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Cherenkov radiation

(Encyclopedia)Cherenkov radiation or Cerenkov radiation [for P. A. Cherenkov], light emitted by a transparent medium when charged particles pass through it at a speed greater than the speed of light in the medium. ...

venom

(Encyclopedia)venom or zootoxin, any of a variety of poisonous substances produced by animals. In poisonous snakes, venom is secreted in two poison glands, one on each side of the upper jaw, and enters the fang by ...

Fort Sumter

(Encyclopedia)Fort Sumter, fortification, built 1829–60, on a shoal at the entrance to the harbor of Charleston, S.C., and named for Gen. Thomas Sumter; scene of the opening engagement of the Civil War. Upon pass...

Alamein, El

(Encyclopedia)Alamein, El äl älămānˈ [key], town, N Egypt, on the Mediterranean Sea. It was the site of a decisive British victory in World War II (see North Africa, campaigns in). In preparation for an attack...

Stimson, Henry Lewis

(Encyclopedia)Stimson, Henry Lewis, 1867–1950, American statesman, b. New York City. A graduate of Yale and of Harvard, he became associated with Elihu Root in law practice in New York City. Stimson was (1906–9...

von Klitzing, Klaus

(Encyclopedia)von Klitzing, Klaus, 1943–, German physicist, Ph.D. Univ. of Würzburg, 1972. He was a professor at the Technical Univ. of Munich (1980–85) and then director of the Max Planck Institute for Solid ...

perturbation

(Encyclopedia)perturbation pŭrˌtərbāˈshən [key], in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used for the effect produce...

strategy and tactics

(Encyclopedia)strategy and tactics, in warfare, related terms referring, respectively, to large-scale and small-scale planning to achieve military success. Strategy may be defined as the general scheme of the condu...

Magendie, François

(Encyclopedia)Magendie, François fräNswäˈ mäzhäNdēˈ [key], 1783–1855, French physician. He taught at the Collège de France and is considered a founder of experimental physiology. He distinguished the mot...

impasto

(Encyclopedia)impasto ĭmpăsˈtō, –päˈstō [key], thickly applied paint that projects from the picture surface. Such works as Childe Hassam's Allies Day (1917; National Gall. of Art, Washington, D.C.) and Han...