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international date line
(Encyclopedia) international date line, imaginary line on the earth's surface, generally following the 180° meridian of longitude, where, by international agreement, travelers change dates. Traveling…Makkah Royal Clock Tower
(Encyclopedia) Makkah Royal Clock Tower: see Abraj Al-Bait.clepsydra
(Encyclopedia) clepsydraclepsydraklĕpˈsĭdrə [key] or water clock, ancient device for measuring time by means of the flow of water from a container. A simple form of clepsydra was an earthenware…Bürgi, Joost
(Encyclopedia) Bürgi, Joost or Jost, 1552–1632, Swiss mathematician and instrument maker. As the official clockmaker (1579–92) to Duke Wilhelm IV of Hesse-Kassell, he developed the first clock with a…Big Ben
(Encyclopedia) Big Ben, the bell in the Parliament tower (Westminster Palace), London, England. It was named for Sir Benjamin Hall, commissioner of works when the bell was installed in 1856. The name…Sara Teasdale: Eight O'Clock
Eight O'ClockSupper comes at five o'clock, At six, the evening star, My lover comes at eight o'clock — But eight o'clock is far.How could I bear my pain all day Unless I watched to see The…Ctesibius
(Encyclopedia) CtesibiusCtesibiustĭsĭbˈēəs [key], fl. 2d cent. b.c., Alexandrian Greek inventor. He reputedly was the first to discover and apply the expansive power of air as a motive force. Among…pendulum
(Encyclopedia) pendulum, a mass, called a bob, suspended from a fixed point so that it can swing in an arc determined by its momentum and the force of gravity. The length of a pendulum is the…Flanagan, John
(Encyclopedia) Flanagan, JohnFlanagan, Johnflănˈəgən [key], 1865–1952, American sculptor and medalist. In 1932 he designed the George Washington silver quarter. In addition to medals and plaquettes,…Gouthière, Pierre
(Encyclopedia) Gouthière, PierreGouthière, Pierrepyĕr g&oomacr;tyĕrˈ [key], 1732?–c.1813, French metalworker. The greatest artist of ornamental bronzes of the period of Louis XVI, he produced a…Trending
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