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sonar
(Encyclopedia)sonar sōˈnär [key], device used underwater for locating submerged objects and for submarine communication by means of sound waves. The term sonar is an acronym for sound navigation ranging. The mai...frequency
(Encyclopedia)frequency: see harmonic motion; wave. ...Edmonds
(Encyclopedia)Edmonds, city (2020 pop. 42,853), Snohomish co., NW Wash., a residential suburb of Seattle, on Puget Sound; inc. 1890. There is boatbuilding and the man...Clair, René
(Encyclopedia)Clair, René rənāˈ klâr [key], 1898–1981, French film director, writer, and producer. Beginning as a film critic, Clair first received international attention in the 1930s with his early sound f...Greenwich, town, United States
(Encyclopedia)Greenwich grĕnˈĭch [key], residential town (2020 pop. 63,518), Fairfield co., SW Conn., on ...swim bladder
(Encyclopedia)swim bladder, large, thin-walled sac in some fishes that may function in several ways, e.g., as a buoyant float, a sound producer and receptor, and a respiratory organ. The swim bladder, or air bladde...Hearst, William Randolph
(Encyclopedia)Hearst, William Randolph, 1863–1951, American journalist and publisher, b. San Francisco. A flamboyant, highly controversial figure, Hearst was nonetheless an intelligent and extremely competent new...Madrid, city, Spain
(Encyclopedia)Madrid mədrĭdˈ, Span. mäᵺhrēᵺˈ [key], city (1990 pop. 3,120,732), capital of Spain and of the autonomous community and prov. of Madrid, central Spain, on the Manzanares River. The newest of ...Freeman, Mary Eleanor Wilkins
(Encyclopedia)Freeman, Mary Eleanor Wilkins, 1852–1930, American author, b. Randolph, Mass. Her stories and novels paint a picture of Massachusetts and Vermont still under the influence of Puritanism, in her view...Leibl, Wilhelm
(Encyclopedia)Leibl, Wilhelm vĭlˈhĕlm līˈbəl [key], 1844–1900, German genre and portrait painter. He studied in Munich where numerous painters came under his influence; the “Leibl group” shared his pred...Browse by Subject
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