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ballistics

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

crane, in zoology

(Encyclopedia) crane, large wading bird found in marshes in the Northern Hemisphere and in Africa. Although sometimes confused with herons, cranes are more closely related to rails and limpkins.…

Gide, André

(Encyclopedia) Gide, AndréGide, AndréäNdrāˈ zhēd [key], 1869–1951, French writer. He established a reputation as an unconventional novelist with The Immoralist (1902, tr. 1930), a partly…

Campion, Saint Edmund

(Encyclopedia) Campion, Saint EdmundCampion, Saint Edmundkămˈpēən [key], c.1540–1581, English Jesuit martyr, educated at St. Paul's School and St. John's College, Oxford. As a fellow at Oxford he…

thyrotropin

(Encyclopedia) thyrotropinthyrotropinthīˌrätrōˈpĭn [key] or thyroid-stimulating hormone (TSH), hormone released by the anterior pituitary gland that stimulates the thyroid gland to release thyroxine…

Zagajewski, Adam

(Encyclopedia) Zagajewski, Adam, 1945–2021, Polish poet, b. Lviv, Jagiellonian Univ. (B.A., 1968; M.A., 1970). He and his…

tachyon

(Encyclopedia) tachyontachyontăkˈēŏnˌ [key], hypothetical elementary particle that travels only at speeds exceeding that of light. According to the theory of relativity, the speed of light is the…

sound

(Encyclopedia) CE5 Sound waves: An air pressure wave radiating outward from a loudspeaker is perceived as sound. sound, any disturbance that travels through an elastic medium such as air, ground…

Merwin, W. S.

(Encyclopedia) Merwin, W. S. (William Stanley Merwin), 1927–2019, American poet and translator, b. New York City. After graduating from Princeton in 1948, he traveled in Europe, working as a tutor…

Livingstone, David

(Encyclopedia) Livingstone, DavidLivingstone, Davidlĭvˈĭngstən, –stōnˌ [key], 1813–73, Scottish missionary and explorer in Africa, the first European to cross the African continent. From 1841 to 1852…