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Æthelred, king of England

(Encyclopedia)Æthelred, 965?–1016, king of England (978–1016), called Æthelred the Unready [Old Eng. unrœd=without counsel]. He was the son of Edgar and the half-brother of Edward the Martyr, whom he succeed...

snow

(Encyclopedia)CE5 Snow occurs in many different forms. Among the various recognized classes of forms are (A) needles; (B) columns and groups of columns; (C) plates; (D) branched, or dendritic, plates; (E) combin...

Abraham

(Encyclopedia)Abraham [according to the Book of Genesis, Heb.,=father of many nations] or Abram āˈbrəm [key] [Heb.,=exalted father], in the Bible, progenitor of the Hebrews; in the Qur'an, ancestor of the Arabs....

Tibetan art and architecture

(Encyclopedia)Tibetan art and architecture have been almost entirely religious in character (see Tibetan Buddhism). The art of Tibetan Lamaism retains strong elements drawn from the forms of both Hinduism and Buddh...

electron tube

(Encyclopedia)CE5 Triode electron tube electron tube, device consisting of a sealed enclosure in which electrons flow between electrodes separated either by a vacuum (in a vacuum tube) or by an ionized gas at l...

arsenic

(Encyclopedia)arsenic ärˈsənĭk [key], a semimetallic chemical element; symbol As; at. no. 33; at. wt. 74.92160; m.p. 817℃ (at 28 atmospheres pressure); sublimation point 613℃; sp. gr. (stable form) 5.73; va...

particle detector

(Encyclopedia)CE5 Particle detector—Bubble chamber: A. Pressure drops as piston is raised; B. Charged particles passing through chamber ionize atoms in liquid; C. Bubbles form around atoms and form visible tra...

Stieglitz, Alfred

(Encyclopedia)Stieglitz, Alfred stēgˈlĭts [key], 1864–1946, American photographer, editor, and art exhibitor, b. Hoboken, N.J. The first art photographer in the United States, Stieglitz more than any other Ame...

rhyme

(Encyclopedia)rhyme or rime, the most prominent of the literary artifices used in versification. Although it was used in ancient East Asian poetry, rhyme was practically unknown to the ancient Greeks and Romans. Wi...

electron

(Encyclopedia)electron, elementary particle carrying a unit charge of negative electricity. Ordinary electric current is the flow of electrons through a wire conductor (see electricity). The electron is one of the ...