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chronometer

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

Wollaston, William Hyde

(Encyclopedia)Wollaston, William Hyde, 1766–1828, English scientist, M.D. Cambridge, 1793. His wide-ranging scientific achievements include the discovery (1802) of the dark lines (Fraunhofer lines) in the solar s...

Segovia, Andrés

(Encyclopedia)Segovia, Andrés ändrāsˈ sāgōˈvyä [key], 1893–1987, Spanish guitarist. Segovia studied at the Granada Musical Institute. He is famous for his transcriptions of early contrapuntal music, which...

Barrère, Georges

(Encyclopedia)Barrère, Georges zhôrzh bärĕrˈ [key], 1876–1944, French-American flutist and conductor, grad. Paris Conservatory, 1895. In Paris he was solo flutist (1897–1905) of the Colonne Concerts and th...

endoscope

(Encyclopedia)endoscope, any instrument used to look inside the body. Usually consisting of a fiber-optic tube attached to a viewing device, endoscopes are used to explore and biopsy such areas as the colon and the...

Hérault de Séchelles, Marie Jean

(Encyclopedia)Hérault de Séchelles, Marie Jean märēˈ zhäN ārōˈ də sāshĕlˈ [key], 1759–94, French revolutionary. A lawyer, he became a favorite of Queen Marie Antoinette, but nevertheless joined the r...

mandolin

(Encyclopedia)mandolin mănˌdəlĭnˈ, mănˈdəlĭnˌ [key], musical instrument of the lute family, with a half-pear-shaped body, a fretted neck, and a variable number of strings, plucked with the fingers or with...

Marsyas

(Encyclopedia)Marsyas märˈsēəs [key], in Greek mythology, Phrygian satyr. He found the flute that Athena had invented but had thrown away. He became so skillful with the instrument that he challenged the lyre-p...

pamphlet

(Encyclopedia)pamphlet, short unbound or paper-bound book of from 64 to 96 pages. The pamphlet gained popularity as an instrument of religious or political controversy, giving the author and reader full benefit of ...

Rømer, Olaus

(Encyclopedia)Rømer, Olaus or Ole ōläˈo͝os, ōˈlə römˈər [key], 1644–1710, Danish astronomer. He is noted for his discovery that light travels at a definite speed and does not move through space instant...