Acoustic energy > Related Articles
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Parent topics
Subtopics
- hearing [r]: Add brief definition or description
- ultrasonography [r]: Diagnostic imaging using acoustic energy, usually above the human hearing range, although the instruments may provide an audible representation for the examiner [e]
- sonar [r]: A contraction of sound navigation and ranging, formally includes the active mode in which a pulse goes out and a receiver measures the echo. Also includes hydrophones or passive, listen-only systems. [e]
Other related topics
- frequency [r]: For a periodic (i.e., repeating) phenomena, the number of repetitions per unit of time, usually one second; measured in Hertz [e]
- transponder [r]: A device, used in navigation, air traffic control, Safety of Life at Sea, and military operations (e.g., Identification-friend-or-foe which, when interrogated by an appropriate radio or radar signal, replies with its identification and other relevant navigation data [e]
- wavelength [r]: For a repeating phenomenon such as a radio signal with a given frequency, the wavelength is the length, in meters, of a single repetition [e]
