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Rowell, Newton Wesley

(Encyclopedia)Rowell, Newton Wesley rouˈəl [key], 1867–1941, Canadian jurist and statesman, b. Ontario. He was elected (1911) to the Ontario legislature and then served in the Canadian House of Commons (1917–...

chemosynthesis

(Encyclopedia)chemosynthesis, process in which carbohydrates are manufactured from carbon dioxide and water using chemical nutrients as the energy source, rather than the sunlight used for energy in photosynthesis....

fuel

(Encyclopedia)fuel, material that can be burned or otherwise consumed to produce heat. The common fuels used in industry, transportation, and the home are burned in air. The carbon and hydrogen in fuel rapidly comb...

wave, in physics

(Encyclopedia)wave, in physics, the transfer of energy by the regular vibration, or oscillatory motion, either of some material medium or by the variation in magnitude of the field vectors of an electromagnetic fie...

transactinide elements

(Encyclopedia)transactinide elements trănsˌăkˈtənīdˌ [key], in chemistry, elements with atomic numbers greater than that of lawrencium (at. no. 103), the last member of the actinide series. See transuranium ...

Broglie, Maurice, duc de

(Encyclopedia)Broglie, Maurice, duc de, 1875–1960, French physicist; brother of Louis Victor, duc de Broglie. His contributions include notable work on X rays and in atomic physics, radioactivity, and electricity...

fallout

(Encyclopedia)fallout, minute particles of radioactive material produced by nuclear explosions (see atomic bomb; hydrogen bomb; Chernobyl) or by discharge from nuclear-power or atomic installations and scattered th...

transition elements

(Encyclopedia)transition elements or transition metals, in chemistry, group of elements characterized by the filling of an inner d electron orbital as atomic number increases. This includes the elements from titani...

Kim Il Sung

(Encyclopedia)Kim Il Sung kĭm jông ĭl [key], 1941?–2011, was groomed as his successor. Active in the Korean Workers' party leadership from 1964, Kim Jong Il became secretary of its central committee in 1973. I...

stellar structure

(Encyclopedia)stellar structure, physical properties of a star and the processes taking place within it. Except for that of the sun, astronomers must draw their conclusions regarding stellar structure on the basis ...