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Pewter
Pewter () is a malleable metal alloy consisting of tin (85–99%), antimony (approximately 5–10%), copper (2%), bismuth, and sometimes silver. In the past, it was an alloy of tin and lead, but most modern pewter, in order to prevent lead poisoning, is not made with lead. Pewter has a low melting point, around , depending on the exact mixture of metals. The word ''pewter'' is possibly a variation of " spelter", a term for zinc alloys (originally a colloquial name for zinc). History Pewter was first used around the beginning of the Bronze Age in the Near East. The earliest known piece of pewter was found in an Egyptian tomb, , but it is unlikely that this was the first use of the material. Pewter was used for decorative metal items and tableware in ancient times by the Egyptians and later the Romans, and came into extensive use in Europe from the Middle Ages [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Figure Skating Championships
The U.S. Figure Skating Championships are an annual figure skating competition organized by U.S. Figure Skating to crown the national champions of the United States. The first U.S. Championships were held in 1914 in New Haven, Connecticut, and featured the men's, women's, and pairs events. They have been held without interruption since 1920. Ice dance was added as an event in 1936. Skaters may qualify for the national championships by competing at either the Pacific Coast Sectional Finals, Eastern Sectional Finals, Midwestern Sectional Finals, U.S. Ice Dance Finals, or U.S. Pairs Finals. Medals are awarded in men's singles, women's singles, pair skating, and ice dance at the senior and junior levels. The results of the competition are among the criteria used to determine the American teams to the World Championships, World Junior Championships, Four Continents Championships, and Winter Olympics. Roger Turner currently holds the record for winning the most U.S. cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tankard
A tankard is a form of drinkware consisting of a large, roughly cylindrical, drinking cup with a single handle. In recent centuries tankards were typically made of silver or pewter, but can be made of other materials, for example glass, wood, pottery, or boiled leather. A tankard may have a hinged lid, and tankards featuring glass bottoms are also fairly common. Beer steins are a similar shape and use. Wooden tankards The word "tankard" originally meant any wooden vessel (13th century) and later came to mean a drinking vessel. The earliest tankards were made of wooden staves, similar to a barrel, and did not have lids. A 2000-year-old wooden tankard of approximately four-pint capacity has been unearthed in Wales. A late medieval example of a fine tankard milled from alder wood was recovered by underwater archaeologists excavating the wreck of the royal Danish-Norwegian flagship, '' Gribshunden'' which sank in 1495. When excavated, the tankard's lid was still securely in pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alloy
An alloy is a mixture of chemical elements of which in most cases at least one is a metal, metallic element, although it is also sometimes used for mixtures of elements; herein only metallic alloys are described. Metallic alloys often have properties that differ from those of the pure elements from which they are made. The vast majority of metals used for commercial purposes are alloyed to improve their properties or behavior, such as increased strength, hardness or corrosion resistance. Metals may also be alloyed to reduce their overall cost, for instance alloys of gold and Copper(II) sulfate, copper. A typical example of an alloy is SAE 304 stainless steel, 304 grade stainless steel which is commonly used for kitchen utensils, pans, knives and forks. Sometime also known as 18/8, it as an alloy consisting broadly of 74% iron, 18% chromium and 8% nickel. The chromium and nickel alloying elements add strength and hardness to the majority iron element, but their main function is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal
A metal () is a material that, when polished or fractured, shows a lustrous appearance, and conducts electrical resistivity and conductivity, electricity and thermal conductivity, heat relatively well. These properties are all associated with having electrons available at the Fermi level, as against nonmetallic materials which do not. Metals are typically ductile (can be drawn into a wire) and malleable (can be shaped via hammering or pressing). A metal may be a chemical element such as iron; an alloy such as stainless steel; or a molecular compound such as polythiazyl, polymeric sulfur nitride. The general science of metals is called metallurgy, a subtopic of materials science; aspects of the electronic and thermal properties are also within the scope of condensed matter physics and solid-state chemistry, it is a multidisciplinary topic. In colloquial use materials such as steel alloys are referred to as metals, while others such as polymers, wood or ceramics are nonmetallic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antimony
Antimony is a chemical element; it has chemical symbol, symbol Sb () and atomic number 51. A lustrous grey metal or metalloid, it is found in nature mainly as the sulfide mineral stibnite (). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name Kohl (cosmetics), kohl. The earliest known description of this metalloid in the West was written in 1540 by Vannoccio Biringuccio. China is the largest producer of antimony and its compounds, with most production coming from the Xikuangshan Mine in Hunan. The industrial methods for refining antimony from stibnite are Roasting (metallurgy), roasting followed by carbothermic reaction, reduction with carbon, or direct reduction of stibnite with iron. The most common applications for metallic antimony are in alloys with lead and tin, which have improved properties for solders, Bullet, bullets, and plain bearings. It improves the rigidity of lead-alloy pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Porringer
