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transit instrument

(Encyclopedia)transit instrument or transit, telescope devised to observe stars as they cross the meridian and used for determining time. Its viewing tube swings on a rigid horizontal axis restricting its movements...

Boundary Peak

(Encyclopedia)Boundary Peak, 13,140 ft (4,005 m) high, SW Nev., in the White Mts. near the Calif. line. It is the highest point in Nevada.

Euclid, Greek mathematician

(Encyclopedia)Euclid yo͞oˈklĭd [key], fl. 300 b.c., Greek mathematician. Little is known of his life other than the fact that he taught at Alexandria, being associated with the school that grew up there in the l...

Nedabiah

(Encyclopedia)Nedabiah nĕdˌəbīˈə [key], in the Bible, one of David's line. ...

Wettin

(Encyclopedia)Wettin vĕtˈĭn [key], German dynasty, which ruled in Saxony, Thuringia, Poland, Great Britain, Belgium, and Bulgaria. It takes its name from a castle on the Saale near Halle. The family gained promi...

non-Euclidean geometry

(Encyclopedia)non-Euclidean geometry, branch of geometry in which the fifth postulate of Euclidean geometry, which allows one and only one line parallel to a given line through a given external point, is replaced b...

Brasstown Bald

(Encyclopedia)Brasstown Bald, peak, 4,784 ft (1,458 m) high, N Ga., in the Blue Ridge of the Appalachian Mts., near the N.C. line. It is the highest point in Georgia. ...

Steele, Mount

(Encyclopedia)Steele, Mount, 16,624 ft (5,067 m) high, in the St. Elias Mts., SW Yukon, Canada, in Kluane National Park near the Alaska line; one of Canada's tallest peaks. ...

Ellwood City

(Encyclopedia)Ellwood City, industrial borough (2020 pop. 7,166), Beaver and Lawrence counties, W central Pa., near the Ohio line; inc. 1892. It has many metal-produc...

Pearl River

(Encyclopedia)Pearl River, uninc. village (1990 pop. 15,314), Rockland co., SE N.Y., near the N.J. line. It is a residential suburb of New York City, and a computer and telecommunications research and development c...