class of ceramic artifacts in which clay is formed into containers by hand or in molds or with a potter's wheel, often decorated, and fired" :-- "The term pottery includes many varieties of ware from the crudest vessels of prehist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceramic Glaze
Ceramic glaze is an impervious layer or coating of a vitreous substance which has been fused to a pottery body through firing. Glaze can serve to color, decorate or waterproof an item. Glazing renders earthenware vessels suitable for holding liquids, sealing the inherent porosity of unglazed biscuit earthenware. It also gives a tougher surface. Glaze is also used on stoneware and porcelain. In addition to their functionality, glazes can form a variety of surface finishes, including degrees of glossy or matte finish and color. Glazes may also enhance the underlying design or texture either unmodified or inscribed, carved or painted. Most pottery produced in recent centuries has been glazed, other than pieces in unglazed biscuit porcelain, terracotta, or some other types. Tiles are almost always glazed on the surface face, and modern architectural terracotta is very often glazed. Glazed brick is also common. Domestic sanitary ware is invariably glazed, as are many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Piece-work
Piece work (or piecework) is any type of employment in which a worker is paid a fixed piece rate for each unit produced or action performed, regardless of time. Context When paying a worker, employers can use various methods and combinations of methods. Some of the most prevalent methods are: paid a wage by the hour (known as "time work"); paid an annual salary; salary plus commission (common in sales jobs); base salary or hourly wages plus gratuities (common in service industries); salary plus a possible bonus (used for some managerial or executive positions); salary plus stock options (used for some executives and in start-ups and some high tech firms); salary pool systems; gainsharing (also known as "profit sharing"); paid by the piece – the number of things they make, or tasks they complete (known as ‘output work’); or paid in other ways (known as ‘unmeasured work’). Some industries where piece rate pay jobs are common are agricultural work, cable installation, ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apprentice
Apprenticeship is a system for training a new generation of practitioners of a trade or profession with on-the-job training and often some accompanying study (classroom work and reading). Apprenticeships can also enable practitioners to gain a license to practice in a regulated occupation. Most of their training is done while working for an employer who helps the apprentices learn their trade or profession, in exchange for their continued labor for an agreed period after they have achieved measurable competencies. Apprenticeship lengths vary significantly across sectors, professions, roles and cultures. In some cases, people who successfully complete an apprenticeship can reach the "journeyman" or professional certification level of competence. In other cases, they can be offered a permanent job at the company that provided the placement. Although the formal boundaries and terminology of the apprentice/journeyman/master system often do not extend outside guilds and trade unions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glost Firing
Ceramic glaze is an impervious layer or coating of a vitreous substance which has been fused to a pottery body through firing. Glaze can serve to color, decorate or waterproof an item. Glazing renders earthenware vessels suitable for holding liquids, sealing the inherent porosity of unglazed biscuit earthenware. It also gives a tougher surface. Glaze is also used on stoneware and porcelain. In addition to their functionality, glazes can form a variety of surface finishes, including degrees of glossy or matte finish and color. Glazes may also enhance the underlying design or texture either unmodified or inscribed, carved or painted. Most pottery produced in recent centuries has been glazed, other than pieces in unglazed biscuit porcelain, terracotta, or some other types. Tiles are almost always glazed on the surface face, and modern architectural terracotta is very often glazed. Glazed brick is also common. Domestic sanitary ware is invariably glazed, as are many ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
