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German silver

(Encyclopedia)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 p...

solder

(Encyclopedia)solder sŏdˈər [key], metal alloy used in the molten state as a metallic binder. The type of solder to be used is determined by the metals to be united. Soft solders are commonly composed of lead an...

Camborne-Redruth

(Encyclopedia)Camborne-Redruth kămˈbôrn, –bûrn, rĕdˈro͞oth [key], town, Cornwall, SW Engla...

repoussé

(Encyclopedia)repoussé rəpo͞osāˈ [key], the process or the product of ornamenting metallic surfaces with designs in relief hammered out from the back by hand. Gold and silver are most commonly used today for f...

Bangka

(Encyclopedia)Bangka or Banka both: bängˈkä, băngˈkə [key], island, c.4,600 sq mi (11,910 sq ...

alizarin

(Encyclopedia)alizarin əlĭzˈərĭn [key], or 1,2-dihydroxyanthraquinone, mordant vegetable dye obtained originally from the root of the madder plant (Rubia tinctorum), in which it occurs as a glucoside. The term...

Port Harcourt

(Encyclopedia)Port Harcourt härˈkərt, –kôrt [key], city (1991 est. pop. 362,000), SE Nigeria, a deepwater port on the Bonny River in the Niger delta. It is an industrial and commercial center where steel and ...

putty

(Encyclopedia)putty, commonly a mixture of whiting (calcium carbonate) and boiled linseed oil. Other substances may be combined with the oil to make putties suitable for some specific purpose. For example, the red ...

Bronze Age

(Encyclopedia)Bronze Age, period in the development of technology when metals were first used regularly in the manufacture of tools and weapons. Pure copper and bronze, an alloy of copper and tin, were used indiscr...

Kivu, region, Congo

(Encyclopedia)Kivu kēˈvo͞o, kēvo͞oˈ [key], region, c.89,000 sq mi (230,510 sq km), E Congo (Kinshasa). It borders on Uganda, Rwanda, Burundi, and Lake Tanganyika on the east. Kivu is divided into three provin...