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Robert, Léopold

(Encyclopedia)Robert, Léopold lāôpôldˈ rōbĕrˈ [key], 1794–1835, French genre painter, b. Switzerland; pupil of J. L. David. He excelled in depicting Italian folk life in a classical style. His two best-kn...

Oppenheimer, J. Robert

(Encyclopedia)Oppenheimer, J. Robert ŏpˈənhīˌmər [key], 1904–67, American physicist, b. New York City, grad. Harvard (B.A., 1925), Ph.D. Univ. of Göttingen, 1927. He taught at the Univ. of California and t...

Henry I, king of England

(Encyclopedia)Henry I, 1068–1135, king of England (1100–1135), youngest son of William I. He was called Henry Beauclerc because he could write. He quarreled with his elder brothers, William II of England and Ro...

Roger I

(Encyclopedia)Roger I (Roger Guiscard), c.1031–1101, Norman conqueror of Sicily; son of Tancred de Hauteville (see Normans). He went to Italy in 1058 to join his brother, Robert Guiscard, in conquering Apulia and...

Heinlein, Robert Anson MacDonald

(Encyclopedia)Heinlein, Robert Anson MacDonald hīˈlīn [key], 1907–88, American science-fiction writer, b. Butler, Mo. His best-known novel, Stranger in a Strange Land (1961), concerns a young man who is raised...

element

(Encyclopedia) CE5 element, in chemistry, a substance that cannot be decomposed into simpler substances by chemical means. A substance such as a compound can be decomposed into its constituent elements by means o...

kinetic-molecular theory of gases

(Encyclopedia)kinetic-molecular theory of gases, physical theory that explains the behavior of gases on the basis of the following assumptions: (1) Any gas is composed of a very large number of very tiny particles ...

Rathlin Island

(Encyclopedia)Rathlin Island răthˈlĭn [key], 5 sq mi (13 sq km), Moyle dist., N Northern Ireland. Its cliffs, of limestone and basalt, rise at Slieveacarn to 449 ft (137 m). Farming and fishing are important. St...
 

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