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velocimeter
[ vee-loh-sim-uh-ter, vel-oh- ]
velocimeter
/ vē′lō-sĭm′ĭ-tər,vĕl′ō- /
- A device that utilizes the Doppler effect to measure the speed of sound in water. Developed by the US Army Corps of Engineers, a velocimeter transmits a pulse of sound through water and measures its echo for changes in either pitch or frequency. Oceanographers employ velocimeters to study the interior structure of breaking waves; they are also used in hydraulic engineering and to study fluid flow.
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Word History and Origins
Origin of velocimeter1
First recorded in 1842; veloci(ty) + -meter
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