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Yeats, W. B.

(Encyclopedia)Yeats, W. B. (William Butler Yeats), 1865–1939, Irish poet and playwright, b. Dublin. The greatest lyric poet Ireland has produced and one of the major figures of 20th-century literature, Yeats was ...

Socialist parties

(Encyclopedia)Socialist parties in European history, political organizations formed in European countries to achieve the goals of socialism. The French Socialist party, known as the SFIO from its official name ...

ammonia

(Encyclopedia)ammonia, chemical compound, NH3, colorless gas that is about one half as dense as air at ordinary temperatures and pressures. It has a characteristic pungent, penetrating odor. Ammonia forms a minute ...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

seismology

(Encyclopedia)seismology sīzmŏlˈəjē, sīs– [key], scientific study of earthquakes and related phenomena, including the propagation of waves and shocks on or within the earth by natural or artificially genera...

type

(Encyclopedia)type, for printing, was invented in China (c.1040), using woodblocks. Related devices, such as seals and stamps for making impressions in clay, had been used in ancient times in Babylon and elsewhere....

Walpole, Robert, 1st earl of Orford

(Encyclopedia)Walpole, Robert, 1st earl of Orford, 1676–1745, English statesman. Walpole is usually described as the first prime minister of Great Britain, but he was not a prime minister in the modern sense. A...

Icelandic literature

(Encyclopedia)Icelandic literature, the literature of Iceland. For the earliest literature of Iceland, see Old Norse literature. The 20th cent. saw the rise of a more introspective writing, influenced by Nietzsch...

spectrum

(Encyclopedia)CE5 Dispersion of white light by a triangular prism spectrum, arrangement or display of light or other form of radiation separated according to wavelength, frequency, energy, or some other propert...

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...