a method for detecting and locating objects submerged in water by echolocation.
the apparatus used in sonar.
a communication and position-finding device used in underwater navigation and target detection using echolocation
Short for sound navigation and ranging. A method of detecting, locating, and determining the speed of objects through the use of reflected sound waves. A sound signal is produced, and the time it takes for the signal to reach an object and for its echo to return is used to calculate the object’s distance. The Doppler effect can also be used to determine the object’s relative velocity. Electronic sonar systems are used for submarine navigation and for detecting schools of fish. Some mammals, especially bats, use biological sonar to navigate and detect prey in dark conditions, commonly called echolocation.
The equipment or physiology used in doing this. See also Doppler effect, lidar, radar.
sound navigation and ranging
noun, plural sonarmen. U.S. Navy. 1. a petty officer who operates and maintains sonar.
noun, Music. 1. a composition for one or two instruments, typically in three or four movements in contrasted forms and keys. noun 1. an instrumental composition, usually in three or more movements, for piano alone (piano sonata) or for any other instrument with or without piano accompaniment (violin sonata, cello sonata, etc) See also sonata […]
[suh-nah-tuh duh kah-mer-uh; Italian saw-nah-tah dah kah-me-rah] /səˈnɑ tə də ˈkɑ mər ə; Italian sɔˈnɑ tɑ dɑ ˈkɑ mɛ rɑ/ noun 1. an instrumental musical form, common in the Baroque period, usually consisting of a series of dances.
noun 1. a musical form comprising an exposition, in which the main theme or themes are stated, a development section, a recapitulation of the material in the exposition, and, usually, a coda. noun 1. a musical structure consisting of an expanded ternary form whose three sections (exposition, development, and recapitulation), followed by a coda, are […]