Barometers work on the principle that the air pressure can change. High air pressure tends to indicate fair weather, and low air pressure can indicate poor...
English astronomer John Robinson invented the anemometer in 1846. Anemometers measure wind speed and have become one of the essential tools for weather forecasting.
Thermometers measure temperature. Daniel Fahrenheit is credited with the invention of the first thermometer, which was constructed using glass and mercury.
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