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Tati

(Encyclopedia)Tati täˈtē [key], region, c.2,070 sq mi (5,360 sq km), NE Botswana. Nickel, copper, and manganese are mined in the region. Tati was a source of gold for centuries; mining ceased there in the early ...

fiber optics

(Encyclopedia)fiber optics, transmission of digitized messages or information by light pulses along hair-thin glass or plastic fibers. Each fiber is surrounded by a cladding having a high index of refractance so th...

Luanshya

(Encyclopedia)Luanshya lwänshˈyä [key], city (1990 pop. 146,275), N central Zambia, near the Congo border. It is a copper-mining center, located on the Copperbelt. ...

Marinduque

(Encyclopedia)Marinduque märēndo͞oˈkā [key], province (1990 pop. 185,524), the Philippines, between Mindoro and S Luzon. It includes Marinduque Island and 24 other islands. Iron, gold, silver, and copper are m...

Røros

(Encyclopedia)Røros röˈrōs [key], town (1995 est. pop. 5,400), Sør-Trøndelag co., E Norway, near the Swedish border. It is a tourist spot and a winter sports center. The copper mines in the vicinity, opened i...

Tokat

(Encyclopedia)Tokat tōkätˈ [key], city (1990 pop. 83,174), capital of Tokat prov., N central Turkey. It is an agricultural market with copper manufactures. An important town in Roman times, it declined under the...

pipe

(Encyclopedia)pipe, hollow structure, usually cylindrical, for conducting materials. It is used primarily to convey liquids, gases, or solids suspended in a liquid, e.g., a slurry. It is also used as a conduit for ...

Mufulira

(Encyclopedia)Mufulira mo͞ofo͞olēˈrä [key], city (1990 pop. 152,944), N central Zambia, on the border with the Congo. It is a copper-mining center, located in the Copperbelt. ...

Alice Springs

(Encyclopedia)Alice Springs, town, Northern Territory, Australia. It lies in a pastoral area surrounded by desert near the center of the continent and is a stop on the Adelaide Darwin Railway. The town ...

Loa

(Encyclopedia)Loa lōˈä [key], longest river of Chile, 275 mi (443 km) long, flowing S from the Andes, N Chile, then W and N through the Atacama Desert, before turning W to the Pacific Ocean. It is not navigable ...