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pump
(Encyclopedia)pump, device to lift, transfer, or increase the pressure of a fluid (gas or liquid) or to create a vacuum in an enclosed space by the removal of a gas (see vacuum pumps under vacuum). The centrifugal ...Vishniac, Roman
(Encyclopedia)Vishniac, Roman vĭshˈnēăk [key], 1897–1990, Russian-American biologist, photographer, linguist, art historian, and philosopher, b. Pavlosk, near St. Petersburg. Vishniac took degrees in medicine...geometric problems of antiquity
(Encyclopedia)geometric problems of antiquity, three famous problems involving elementary geometric constructions with straight edge and compass, conjectured by the ancient Greeks to be impossible but not proved to...Marx, Karl
(Encyclopedia)Marx, Karl, 1818–83, German social philosopher, the chief theorist of modern socialism and communism. In 1847 Marx joined the Communist League and with Engels wrote for it the famous Communist M...neutrino astronomy
(Encyclopedia)neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light. Approximately 100 billio...Mabinogion
(Encyclopedia)Mabinogion măbĭnōˈgēən [key], title given to a collection of medieval Welsh stories. Scholars differ as to the meaning of the word mabinogion: some think it to be the plural of the Welsh word ma...cloud computing
(Encyclopedia)cloud computing, the delivery of shared computing resources over a network in a manner that makes accessing and configuring those resources convenient and largely independent of the use of a required ...Ptolemy
(Encyclopedia)Ptolemy (Claudius Ptolemaeus), fl. 2d cent. a.d., celebrated Greco-Egyptian mathematician, astronomer, and geographer. He made his observations in Alexandria and was the last great astronomer of ancie...Coward, Noël
(Encyclopedia)Coward, Noël (Sir Noël Pierce Coward) nōˈəl [key], 1899–1973, English playwright, actor, composer, and director, b. Teddington, England. Coward first gained wide prominence in 1924 acting in hi...Alcott, Louisa May
(Encyclopedia)Alcott, Louisa May, 1832–88, American author, b. Germantown, Pa.; daughter of Bronson Alcott. Mostly educated by her father, she was a friend of Emerson and Thoreau, and her first book, Flower Fable...Browse by Subject
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