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sulfide

(Encyclopedia)sulfide, chemical compound containing sulfur and one other element or sulfur and a radical. Sulfides may be salts or esters of hydrogen sulfide, H2S, or may be formed directly, e.g., by heating a meta...

Bayle, Pierre

(Encyclopedia)Bayle, Pierre pyĕr bāl [key], 1647–1706, French philosopher. Born a Huguenot, he converted to Roman Catholicism and then returned to Protestantism. To avoid French intolerance of Protestants, he m...

Souphanouvong, Prince

(Encyclopedia)Souphanouvong, Prince so͞ofäˈno͞ovŏngˌ [key], 1909–95, Laotian government official; half-brother of Prince Souvanna Phouma. Although a member of Laos's royal family, he was an active nationali...

Bath, city, England

(Encyclopedia)Bath, city (2021 pop. 88,859), Bath and North East Somerset, SW England, in the Avon River valley. Britain's leading winter resort, Bath has the only na...

brass

(Encyclopedia)brass, alloy having copper (55%–90%) and zinc (10%–45%) as its essential components. The properties of brass vary with the proportion of copper and zinc and with the addition of small amounts of o...

Bachelard, Gaston

(Encyclopedia)Bachelard, Gaston gästôNˈ bäshlärˈ [key], 1884–1962, French philosopher. He held degrees in physics, mathematics, and philosophy and taught at Dijon (1930–40) and the Univ. of Paris (1940–...

Young Men's Christian Association

(Encyclopedia)Young Men's Christian Association, (the Y or YMCA), organization having as its objective the development of values and behaviors that are consistent with Christian principles. Despite its name, member...

Yung-lo

(Encyclopedia)Yung-lo yo͞ong-lô [key], 1359–1424, reign title of the 3d emperor (1403–24) of the Chinese Ming dynasty, whose personal name was Chu Ti. He rose to power in N China after being delegated by his ...

radioactivity

(Encyclopedia)CE5 Effects of a magnetic field on the products of radioactivity CE5 Disintegration series: Radioactive decay of radium-226 into lead-206 radioactivity, spontaneous disintegration or decay of t...

Nemtsov, Boris Yefimovich

(Encyclopedia)Nemtsov, Boris Yefimovich, 1959–2015, Russian physicist and politician. He worked at the Gorky Radiophysics Research Institute (1981–90) before he was elected to the Soviet Congress of People's De...