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Pontoise

(Encyclopedia)Pontoise pôNtwäzˈ [key], city (1990 pop. 28,463), capital of Val-d'Oise dept., N central France. It is the site of a technical school. The metallurgy and chemical industries are important. A “new...

sodium hydroxide

(Encyclopedia)sodium hydroxide, chemical compound, NaOH, a white crystalline substance that readily absorbs carbon dioxide and moisture from the air. It is very soluble in water, alcohol, and glycerin. It is a caus...

C, letter of the alphabet

(Encyclopedia)C, third letter of the alphabet. In position and form, but not in meaning, it corresponds to Greek gamma (see G). In English it is pronounced variously, e.g., in can, cent, church, and loch. In musica...

rare earths

(Encyclopedia)rare earths, in chemistry, oxides of the rare-earth metals. They were once thought to be elements themselves. They are widely distributed in the earth's crust and are fairly abundant, although they we...

antenna

(Encyclopedia)antenna ăntĕnˈə [key], in electronics, system of wires or other conductors used to transmit or receive radio or other electromagnetic waves (see radio); sometimes called an aerial. The idea of usi...

Horlivka

(Encyclopedia)Horlivka hôrˈləfkə [key], Rus. Gorlovka, city (1989 pop. 337,000), E Ukraine, in the Donets Basin. It is a major coal-mining and industrial center, with a major chemical complex. Founded in 1867, ...

Glen Cove

(Encyclopedia)Glen Cove, city (2020 pop. 28,365), Nassau co., SE N.Y., on the north shore of Long Island, at the entrance to Hempstead Harbor; settled 1668, inc. as a...

Nagaoka

(Encyclopedia)Nagaoka nägäˈôkä [key], city (1990 pop. 185,938), Niigata prefecture, central Honshu, Japan. An industrial center, it has oil refineries, chemical and food processing plants, engineering works, a...

Novomoskovsk

(Encyclopedia)Novomoskovsk nôˌvəməskôfskˈ [key], city (1989 pop. 146,000), W central European Russia. An industrial center in the Moscow lignite basin, it has lignite mines and chemical plants. Founded in 193...

Ube

(Encyclopedia)Ube o͞oˈbā [key], city (1990 pop. 175,053), Yamaguchi prefecture, SW Honshu, Japan, on the Inland Sea. It has a modern harbor and an important chemical industry. Coal mining, once the city's larges...