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superconductivity

(Encyclopedia)superconductivity, abnormally high electrical conductivity of certain substances. The phenomenon was discovered in 1911 by Heike Kamerlingh Onnes, who found that the resistance of mercury dropped sudd...

Trier

(Encyclopedia)Trier trēr [key], Latin Augusta Treverorum, city (1994 pop. 99,183), Rhineland-Palatinate, SW Germany, a port on the Moselle (Ger. Mosel) River, near the Luxembourg border. It is also known, in Engli...

Vienna, Congress of

(Encyclopedia)Vienna, Congress of, Sept., 1814–June, 1815, one of the most important international conferences in European history, called to remake Europe after the downfall of Napoleon I. Although the territo...

Humboldt, Alexander, Freiherr von

(Encyclopedia)Humboldt, Alexander, Freiherr von hŭmˈbōlt, Ger. älĕksänˈdər frīˈhĕr fən ho͝omˈbôlt [key], 1769–1859, German naturalist, inventor, explorer, and author, the most eminent scientist of ...

Anatolian languages

(Encyclopedia)Anatolian languages ănˌətōˈlēən [key], subfamily of the Indo-European family of languages (see The Indo-European Family of Languages, tableIndo-European, table); the term “Anatolian languages...

parallax

(Encyclopedia)CE5 The trigonometric parallax of a star, expressed by the angle θ, is a measure of its apparent motion against the background of more distant stars as a result of the earth's motions in its orbit...

National Socialism

(Encyclopedia)National Socialism or Nazism, doctrines and policies of the National Socialist German Workers' party, which ruled Germany under Adolf Hitler from 1933 to 1945. In German the party name was Nationalsoz...

Sun Yat-sen

(Encyclopedia)Sun Yat-sen so͞on yät-sĕn [key], Mandarin Sun Wen, 1866–1925, Chinese revolutionary. He was born near Guangzhou into a farm-owning family. He attended (1879–82) an Anglican boys school in Honol...

wages

(Encyclopedia)wages, payment received by an employee in exchange for labor. It may be in goods or services but is customarily in money. The term in a broad sense refers to what is received in any way for labor, but...

war

(Encyclopedia)war, armed conflict between states or nations (international war) or between factions within a state (civil war), prosecuted by force and having the purpose of compelling the defeated side to do the w...