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Grenville, Sir Richard

(Encyclopedia)Grenville, Sir Richard, 1542?–1591, English naval hero. His cousin, Sir Walter Raleigh, gave him command of the fleet of seven vessels carrying the first colonists to Roanoke Island in 1585. In 1591...

Evans, Oliver

(Encyclopedia)Evans, Oliver, 1755–1819, American inventor, b. near Newport, Del. He joined his brothers in a flour-milling business in Wilmington, and after studying similar earlier devices, he developed, install...

Darwin

(Encyclopedia)Darwin, city, capital of the Northern Territory, N Australia, on Port Darwin, an inlet of the Timor Sea. Remotely situated on the sparsely settled north...

polar front

(Encyclopedia)polar front, zone of transition between polar and tropical air masses. Its average position during the winter is at about 30° lat. and during the summer at about 60° lat. In the N Atlantic Ocean, fo...

pyramid, in geometry

(Encyclopedia)CE5 Pyramid pyramid, in geometry, solid figure bounded by a polygon (the base, or directrix) and the surface generated by a moving line (the generator) passing through a fixed point (vertex) and c...

Gabriel, Jacques Ange

(Encyclopedia)Gabriel, Jacques Ange zhäk äNzh gäbrēĕlˈ [key], 1698–1782, French architect of the classical tradition. Descendant of a long line of architects, he ranks as one of the most distinguished Frenc...

Gamelin, Maurice Gustave

(Encyclopedia)Gamelin, Maurice Gustave môrēsˈ güstävˈ gäməlăNˈ [key], 1872–1958, French army officer. During World War I he served on General Joffre's staff and as a division commander. He was made chie...

anomalistic year

(Encyclopedia)anomalistic year ənŏmˌəlĭsˈtĭk [key], time required for the earth to go from the perihelion point once around the sun and back to the perihelion point. It is 365 days, 6 hr, 13 min, 53.0 sec of...

Hickok, Wild Bill

(Encyclopedia)Hickok, Wild Bill, 1837–76, American frontier marshal, b. Troy Grove, near Ottawa, Ill., as James Butler Hickok. He took part in the Kansas struggle preceding the Civil War, was a driver of the Butt...

Huggins, Sir William

(Encyclopedia)Huggins, Sir William, 1824–1910, English astronomer. Using a spectroscope, he began to study the chemical constitution of stars from the observatory attached to his home in Tulse Hill, London. He pr...