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Anemometer - A Weather Guide Definition

From , former About.com Guide

Cup Anemometer

Wind speed is measured when the force of the winds causes the cups to rotate.

NOAA Photo Library
Definition: The name given for any instrument used to measure wind speed. The simplest form is a cup anemometer which rotates faster with increased wind speed. John T. R. Robinson is credited with the invention of the hemispherical cup anemometer in 1846.
Pronunciation: (ann-ah-MOM-et-er)
Common Misspellings: anamometer

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