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Walpole, Sir Hugh Seymour

(Encyclopedia)Walpole, Sir Hugh Seymour, 1884–1941, English novelist, b. New Zealand, educated at Cambridge. His first two novels were failures, but with Fortitude (1913) he achieved financial and literary succes...

Aden, Gulf of

(Encyclopedia)Aden, Gulf of äˈdən, āˈ– [key], western arm of the Arabian Sea, 550 mi (885 km) long, lying between Yemen and Somalia; connected with the Red Sea by the Bab el Mandeb. The gulf is on the great ...

Ts'ao Hsüeh-ch'in

(Encyclopedia)Ts'ao Hsüeh-ch'in tsouˈ shyĕˈchĭnˈ [key], 1715–63, Chinese novelist. He is the author of Story of the Stone (or A Dream of Red Mansions), which is considered China's greatest novel. After his ...

Tukhachevsky, Mikhail Nikolayevich

(Encyclopedia)Tukhachevsky or Toukhachevski, Mikhail Nikolayevich both: mēkhəyēlˈ nyĭkəlīˈəvĭch to͞okhəchĕfˈskē [key], 1893–1937, Soviet marshal. An officer in the czarist army from 1914, he joined...

trogon

(Encyclopedia)trogon trōˈgŏn [key], family of tropical jungle birds related to the roadrunners and including the quetzal. Trogons are sedentary arboreal birds, 10 to 14 in. (25.4–35.6 cm) long, with short roun...

Swammerdam, Jan

(Encyclopedia)Swammerdam, Jan yän väˈmərdäm [key], 1637–80, Dutch naturalist. He was a pioneer in the use of the microscope. Before he turned to religious contemplation his chief interest was the study of in...

rainbow

(Encyclopedia)rainbow, arc showing the colors of the spectrum, violet inside and red outside, which appears when the sun shines through water droplets. It often appears while the sun is shining after a brief thunde...

vision

(Encyclopedia) CE5 Optic nerve vision, physiological sense of sight by which the form, color, size, movements, and distance of objects are perceived. Defects of vision include astigmatism, color blindness, far...

North Dakota

(Encyclopedia) CE5 North Dakota, state in the N central United States. It is bordered by Minnesota, across the Red River of the North (E), South Dakota (S), Montana (W), and the Canadian provinces of Saskatchewan...

rift valley

(Encyclopedia)rift valley, elongated depression, trough, or graben in the earth's crust, bounded on both sides by normal faults and occurring on the continents or under the oceans. The central flat block forming th...
 

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