Columbia Encyclopedia

Search results

500 results found

beta particle

(Encyclopedia)beta particle, one of the three types of radiation resulting from natural radioactivity. Beta radiation (or beta rays) was identified and named by E. Rutherford, who found that it consists of high-spe...

Spratly Islands

(Encyclopedia)Spratly Islands, group of about 100 low islands and coral reefs in the central South China Sea, intersecting busy shipping lanes. The whole group is claimed by China, Taiwan, and Vietnam, and parts ar...

Sotomayor, Sonia

(Encyclopedia)Sotomayor, Sonia sōtōmīyôrˈ [key], 1954–, associate justice of the U.S. Supreme Court (2009–), b. Bronx, N.Y., to Puerto Rican parents, grad. Princeton (B.A. 1976), Yale (J.D. 1979). She work...

scarlet fever

(Encyclopedia)scarlet fever or scarlatina, an acute, communicable infection, caused by group A hemolytic streptococcal bacteria (see streptococcus) that produce an erythrogenic toxin. The disease is now uncommon, p...

silicone

(Encyclopedia)silicone, polymer in which atoms of silicon and oxygen alternate in a chain; various organic radicals, such as the methyl group, CH3, are bound to the silicon atoms. Silicones, which are unusually sta...

verdict

(Encyclopedia)verdict, in law, official decision of a jury respecting questions of fact that the judge has laid before it. In the United States, verdicts must be unanimous in federal courts; majority verdicts are c...

echo, in acoustics

(Encyclopedia)echo, reflection of a sound wave back to its source in sufficient strength and with a sufficient time lag to be separately distinguished. If a sound wave returns within 1⁄10 sec, the human ear is in...

fine

(Encyclopedia)fine. 1 In criminal law, sum of money exacted by a lawful tribunal as punishment for a crime. In the case of misdemeanors and minor infractions of the law, convicted persons ordinarily have the altern...

Fastolf, Sir John

(Encyclopedia)Fastolf, Sir John făsˈtŏlf [key], 1378?–1459, English soldier. He won distinction for his long service in the latter part of the Hundred Years War. He was knighted some time prior to 1418 for ser...

anointing of the sick

(Encyclopedia)anointing of the sick, sacrament of the Orthodox Eastern Church and the Roman Catholic Church, formerly known as extreme unction. In it a sick or dying person is anointed on eyes, ears, nostrils, lips...