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Pasteur, Louis
(Encyclopedia)Pasteur, Louis păstŭrˈ, Fr. lwē pästörˈ [key], 1822–95, French chemist. He taught at Dijon, Strasbourg, and Lille, and in Paris at the École normale supérieure and the Sorbonne (1867–89)....tektite
(Encyclopedia)tektite tĕktīt [key], naturally occurring, silica-rich (65%–80% SiO2) glass resembling obsidian and sometimes shale, and is normally jet black to olive green. They appear as small rounded or elong...Laplace, Pierre Simon, marquis de
(Encyclopedia)Laplace, Pierre Simon, marquis de pyĕr sēmôNˈ märkēˈ də läpläsˈ [key], 1749–1827, French astronomer and mathematician. At 18 he went to Paris, proved his gift for mathematical analysis to...Gould, Stephen Jay
(Encyclopedia)Gould, Stephen Jay, 1941–2002, American paleontologist and science writer, b. Queens, New York; grad. Antioch College (B.S., 1963), Columbia Univ. (Ph.D., 1967). With Niles Eldredge, Gould proposed ...hooks, bell
(Encyclopedia)hooks, bell, 1952–2021, American author, poet, social critic, and Black feminist, b. Hopkinsville, Ky., as Gloria Jean Watkins, Stanford Univ. (B.A., ...Lucretius
(Encyclopedia)Lucretius (Titus Lucretius Carus) lo͞okrēˈshəs [key], c.99 b.c.–c.55 b.c., Roman poet and philosopher. Little is known about his life. A chronicle of St. Jerome speaks of the loss of his reason ...Morgan, Lewis Henry
(Encyclopedia)Morgan, Lewis Henry, 1818–81, American anthropologist, b. Aurora, N.Y., grad. Union College, Schenectady, 1840. Practicing as a lawyer, he became interested in the Native Americans of his locality, ...photon
(Encyclopedia)photon fōˈtŏn [key], the particle composing light and other forms of electromagnetic radiation, sometimes called light quantum. The photon has no charge and no mass. About the beginning of the 20th...chiropractic
(Encyclopedia)chiropractic kīrəprăkˈtĭk [key] [Gr.,=doing by hand], medical practice based on the theory that all disease results from a disruption of the functions of the nerves. The principal source of inter...Gautier, Théophile
(Encyclopedia)Gautier, Théophile gōtyāˈ [key], 1811–72, French poet, novelist, and critic. He was a leading exponent of “art for art's sake”—the belief that formal, aesthetic beauty is the sole purpose...Browse by Subject
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