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Turner, Nat

(Encyclopedia)Turner, Nat, 1800–1831, American slave, leader of the Southampton Insurrection (1831), b. Southampton co., Va. Deeply religious from childhood, Turner...

snail

(Encyclopedia)snail, name commonly used for a gastropod mollusk with a shell. Included in the thousands of species are terrestrial, freshwater, and marine forms. Some eat both plant and animal matter; others eat on...

weight

(Encyclopedia)weight, measure of the force of gravity on a body (see gravitation). Since the weights of different bodies at the same location are proportional to their masses, weight is often used as a measure of m...

Schiele, Egon

(Encyclopedia)Schiele, Egon āˈgôn shēˈlə [key], 1890–1918, Austrian expressionist painter and draftsman, studied Vietta Academy of Fine Arts. Influenced by the French impressionists, then by Gustav Klimt, S...

Sherman, Cindy

(Encyclopedia)Sherman, Cindy (Cynthia Morris Sherman), 1954–, American photographer, b. Glen Ridge, N.J. In images in which makeup, costumes, wigs, and the like allow her to take on a variety of guises and roles,...

electron

(Encyclopedia)electron, elementary particle carrying a unit charge of negative electricity. Ordinary electric current is the flow of electrons through a wire conductor (see electricity). The electron is one of the ...

exobiology

(Encyclopedia)exobiology or astrobiology, search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back ...

adaptation

(Encyclopedia)adaptation, in biology, has several meanings. It can mean the adjustment of living matter to environmental conditions and to other living things either in an organism's lifetime (physiological adaptat...

condensation

(Encyclopedia)condensation, in physics, change of a substance from the gaseous (vapor) to the liquid state (see states of matter). Condensation is the reverse of vaporization, or change from liquid to gas. It can b...

Ellsberg, Daniel

(Encyclopedia)Ellsberg, Daniel, 1931–2023, American political activist, b. Chicago, grad. Columbia Univ. (B.S., 1952, Ph.D., 1959). After serving in the U.S. Marine...