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Author: langbot
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English[en]
Silver is a chemical element with the symbol Ag (from the Latin argentum, derived from the Proto-Indo-European h2erǵ: "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.[4] The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes alongside gold:[5] while it is more abundant than gold, it is much less abundant as a native metal.[6] Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity, silver has had an enduring role in most human cultures. Other than in currency and as an investment medium (coins and bullion), silver is used in solar panels, water filtration, jewellery, ornaments, high-value tableware and utensils (hence the term "silverware"), in electrical contacts and conductors, in specialized mirrors, window coatings, in catalysis of chemical reactions, as a colorant in stained glass, and in specialized confectionery. Its compounds are used in photographic and X-ray film. Dilute solutions of silver nitrate and other silver compounds are used as disinfectants and microbiocides (oligodynamic effect), added to bandages, wound-dressings, catheters, and other medical instruments.
Cornish[kw]
Elven gymyk yw arghans, niver 47 y'n Vosen Beriodek. Y furvell gymyk yw Ag. An hanow a dheu dhyworth an ger Latin argentum. Henwys yw lies elven dhyworth hanow gwlas, cita po avon, mes dibarow yw arghans - ev re ros y hanow dhe wlas (Arghantina) hag avon (Rio de la Plata - avon arghans yn Spaynek). Nyns eus rann vewoniethel dhe arghans y'n korf denel. Pur wenonek yw dhe is-organedhow. Holanow hedeuth arghans a serr an kroghen. Kymystyon kresosel a wre gwertha arghans nitrat dhe remova gwenogennow. Y sewenas an remedi, hag usys o bys dhe dhalleth an 20ves kansvledhen. Balweyth re beu kowlwrys rag arghans a-dhia 3000 K.O.K. yn Turki ha Pow Grek. Chif moon arghans yw acanthit (arghans sulfid - Ag2S). Kevys yw yn Pow Meksiko, Bolivi ha Hondouras. Mes an brassa rann a arghans yw kevys dhyworth purhe alkenyow erel, kepar ha kober. Askorrans ollvysel yw 25,000 tonnas an vledhen. Usys o arghans rag bathow mes y hwrons gwannhe yn es. Chif devnydhyow arghans yw an diwysyansow tredanek ha elektronek ha devnydh y'n chi avel daffar lymm, gemmweyth ha gwedrow-mires. Poos atomek arghans yw 107.87, y boynt teudhi yw 962°C ha'y boynt bryjyon yw 2212°C. Y dhosedh yw 10.5kg an liter. Alkan medhel yw arghans gans lenter gnasek arghansek.