Columbia Encyclopedia

Search results

500 results found

Kisangani

(Encyclopedia)Kisangani kēsangäˈnē [key], formerly Stanleyville, city (1996 est. pop. 500,000), capital of Tshopo prov., N central Congo (Kinshasa), a port on the Congo River. The city is the terminus of steame...

robotics

(Encyclopedia)robotics, science and technology of general purpose, programmable machine systems. Contrary to the popular fiction image of robots as ambulatory machines of human appearance capable of performing almo...

Plimsoll, Samuel

(Encyclopedia)Plimsoll, Samuel plĭmˈsəl [key], 1824–98, English reformer. Plimsoll was particularly interested in the welfare of sailors. As a member of Parliament (1868–80) he secured legislation limiting t...

Zeeman effect

(Encyclopedia)Zeeman effect, splitting of a single spectral line (see spectrum) into a group of closely spaced lines when the substance producing the single line is subjected to a uniform magnetic field. The effect...

Girard

(Encyclopedia)Girard jĭrärdˈ [key], city (2020 pop. 9,081), Trumbull co., NE Ohio, adjacent to Youngstow...

geochemistry

(Encyclopedia)geochemistry, study of the chemical changes on the earth. More specifically, it is the study of the absolute and relative abundances of chemical elements in the minerals, soils, ores, rocks, water, an...

Whitby, Synod of

(Encyclopedia)Whitby, Synod of, called by King Oswy of Northumbria in 663 at Whitby, England. Its purpose was to choose between the usages of the Celtic and Roman churches, primarily in the matter of reckoning the ...

onomatopoeia

(Encyclopedia)onomatopoeia ŏnˌəmătˌəpēˈə [key] [Gr.,=word-making], in language, the representation of a sound by an imitation thereof; e.g., the cat mews. Poets often convey the meaning of a verse through ...

bicycle racing

(Encyclopedia)bicycle racing or cycling, an internationally popular sport conducted on closed courses or the open road. Track racing takes place at a velodrome, usually a banked 1,093.6 ft (.333 km) oval. Olympic m...

Jeannette

(Encyclopedia)Jeannette jənĕtˈ [key], city (1990 pop. 11,221), Westmoreland co., SW Pa., a suburb of Pittsburgh; laid out 1888, inc. as a city 1937. Located in a coal and natural gas area, Jeannette produces mac...