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Rutherfurd, Lewis Morris

(Encyclopedia)Rutherfurd, Lewis Morris rŭᵺˈərfərd [key], 1816–92, American physicist, b. New York City, grad. Williams, 1834. From 1837 to 1849 he practiced law. Rutherfurd studied and experimented in celes...

klezmer

(Encyclopedia)klezmer klĕzˈmər [key], form of instrumental folk music developed in the Eastern European Jewish community. The style had its beginnings in the Middle Ages; its name is a Yiddishized version of the...

prospecting

(Encyclopedia)prospecting, search for mineral deposits suitable for mining. Modern prospecting has replaced earlier methods based on chance or superstition (e.g., use of the divining rod) with others based on a sci...

toccata

(Encyclopedia)toccata təkäˈtə, tō– [key] [Ital.,=touched], type of musical composition. Early examples were written for various instruments, but the best-known form of toccata originated about the beginning ...

shawm

(Encyclopedia)shawm shôm [key], double-reed woodwind instrument used in Europe from the 13th through the 17th cent. The term denotes a family of instruments of different sizes. The shape and tone of the soprano sh...

geophysics

(Encyclopedia)geophysics, study of the structure, composition, and dynamic changes of the earth, its atmosphere, hydrosphere and magnetosphere, based on the principles of physics. The term was probably first used i...

negotiable instrument

(Encyclopedia)negotiable instrument, bill of exchange, check, promissory note, or other written contract for payment that may serve as a substitute for money. It is simple in form and easy to transfer. Transfer of ...

zither

(Encyclopedia)zither zĭthˈər [key], stringed musical instrument, derived from the psaltery and the dulcimer. It has a flat sound box over which are stretched from 30 to 45 strings; these are plucked with the fin...

flight simulator

(Encyclopedia)flight simulator, device providing a controlled environment in which a flight trainee can experience conditions approximating those of actual flight. A simulator generally consists of an enclosure hou...

Brashear, John Alfred

(Encyclopedia)Brashear, John Alfred brəshērˈ [key], 1840–1920, American maker of scientific instruments and educator, b. Brownsville, Pa. A mechanic by trade, he taught himself the art of making lenses and mir...