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Anville, Jean Baptiste Bourguignon d'

(Encyclopedia) Anville, Jean Baptiste Bourguignon d'Anville, Jean Baptiste Bourguignon d'zhäN bätēstˈ b&oomacr;rgēnyôNˈ däNvēlˈ [key], 1697–1782, French geographer and cartographer. His maps of…

direction finder

(Encyclopedia) direction finder, electronic device used to determine the position of a ship or aircraft. In a simple direction finder a radio receiver is equipped with a revolving directional antenna…

chronometer

(Encyclopedia) chronometerchronometerkrənŏmˈətər [key], instrument for keeping highly accurate time, used especially in navigation. Before the advent of radio time signals it was the only device that…

vernier

(Encyclopedia) vernierverniervûrˈnēr [key], auxiliary scale, either straight or an arc of a circle, designed to slide along a fixed scale. Its unit divisions, usually smaller than those on the fixed…

Roberts, Kenneth Lewis

(Encyclopedia) Roberts, Kenneth Lewis, 1885–1957, American author, b. Kennebunk, Maine, grad. Cornell, 1908. Well known as staff correspondent for the Saturday Evening Post and as an author of travel…

Stuart, James

(Encyclopedia) Stuart, James, 1713–88, English architect, archaeologist, and painter. After working his way to Rome in 1742, Stuart accompanied Nicholas Revett on an archaeological expedition to…

Lekain

(Encyclopedia) LekainLekainləkăN [key], 1728–78, French actor, whose original names was Henri Louis Cain. In 1750 he made his debut at the Comédie Française and became a protégé of Voltaire. Together…

Guido of Siena

(Encyclopedia) Guido of SienaGuido of Sienasēĕnˈə [key], fl. 13th cent., Italian painter. All that is known of him is an inscription on a large and almost completely repainted Virgin and Child…

fifth force

(Encyclopedia) fifth force, postulated fifth basic force of nature (the four known forces of nature are gravity, electromagnetism, and the strong and weak interactions). Proposed in 1986 to account…

Richardson, Henry Handel

(Encyclopedia) Richardson, Henry Handel, pseud. of Ethel Richardson Robertson, 1870–1946, Australian novelist, b. Melbourne. Her years of study at the Presbyterian Ladies' College, Melbourne, were…