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Randolph, Edmund

(Encyclopedia)Randolph, Edmund, 1753–1813, American statesman, b. Williamsburg, Va.; nephew of Peyton Randolph. He studied law under his father, John Randolph, a Loyalist who went to England at the outbreak of th...

Begin, Menachem

(Encyclopedia)Begin, Menachem mĕnäˈkhĕm bāˈgĭn [key], 1913–92, Zionist leader and Israeli prime minister (1977–83), b. Russia. He became (1938) leader of a Zionist youth movement in Poland, where he also...

Timor

(Encyclopedia)Timor tēˈmôr [key] [Malay,=east], island (1990 est. pop. 3,900,000), c.13,200 sq mi/34,200 sq km, largest and easternmost of the Lesser Sundas, in the Malay Archipelago. Timor is divided politicall...

Bassiouni, M. Cherif

(Encyclopedia)Bassiouni, M. Cherif (Mahmoud Cherif Bassiouni), 1937–2017, Egyptian-American international criminal law jurist and human-rights advocate, b. Cairo. Bassiouni fought for Egypt in the Suez conflict (...

spark chamber

(Encyclopedia)spark chamber, in physics, device for recording the passage of elementary particles produced by reactions in a particle accelerator. Particles pass through a stack of metal plates or wire grids that a...

shock absorber

(Encyclopedia)shock absorber, device for reducing the effect of a sudden shock by the dissipation of the shock's energy. On an automobile, springs and shock absorbers are mounted between the wheels and the frame. W...

placebo

(Encyclopedia)placebo pləsēˈbō [key], inert substance given instead of a potent drug. Placebo medications are sometimes prescribed when a drug is not really needed or when one would not be appropriate because t...

Sagan, Carl Edward

(Encyclopedia)Sagan, Carl Edward sāˈgən [key], 1934–96, American astronomer and popularizer of science, b. New York City. Early in his career he investigated radio emissions from Venus and concluded that the c...

ballistics

(Encyclopedia)ballistics bəlĭsˈtĭks [key], science of projectiles. Interior ballistics deals with the propulsion and the motion of a projectile within a gun or firing device. Its problems include the ignition a...

vibration

(Encyclopedia)vibration, in physics, commonly an oscillatory motion—a movement first in one direction and then back again in the opposite direction. It is exhibited, for example, by a swinging pendulum, by the pr...