An instrument used to measure wind speed and sometimes wind direction, typically consisting of rotating cups or a propeller that spins faster as wind speed increases. Anemometers are essential tools for weather monitoring and environmental research.
From Greek 'anemos' meaning 'wind' and 'metron' meaning 'measure.' The device was invented in 1450 by Italian architect Leon Battista Alberti, with the modern cup anemometer developed in 1846 by Irish astronomer Thomas Romney Robinson.
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