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Leicester sheep

(Encyclopedia)Leicester sheep lĕsˈtər [key], breed of sheep originated from native stock as mutton producers in Leicestershire, England, by the English livestock breeder Robert Bakewell (c.1755). English Leicest...

Day, Dorothy

(Encyclopedia)Day, Dorothy, 1897–1980, American journalist and social activist, b. New York City. After studying at the Univ. of Illinois (1914–16), where she joined the Socialist party, she returned to New Yor...

geometric problems of antiquity

(Encyclopedia)geometric problems of antiquity, three famous problems involving elementary geometric constructions with straight edge and compass, conjectured by the ancient Greeks to be impossible but not proved to...

Stern, Robert A. M.

(Encyclopedia)Stern, Robert A. M. (Robert Arthur Morton Stern), 1939–, American architect, b. New York City. He studied architecture at Yale Univ., became a practicing architect in the mid-1960s, and a professor ...

Common Weights and Measures (table)

(Encyclopedia)Common Weights and Measures Length Area Volume and Capacity (Liquid and Dry) Weight (Mass) ...

minaret

(Encyclopedia)CE5 Minaret minaret mĭnərĕtˈ [key], tower, used in Islamic architecture, from which the faithful are called to prayer by a muezzin. Most mosques have one or more small towers, which are usuall...

Eisenstaedt, Alfred

(Encyclopedia)Eisenstaedt, Alfred, 1898–1995, American photographer, b. Dirschau, Germany (now Tczew, Poland). Widely considered the father of photojournalism, he began creating photo essays in Berlin during the ...

luminosity

(Encyclopedia)luminosity, in astronomy, the rate at which energy of all types is radiated by an object in all directions. A star's luminosity depends on its size and its temperature, varying as the square of the ra...

horizon

(Encyclopedia)horizon, in astronomy, roughly circular line bounding an observer's view of the surface of the earth where the sky and earth seem to meet. This is the visible horizon. At sea the visible horizon is a ...

sudoku

(Encyclopedia)sudoku or su doku so͞odōˈko͞o [key] [Jap.,=single number], a number puzzle consisting, in its classic form, of a square divided into nine squares, with each smaller square divided into nine boxes,...