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Royal Greenwich Observatory
(Encyclopedia)Royal Greenwich Observatory, astronomical observatory established in 1675 by Charles II of England at Greenwich and known as the Royal Observatory. It moved during 1948–57 to Herstmonceux Castle, Su...Rodgers, Jimmie
(Encyclopedia)Rodgers, Jimmie (James Charles Rodgers), 1897–1933, American singer, guitarist, and songwriter often called “the father of country music,” b. Meri...standard time
(Encyclopedia)standard time, civil time used within a given time zone. The earth is divided into 24 time zones, each of which is about 15° of longitude wide and corresponds to one hour of time. Within a zone all c...Walker, Alice
(Encyclopedia)Walker, Alice, 1944–, African-American novelist and poet, b. Eatonon, Ga. The daughter of sharecroppers, she studied at Spelman College (1961–63) and Sarah Lawrence College (B.A., 1965). She bring...Struve
(Encyclopedia)Struve shtro͞oˈvə [key], family of astronomers. Friedrich Georg Wilhelm von Struve, 1793–1864, was born in Germany but later lived in Russia. While director (1817–39) of Dorpat Observatory he w...equatorial coordinate system
(Encyclopedia)CE5 Equatorial coordinate system equatorial coordinate system, the most commonly used astronomical coordinate system for indicating the positions of stars or other celestial objects on the celesti...day
(Encyclopedia)day, period of time for the earth to rotate once on its axis. The ordinary day, or solar day, is measured relative to the sun, being the time between successive passages of the sun over a stationary o...sundial
(Encyclopedia)sundial, instrument that indicates the time of day by the shadow, cast on a surface marked to show hours or fractions of hours, of an object on which the sun's rays fall. Although any object whose sha...Greenwich, borough, Greater London, England
(Encyclopedia)Greenwich grĭnˈīj, grĕnˈ– [key], inner borough of Greater London, SE England, on the Thames River. ...time , sequential arrangement of all events
(Encyclopedia)time, sequential arrangement of all events, or the interval between two events in such a sequence. The concept of time may be discussed on several different levels: physical, psychological, philosophi...Browse by Subject
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