Columbia Encyclopedia

Search results

95 results found

calorimetry

(Encyclopedia)calorimetry kălˌərĭmˈətrē [key], measurement of heat and the determination of heat capacity. Heat is evolved in exothermic processes and absorbed in endothermic processes; such processes includ...

Croydon

(Encyclopedia)Croydon, outer borough of Greater London, SE England. It is London's second largest shopping and cultural center after West End. London's first airport,...

Stahl, Georg Ernst

(Encyclopedia)Stahl, Georg Ernst gāˈôrkh ĕrnst shtäl [key], 1660–1734, German physician and chemist. He taught (1694–1716) at the Univ. of Halle, then went to Berlin as court physician. He is known for his...

Stirling engine

(Encyclopedia)Stirling engine, an external combustion reciprocating engine having an enclosed working fluid that is alternately compressed and expanded to operate a piston, thus converting heat from a variety of so...

automobile

(Encyclopedia)CE5 Automobile chassis CE5 Two views of a six-cylinder automobile engine automobile, self-propelled vehicle used for travel on land. The term is commonly applied to a four-wheeled vehicle desig...

carbon black

(Encyclopedia)carbon black, mixture of partially burned hydrocarbons. Carbon black is produced by partial combustion of natural gas. It is used as a black pigment for inks and paints, and is used in large amounts b...

engine

(Encyclopedia)engine: see diesel engine; internal-combustion engine; steam engine; rotary engine; automobile. ...

Berthollet, Claude Louis, Comte

(Encyclopedia)Berthollet, Claude Louis, Comte klōd lwē, kôNt bĕrtōlāˈ [key], 1748–1822, French chemist. His contributions to chemistry include the analysis of ammonia and prussic acid and the discovery of ...

nitric oxide

(Encyclopedia)nitric oxide or nitrogen monoxide, a colorless gas formed by the combustion of nitrogen and oxygen as given by the reaction: energy + N2 + O2 → 2NO; m.p. −163.6℃; b.p. −151.8℃. Nitric oxide ...

Benz, Karl

(Encyclopedia)Benz, Karl bĕnts [key], 1844–1929, German engineer, credited with building the first automobile powered by an internal-combustion engine. The car, driven in Mannheim in 1885 and patented in 1886, h...

Browse by Subject