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Bakı

(Encyclopedia)Bakı bəko͞oˈ [key], city (2021 est. pop. 2,371,000), capital of Azerbaijan, on the Caspia...

smoke

(Encyclopedia)smoke, visible gaseous product of incomplete combustion. Smoke varies with its source, but it usually comprises hot gas and suspended particles of carbon and tarry substances, or soot. To reduce the a...

Derbent

(Encyclopedia)Derbent dyĭrbyĕntˈ [key], city, SE European Russia, in Dagestan, on the Caspian Sea. It st...

incinerator

(Encyclopedia)incinerator, furnace for burning refuse. The older and simpler kind of incinerator was a brick-lined cell with a metal grate over a lower ash pit, with one opening in the top or side for loading and a...

Lockyer, Sir Joseph Norman

(Encyclopedia)Lockyer, Sir Joseph Norman lŏkˈyər [key], 1836–1920, English astronomer, educated on the Continent. One of the first to make a spectroscopic examination of the sun and stars, he devised (1868), i...

Langmuir, Irving

(Encyclopedia)Langmuir, Irving lăngˈmyo͞or [key], 1881–1957, American chemist, b. Brooklyn, N.Y. Associated (1909–50) with the research laboratory of the General Electric Company, he introduced atomic-hydrog...

Potteries, the

(Encyclopedia)Potteries, the, area, c.9 mi (15 km) long and 3 mi (4.8 km) wide, Staffordshire, W central England, extending northwest-southeast in the upper Trent valley. The area includes Stoke-on-Trent and part o...

aerogel

(Encyclopedia)aerogel, any of a group of extremely light and porous solid materials; the lightest is less than four times as dense as dry air. Aerogels are produced from certain gels (see colloid) by heating the ge...

Vlorë

(Encyclopedia)Vlorë vəlōˈnə [key], city (1989 pop. 71,662), capital of Vlorë dist., SW Albania, on Vlorë Bay of the Adriatic Sea. Vlorë is a major seaport and a commercial center. Its industries produce oli...

Bayonne, town, France

(Encyclopedia)Bayonne bäyônˈ [key], town, Pyrénées-Atlantiques dept., SW France, in Gascony, on the Ad...