Columbia Encyclopedia

Search results

500 results found

osmium

(Encyclopedia)osmium ŏzˈmēəm [key], metallic chemical element; symbol Os; at. no. 76; at. wt. 190.23; m.p. 3,045±30℃; b.p. 5,027±100℃; sp. gr. 22.57 at 20℃; valence usually +0 to +8. Osmium is a very ha...

nobelium

(Encyclopedia)nobelium nōbēˈlēəm [key], artificially produced radioactive chemical element; symbol No; at. no. 102; mass no. of most stable isotope 259; m.p. 827℃; b.p. and density unknown; valence +2, +3. I...

terbium

(Encyclopedia)terbium tûrˈbēəm [key] [from Ytterby, a village in Sweden], metallic chemical element; symbol Tb; at. no. 65; at. wt. 158.92535; m.p. 1,356℃; b.p. 3,123℃; sp. gr. about 8.25; valence +3 or +4....

ytterbium

(Encyclopedia)ytterbium ĭtûrˈbēəm [key] [for Ytterby, a town in Sweden], metallic chemical element; symbol Yb; at. no. 70; at. wt. 173.054; m.p. 819℃; b.p. about 1,194℃; sp. gr. about 7.0; valence +2 or +3...

negligence

(Encyclopedia)negligence, in law, especially tort law, the breach of an obligation (duty) to act with care, or the failure to act as a reasonable and prudent person would under similar circumstances. For a plaintif...

Nussbaum, Martha Craven

(Encyclopedia)Nussbaum, Martha C., 1947–, American philosopher, b. New York City, Ph.D. Harvard University, 1975. The Ernst Freund Distinguished Service Professor o...

USA PATRIOT Act

(Encyclopedia)USA PATRIOT Act [Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorists], 2001, U.S. federal law intended to give federal authorities increased ...

Mattarella, Sergio

(Encyclopedia)Mattarella, Sergio, 1941–, Italian political leader. Born into a prominent Sicilian family, he studied law at the Sapienza Univ. of Rome and taught constitutional law at the Univ. of Palermo. He was...

Hale, Sir Matthew

(Encyclopedia)Hale, Sir Matthew, 1609–76, English jurist. He was successively a judge in the Court of Common Pleas (1654), chief baron of the Exchequer (1660), and chief justice of the Court of King's Bench (1671...

Domat, Jean

(Encyclopedia)Domat, Jean zhäN dōmäˈ [key], 1625–96, French jurist. His Les Loix civiles dans leur ordre naturel [civil laws in their natural order] (3 vol., 1689–94) is a restatement of Roman law considere...