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polychlorinated biphenyl

(Encyclopedia)polychlorinated biphenyl or PCB, any of a group of organic compounds originally widely used in industrial processes but later found to be dangerous environmental pollutants. Polychlorinated biphenyl i...

Annecy

(Encyclopedia)Annecy änsēˈ [key], town, capital of Haute-Savoie dept., SE France, in Savoy in the N Alps, on beautiful Lake Annecy. A popular tourist resort, it also has printing pla...

Subiaco

(Encyclopedia)Subiaco so͞obyäˈkō [key], town (1991 pop. 9,004), Latium, central Italy, in the Apennines, at the confluence of the Aniene and the Acquaviva rivers. It is an agricultural, industrial, and tourist ...

optical sensing

(Encyclopedia)optical sensing, in general, any method by which information that occurs as variations in the intensity, or some other property, of light is translated into an electric signal. This is usually accompl...

counterfeiting

(Encyclopedia)counterfeiting, manufacturing spurious coins, paper money, or evidences of governmental obligation (e.g., bonds) in the semblance of the true. There must be sufficient resemblance to the genuine artic...

Paulist Fathers

(Encyclopedia)Paulist Fathers, American society of Roman Catholic priests, officially named the Society of Missionary Priests of St. Paul the Apostle (Latin abbr., C.S.P.). It was founded (1858) by Isaac Hecker, wh...

graphic arts

(Encyclopedia)graphic arts: see aquatint; drawing; drypoint; engraving; etching; illustration; linoleum block printing; lithography; mezzotint; niello; pastel; poster; silk-screen printing; silhouette; silverpoint;...

Five Dynasties and Ten Kingdoms

(Encyclopedia)Five Dynasties and Ten Kingdoms, period of Chinese history between the fall of the T'ang dynasty (a.d. 907) and the establishment of the Sung dynasty (a.d. 960). It is named for the five successive sh...

King of Prussia

(Encyclopedia)King of Prussia, industrialized suburban area (1990 pop. 18,406), Montgomery co., SE Pa. It has glass and steel fabricating, food processing, printing and publishing, and varied manufacturing (textile...

3D printer

(Encyclopedia)3D printer, computerized device that produces a three-dimensional object by creating it as a series of thin layers. The object is created from a model stored in computer-aided design file; the model i...