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Prince William Sound

(Encyclopedia) Prince William Sound, large, irregular, islanded inlet of the Gulf of Alaska, S Alaska, E of the Kenai peninsula. It has many bays and good harbors; the large Columbia Glacier flows…

decibel

(Encyclopedia) decibeldecibeldĕsˈəbĕlˌ, –bəl [key], abbr. dB, unit used to measure the loudness of sound. It is one tenth of a bel (named for A. G. Bell), but the larger unit is rarely used. The…

jelly and jam

(Encyclopedia) jelly and jam, gelatinous, sweet food prepared by preserving fresh fruits. Since most fresh fruits contain about 80% water and from 10% to 15% sugar, they are subject to fermentation.…

Croatoan

(Encyclopedia) Croatoan, unexplained letters found (1590) carved on a tree on Roanoke Island off North Carolina by Gov. John White when he returned to the colony from England and discovered the…

Parry Sound

(Encyclopedia) Parry Sound, town (1991 pop. 6,125), S Ont., Canada, on Parry Sound, an inlet of Georgian Bay of Lake Huron. It is an active port and the center of a popular vacation area.

record player

(Encyclopedia) record player or phonograph, device for reproducing sound that has been recorded as a spiral, undulating groove on a disk. This disk is known as a phonograph record, or simply a record…

Georgia, Strait of

(Encyclopedia) Georgia, Strait of, channel, c.150 mi (240 km) long, between the mainland of British Columbia and Vancouver Island, Canada, between Puget Sound and Queen Charlotte Sound. It forms part…

loudspeaker

(Encyclopedia) CE5 Electrodynamic loudspeaker loudspeaker or speaker, device used to convert electrical energy into sound. It consists essentially of a thin flexible sheet called a diaphragm that…

phonetics

(Encyclopedia) phoneticsphoneticsfōnĕtˈĭks, fə– [key], study of the sounds of languages from three basic points of view. Phonetics studies speech sounds according to their production in the vocal…