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Meitner, Lise

(Encyclopedia)Meitner, Lise lēˈzə mītˈnər [key], 1878–1968, Austrian-Swedish physicist and mathematician. She was professor at the Univ. of Berlin (1926–33). A refugee from Germany after 1938, she became ...

Laird, Melvin Robert

(Encyclopedia)Laird, Melvin Robert, 1922–2016, American politician, U.S. secretary of defense (1969–73), b. Omaha, Nebr. After serving (1942–46) in the navy during World War II, he entered politics as a Repub...

Cai Guo-Qiang

(Encyclopedia)Cai Guo-Qiang, 1957–, Chinese painter and a sculptor especially known for using gunpowder as a medium and explosions and fireworks as means of artistic expression, b. Quanzhou, Fujian prov., studied...

California, University of

(Encyclopedia)California, University of, at ten campuses, main campus at Berkeley; land-grant and state supported; coeducational; chartered 1868, opened 1869 when it took over the College of California (est. 1853 a...

thulium

(Encyclopedia)thulium tho͞oˈlēəm [key] [from Thule, an ancient name for Scandinavia], metallic chemical element; symbol Tm; at. no. 69; at. wt. 168.93421; m.p. about 1,545℃; b.p. 1,947℃; sp. gr. 9.3; valenc...

plasma

(Encyclopedia)plasma, in physics, fully ionized gas of low density, containing approximately equal numbers of positive and negative ions (see electron and ion). It is electrically conductive and is affected by magn...

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...

Pearson, Lester Bowles

(Encyclopedia)Pearson, Lester Bowles, 1897–1972, Canadian diplomat and political leader, b. Ontario prov. He served in the Canadian army in World War I. Pearson taught history at the Univ. of Toronto from 1924 to...

Harpers Ferry

(Encyclopedia)Harpers Ferry, town (2020 pop. 285), Jefferson co., easternmost W Va., at the confluence of the Shenandoah and Potomac rivers; inc. 1763. The town is a ...

Berrigan brothers

(Encyclopedia)Berrigan brothers bĕrˈĭgən [key], American Catholic priests, writers, and social activists. Daniel Berrigan, 1921–2016, b. Syracuse, N.Y., was ordained in the Society of Jesus (Jesuits) in 1952....