Alloy+of+copper

  • 81 Chinese coins — Ancient Chinese coins were produced continuously for around 2,500 years by casting in moulds, rather than being struck with dies as with most western coins.Collectors can obtain affordable yet old, beautiful, and interesting coins associated with …

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  • 82 crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… …

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  • 83 Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… …

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  • 84 Ancient Chinese coinage — Ancient Chinese coins Chinese coins were produced continuously for around 2,500 years by casting in moulds, rather than being struck with dies as with most western coins. Contents 1 …

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  • 85 zinc processing — Introduction       preparation of the ore for use in various products.       Zinc (Zn) is a metallic element of hexagonal close packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre. It has only moderate hardness and can …

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  • 86 Bit mouthpiece — This article is about the part of a bit that goes into the mouth of a horse. For an overview of bits in general, see Bit (horse). For types of bridles, see Bridle. Single jointed pelham. The mouthpiece is the part of a horse s bit that goes into… …

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  • 87 Cymbal alloys — Cymbals are made from four main alloys, all of them copper based. These are: bell bronze, malleable bronze, brass and nickel silver. Contents 1 Bell bronze 2 Malleable bronze 3 Brass 4 Nickel silver …

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  • 88 Sterling silver — is an alloy of silver containing 92.5% pure silver and 7.5% other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925. Fine silver (99.9% pure) is generally too soft for producing large functional… …

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  • 89 Architectural metals — used in buildings and structures are comprised of several distinctive metallic materials. Metals serve a wide variety of uses in the built landscape, including structural features, such as nails and trusses, as well as decorative features, such… …

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  • 90 Corinthian bronze — Corinthian bronze, also called Corinthian brass or æs Corinthiacum, was a highly valuable metal alloy in classical antiquity. It is thought to be an alloy of copper with gold or silver (or both), although it has also been contended that it was… …

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  • 91 metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …

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  • 92 Orichalcum — is a metal mentioned in several ancient writings, most notably the story of Atlantis as recounted in the Critias dialogue, recorded by Plato. According to Critias, orichalcum was considered second only to gold in value, and was found and mined in …

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  • 93 technology, history of — Introduction       the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …

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  • 94 Meinl Percussion — For people and other organisations with the name Meinl, see Meinl (disambiguation). Roland Meinl Percussion is a leading manufacturer of cymbals and other percussion instruments, based in Gutenstetten, Germany. Their main brand is Meinl. Founded… …

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  • 95 platinum group — ▪ chemical element group Introduction       six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …

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  • 96 Rokushō — is a traditional Japanese compound for inducing patination in decorative non ferrous metals, especially several alloys which are nearly unknown outside Japan. Shakudō, an alloy of copper and gold, becomes dark blue violet; shibuichi, an alloy of… …

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  • 97 ormolu — /awr meuh looh /, n. 1. Also called mosaic gold. an alloy of copper and zinc used to imitate gold. 2. Also called bronze doré, gilt bronze. gilded metal, esp. cast brass or bronze gilded over fire with an amalgam of gold and mercury, used for… …

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  • 98 Papal mint — The Papal Mint is the pope s institute for the production of hard cash. Papal Mint also refers to the buildings in Avignon, Rome, and elsewhere that used to house the mint. (The Italian word for mint is Zecca). Contents 1 History of Papal coin 2… …

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  • 99 Metalworking — Machining a bar of metal on a lathe. Metalworking is the process of working with metals to create individual parts, assemblies, or large scale structures. The term covers a wide range of work from large ships and bridges to precise engine parts… …

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  • 100 pot metal — noun 1. cast iron used for making cooking wares • Hypernyms: ↑cast iron 2. an alloy of copper and lead used especially for making large pots • Hypernyms: ↑alloy, ↑metal * * * noun 1 …

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