A porringer is a shallow bowl, between 100 and 150 mm (4–6 inches) in diameter, and 38 to 76 mm (–3 inches) deep; the form originated in the medieval period in Europe and was made in wood, ceramic, pewter, cast iron and silver. They had flat, horizontal handles. The precise purpose of porringers, or écuelles, as they are known in France, is in dispute; but it is thought that they were used to hold broth or gruel. Colonial porringers tended to have one handle, whereas European ones tended to have two handles on opposite sides, on which the owner's initials were sometimes engraved, and they occasionally came with a lid. Porringers resembled the smaller quaich, a Scottish drinking vessel. One can discern authentic pewter porringers in much the same way that silver can be authenticated from the touch marks that were stamped either into the bowl of the porringer or on its base. Wooden porringers are occasionally found from excavations, e.g., 16th-century example from Southwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beer Stein
A beer stein ( ), or simply stein, is either a traditional beer mug made out of stoneware or specifically an ornamental beer mug sold as a souvenir or collectible. An 1894 article on beer mugs in the American Vogue (magazine), ''Vogue'' magazine that describes various types of steins stated: "And it is to this [i.e. German] nation that we owe Richard Wagner, Wagner's music and the apotheosis of the beer mug." Such steins may be made out of stoneware, pewter, porcelain or even silver, wood or crystal glass; they may have open tops or hinged pewter lids with a thumb-lever. Steins usually come in sizes of a half litre or a full litre (or comparable historic sizes). Like decorative tankards, they are often decorated in a nostalgic manner with allusions to Germany. Etymology The English word is attested from 1855. It is borrowed from German language, German ', which has – aside from its prevailing meaning "stone" – elder regional meanings "beer mug" and "beer measure of 1 litre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fashion
Fashion is a term used interchangeably to describe the creation of clothing, footwear, Fashion accessory, accessories, cosmetics, and jewellery of different cultural aesthetics and their mix and match into Clothing, outfits that depict distinctive ways of dressing (Style (visual arts), styles and trends) as signifiers of social status, Self-expression values, self-expression, and group belonging. As a multifaceted term, fashion describes an Clothing industry, industry, fashion design, designs, Aesthetics (textile), aesthetics, and trends. The term 'fashion' originates from the Latin word 'Facere,' which means 'to make,' and describes the manufacturing, mixing, and wearing of outfits adorned with specific cultural aesthetics, patterns, motif (textile arts), motifs, shapes, and cuts, allowing people to showcase their group belongings, values, meanings, beliefs, and ways of life. Given the rise in mass production of Commodity, commodities and clothing at lower prices and global rea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electroplating
Electroplating, also known as electrochemical deposition or electrodeposition, is a process for producing a metal coating on a solid substrate through the redox, reduction of cations of that metal by means of a direct current, direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution (chemistry), solution of a salt (chemistry), salt whose cation is the metal to be coated, and the anode (positive electrode) is usually either a block of that metal, or of some inert electrical conductor, conductive material. The current is provided by an external power supply. Electroplating is widely used in industry and decorative arts to improve the surface qualities of objects—such as resistance to abrasion (mechanical), abrasion and corrosion, lubrication, lubricity, reflectivity, electrical conductivity, or appearance. It is used to build up thickness on undersized or worn-out parts and to manufacture metal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead Poisoning
Lead poisoning, also known as plumbism and saturnism, is a type of metal poisoning caused by lead in the body. Symptoms may include abdominal pain, constipation, headaches, irritability, memory problems, infertility, numbness and paresthesia, tingling in the hands and feet. It causes almost 10% of intellectual disability of otherwise unknown cause and can result in behavioral problems. Some of the effects are permanent. In severe cases, anemia, seizures, coma, or death may occur. Exposure to lead can occur by contaminated air, water, dust, food, or consumer products. Lead poisoning poses a significantly increased risk to children and pets as they are far more likely to ingest lead indirectly by chewing on toys or other objects that are coated in lead paint. Additionally, children absorb greater quantities of lead from ingested sources than adults. Exposure at work is a common cause of lead poisoning in adults with certain occupations at particular risk. Diagnosis is typically b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redox
Redox ( , , reduction–oxidation or oxidation–reduction) is a type of chemical reaction in which the oxidation states of the reactants change. Oxidation is the loss of electrons or an increase in the oxidation state, while reduction is the gain of electrons or a decrease in the oxidation state. The oxidation and reduction processes occur simultaneously in the chemical reaction. There are two classes of redox reactions: * Electron transfer, Electron-transfer – Only one (usually) electron flows from the atom, ion, or molecule being oxidized to the atom, ion, or molecule that is reduced. This type of redox reaction is often discussed in terms of redox couples and electrode potentials. * Atom transfer – An atom transfers from one Substrate (chemistry), substrate to another. For example, in the rusting of iron, the oxidation state of iron atoms increases as the iron converts to an oxide, and simultaneously, the oxidation state of oxygen decreases as it accepts electrons r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
