Research topic: German silver

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German silver. (Image by Stahlkocher, GFDL)

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German silver

The Columbia Encyclopedia, Sixth Edition
German silver name for various alloys of copper, zinc, and nickel, sometimes also containing lead and tin. They were originally named for their silver-white color, but use of the term silver is now prohibited for alloys not containing that metal. German silver varies in composition, the percentage of the three elements ranging approximately as follows: copper, from 50% to 61.6%; zinc, from 19% to 17.2%; nickel, from 30% to 21.1%. The proportions are always specified in commercial alloys. German silver is extensively used because of its hardness, toughness, and resistance to corrosion for... Read more
silverwork
...ornaments of c.2000 BC; and silver vases and the inlays on bronze...reuse and thus lost. Early German Renaissance silverwork is...numerous Italian artisans. German characteristics prevail in...in the 15th cent. Spanish silver of the 16th cent. carries...17th- and 18th-century Dutch silver ... Read more
Tollens reagent
...testing for aldehydes, named after German chemist B. C. G. Tollens (1841...by adding sodium hydroxide to silver nitrate to give silver(I) oxide, which is dissolved in...the complex Ag + ion to metallic silver, forming a bright silver mirror... Read more

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