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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...

Botha, Louis

(Encyclopedia)Botha, Louis bōˈtə [key], 1862–1919, South African soldier and statesman. A Boer (Afrikaner), he participated in the founding (1884) of the New Republic, which joined (1888) the Transvaal. Althou...

lightning

(Encyclopedia)lightning, electrical discharge accompanied by thunder, commonly occurring during a thunderstorm. The discharge may take place between one part of a cloud and another part (intracloud), between one cl...

satellite, natural

(Encyclopedia)satellite, natural, celestial body orbiting a planet, dwarf planet, asteroid, or star of a larger size. The most familiar natural satellite is the earth's moon; thus, satellites of other planets are o...

Bode's law

(Encyclopedia)Bode's law [for J. E. Bode], also known as Titius's law or the Titius-Bode law, empirical relationship between the mean distances of the planets from the sun. If each number in the series 0, 3, 6, 12,...

Velázquez, Diego Rodríguez de Silva y

(Encyclopedia)Velázquez, Diego Rodríguez de Silva y rôᵺrēˈgāth ᵺā sēlˈvä ē vāläthˈkāth [key], 1599–1660, b. Seville. He was the most celebrated painter of the Spanish school. Velázquez's dev...

Thurow, Lester Carl

(Encyclopedia)Thurow, Lester Carl tho͝orˈō, thərōˈ [key], 1938–2016, American economist, b. Livingston, Mont.; B.A. Williams College, 1960; M.A. Oxford, 1962; Ph.D. Harvard, 1964. Professor of management an...

Clayton-Bulwer Treaty

(Encyclopedia)Clayton-Bulwer Treaty, concluded (Apr. 19, 1850) at Washington, D.C., between the United States, represented by Secretary of State John M. Clayton, and Great Britain, represented by the British plenip...

Browne, Sir Thomas

(Encyclopedia)Browne, Sir Thomas, 1605–82, English author and physician, b. London, educated at Oxford and abroad, knighted (1671) by Charles II. His Religio Medici, in which Browne attempted to reconcile science...

Young, Thomas

(Encyclopedia)Young, Thomas, 1773–1829, English physicist, physician, and Egyptologist. He established (1799) a medical practice in London and was elected (1811) to the staff of St. George's Hospital there. His l...