Columbia Encyclopedia

Search results

441 results found

Corman, Roger William

(Encyclopedia) Corman, Roger William, 1926-, American film director, screenwriter, and producer, b. Detroit, Mi., Stanford Univ. (B.S., 1947). Corman studied industr...

Staël, Germaine de

(Encyclopedia)Staël, Germaine de zhĕrmĕnˈ də stäl [key], 1766–1817, French-Swiss woman of letters, whose full name was Anne Louise Germaine Necker, baronne de Staël-Holstein. Born in Paris, the daughter of...

Monet, Claude

(Encyclopedia)Monet, Claude klōd mônāˈ [key], 1840–1926, French landscape painter, b. Paris. Monet was a founder of impressionism. He adhered to its principles throughout his long career and is considered the...

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...

Hartford Convention

(Encyclopedia)Hartford Convention, Dec. 15, 1814–Jan. 4, 1815, meeting to consider the problems of New England in the War of 1812; held at Hartford, Conn. Prior to the war, New England Federalists (see Federalist...

iodine

(Encyclopedia)iodine īˈədīn, –dĭn [key] [Gr.,=violet], nonmetallic chemical element; symbol I; at. no. 53; at. wt. 126.90447; m.p. 113.5℃; b.p. 184.35℃; sp. gr. 4.93 at 20℃; valence −1, +1, +3, +5, o...

sea turtle

(Encyclopedia)sea turtle, name for several species of large marine turtles found in tropical and subtropical oceans. These turtles are modified for life in the ocean by having flipperlike forelimbs without toes and...

semiconductor

(Encyclopedia)CE5 N-type and P-type crystals: In a pure silicon crystal each silicon atom (Si) is surrounded by four valence electrons. In the N-doped semiconductor, illustrated in the left-hand figure, some sil...

plutonium

(Encyclopedia)plutonium plo͞otōˈnēəm [key], radioactive chemical element; symbol Pu; at. no. 94; mass no. of most stable isotope 244; m.p. 641℃; b.p. 3,232℃; sp. gr. 19.84 at 20℃; valence +3, +4, +5, or ...

Ruskin, John

(Encyclopedia)Ruskin, John, 1819–1900, English critic and social theorist. During the mid-19th cent. Ruskin was the virtual dictator of artistic opinion in England, but Ruskin's reputation declined after his deat...