Columbia Encyclopedia

Search results

500 results found

Timmins

(Encyclopedia)Timmins, town (1991 pop. 47,461), central Ont., Canada, on the Mattagami River. Timmins is the commercial center of the rich Porcupine gold-mining district, where gold was first discovered in 1909. Si...

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...

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...

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. ...

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 ...

Mugodzhar Hills

(Encyclopedia)Mugodzhar Hills mo͞ogəjärˈ [key], range, c.275 mi (440 km) long, E Kazakhstan. The southern spur of the Urals, it forms the divide between the Caspian and the Aral basins. Its highest point is c.2...
 

Browse by Subject