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Kitt Peak National Observatory

(Encyclopedia)Kitt Peak National Observatory, astronomical observatory located southwest of Tucson, Ariz.; it was founded in 1958 under contract with the National Science Foundation and is administered by the Assoc...

Miass

(Encyclopedia)Miass mēäsˈ [key], river (c.390 mi/630 km long), W Siberian Russia. It rises in the eastern slopes of the S Urals and flows N and NE past Chelyabinsk into the Iset, a tributary of the Ob River. The...

sackbut

(Encyclopedia)sackbut săkˈbət [key], Renaissance name for the slide trombone, probably derived from the old French word sacqueboute, which means “pull-push.” The instrument achieved its present form in the 1...

bass viol

(Encyclopedia)bass viol bās vīˈəl [key], properly, the largest instrument of the viol family. The term now refers most often to the double bass. ...

sonata

(Encyclopedia)sonata sənäˈtə [key], in music, type of instrumental composition that arose in Italy in the 17th cent. At first the term merely distinguished an instrumental piece from a piece with voice, which w...

crumhorn

(Encyclopedia)crumhorn, J-shaped, double-reed musical instrument used throughout Europe from the 15th cent. through the 17th cent. It possesses a soft, reedy tone. The reed is enclosed by a wooden cap with a hole a...

Graham, George

(Encyclopedia)Graham, George, 1674?–1751, English instrument maker. A clockmaker by trade, Graham designed clocks and watches that earned him membership in the Royal Society and were still manufactured into the p...

celesta

(Encyclopedia)celesta sĭlĕˈstə [key], keyboard musical instrument patented in 1886 by Auguste Mustel of Paris. It consists of a set of steel bars fastened over wood resonators and struck by hammers operated fro...

spectrophotometer

(Encyclopedia)spectrophotometer, instrument for measuring and comparing the intensities of common spectral lines in the spectra of two different sources of light. See photometry; spectroscope; spectrum. ...

Biwa

(Encyclopedia)Biwa bēˈwä [key], lake, c.40 mi (60 km) long and from 2 to 12 mi (3.2–19 km) wide, Shiga prefecture, S Honshu, Japan. The lake, shaped like the biwa, a musical instrument, is the largest in Japan...