Columbia Encyclopedia

Search results

500 results found

turbine

(Encyclopedia) CE5 Types of turbines turbine, rotary engine that uses a continuous stream of fluid (gas or liquid) to turn a shaft that can drive machinery. A water, or hydraulic, turbine is used to drive electr...

Edison, Thomas Alva

(Encyclopedia)Edison, Thomas Alva, 1847–1931, American inventor, b. Milan, Ohio. A genius in the practical application of scientific principles, Edison was one of the greatest and most productive inventors of his...

Baruch, book of the Septuagint and of the Apocrypha

(Encyclopedia)Baruch, early Jewish book included in the Septuagint, but not included in the Hebrew Bible and placed in the Apocrypha in the Authorized Version. It is named for a Jewish prince Baruch (fl. 600 b.c.),...

Trudeau, Pierre Elliott

(Encyclopedia)Trudeau, Pierre Elliott (Joseph Philippe Pierre Ives Elliott Trudeau) tro͞odōˈ [key], 1919–2000, prime minister of Canada (1968–79, 1980–84), b. Montreal. He attended the Univ. of Montreal, H...

Mirabeau, Honoré Gabriel Riquetti, comte de

(Encyclopedia)Mirabeau, Honoré Gabriel Riquetti or Riqueti, comte de ōnôrāˈ gäbrēĕlˈ rēkĕtēˈ kôNt də mēräbōˈ [key], 1749–91, French revolutionary and political leader; son of Victor de Mirabeau...

condensate

(Encyclopedia)condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose their separate ident...

Anti-Corn-Law League

(Encyclopedia)Anti-Corn-Law League, organization formed in 1839 to work for the repeal of the English corn laws. It was an affiliation of groups in various cities and districts with headquarters at Manchester and w...

plate tectonics

(Encyclopedia) CE5 Plate tectonics: Map of the world showing major plates and plate boundaries CE5 Plate tectonics: Schematic model of the oceanic crust, showing the three types of plate boundaries plate tect...

superconductivity

(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...

atmosphere

(Encyclopedia) CE5 Atmosphere atmosphere [Gr.,=sphere of air], the mixture of gases surrounding a celestial body with sufficient gravity to maintain it. Although some details about the atmospheres of other plane...
 

Browse by Subject