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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...

Olympia, city, United States

(Encyclopedia)Olympia, city (1990 pop. 33,840), state capital, and seat of Thurston co., W Wash., at the southern tip of Puget Sound, on Budd Inlet; inc. 1859. A port of entry, it ships lumber products and agricult...

Huntington

(Encyclopedia)Huntington. 1 City (2020 pop. 17,022), seat of Huntington co., NE Ind.; inc. 1848. It is a farm trade center and an industrial city. Manufactures ...

Durham, city, United States

(Encyclopedia)Durham dûrˈăm [key], city (2020 pop. 324,833), seat of Durham co., N central N.C., in the ...

Kao, Sir Charles Kuen

(Encyclopedia)Kao, Sir Charles Kuen, 1933–2018, British-American physicist, b. Shanghai, China, Ph.D. Imperial College London, 1965. Kao was an engineer and researcher at Standard Telecommunications Laboratories ...

South Bend

(Encyclopedia)South Bend, city (1990 pop. 105,511), seat of St. Joseph co., N Ind., on the great south bend of the St. Joseph River, in a farming and mint-growing region; inc. as a city 1865. An industrial city, it...

button

(Encyclopedia)button, knoblike appendage used on wearing apparel either for ornament or for fastening. Although buttons were sometimes used as fasteners by Greeks and Romans, they were more often merely ornamental ...

waterfowl

(Encyclopedia)waterfowl, common term for members of the order Anseriformes, wild, aquatic, typically freshwater birds including ducks, geese, and screamers. In Great Britain the term is also used to designate speci...

Castagno, Andrea del

(Encyclopedia)Castagno, Andrea del ändrĕˈä dĕl kästäˈnyō [key], c.1423–1457, major Florentine painter of the early Renaissance. His first recorded painting (1440; now destroyed), effigies of hanged men, ...

casting

(Encyclopedia)casting or founding, shaping of metal by melting and pouring into a mold. Most castings, especially large ones, are made in sand molds. Sand, mixed with a binder to hold it together, is pressed around...