Columbia Encyclopedia

Search results

500 results found

Eastern Highlands

(Encyclopedia)Eastern Highlands, c.2,400 mi (3,860 km) long, general name for the mountains and plateaus roughly paralleling the east and southeast coasts of Australia (including Tasmania) and forming the Continent...

Cornell, Eric Allin

(Encyclopedia)Cornell, Eric Allin, 1961–, American physicist, b. Palo Alto, Calif., Ph.D. Massachusetts Institute of Technology, 1990. Since 1990, he has been a researcher at the Joint Institute for Laboratory As...

Port Huron

(Encyclopedia)Port Huron hyo͝orˈən [key], city (1990 pop. 33,694), seat of St. Clair co., S Mich., a natural, deepwater port of entry at the junction of the St. Clair River with Lake Huron; inc. 1857. It is a sh...

precipitation, in chemistry

(Encyclopedia)precipitation, in chemistry, a process in which a solid is separated from a suspension, sol, or solution. In a suspension such as sand in water the solid spontaneously precipitates (settles out) on st...

Sable Island, Nova Scotia, Canada

(Encyclopedia)Sable Island, low, sandy island, c.25 mi (40 km) long and 1 mi (1.6 km) wide, off N.S., Canada, ESE of Halifax, near the edge of the continental shelf. The crescent-shaped island is the exposed part o...

resuscitator

(Encyclopedia)resuscitator rĭsŭsˈĭtāˌtər [key], device used to revive a person whose normal breathing has been disrupted. Several types are in wide use. The automatic tank resuscitator consists of a face mas...

pyroclastic flow

(Encyclopedia)pyroclastic flow, turbulent, fluidized mixture of rock, volcanic ash, and hot gas that moves like an avalanche away from a volcanic eruption. A pyroclastic flow may contain a mix of rock fragments ran...

‘Oumuamua

(Encyclopedia)‘Oumuamua ōmo͞oˈəmo͞oˈə [key], officially 1I/2017 U1 (‘Oumuamua), interstellar object, the first to be discovered in the solar system. Highly variable in brightness, it also is highly and u...

Valles Caldera National Preserve

(Encyclopedia)Valles Caldera National Preserve väˈyās [key], 89,766 acres (36,343 hectares), N N.Mex.; est. 2000 by Valles Caldera Trust, transferred to National Park Service 2015. Formerly part of the vast, pri...

Bay City

(Encyclopedia)Bay City. 1 City (2020 pop. 32,661), seat of Bay co., S Mich., a port of entry on the Saginaw River at its mouth on Saginaw Bay (an inlet of Lake ...