The Beaufort Scale is used internationally to standardize estimates of wind speed.
There are four grades of breeze, ranging from light to strong, and with air speeds ranging from 4 mph (5.6 - 11 km/h) through to 25 - 30 mph (39 - 49 km/h).
Wind covers the range from 31 - 38 mph ( 50 - 61 km/h).
Although originally designed for sea use, the modern descriptions also have land descriptors such as "Whole trees in motion. Effort needed to walk against the wind."
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breeze, zephyr
alee, means toward the wind.
Instruments that measure wind speed include anemometers, which typically consist of rotating cups or blades that turn in the wind. The speed of rotation correlates to the wind speed, providing a measurable output. Another device is the pitot tube, which measures the difference in air pressure created by the wind, allowing for wind speed calculations. Additionally, handheld wind meters are used for portable measurements in various settings.
Anemometer measures the speed of wind/liquid flow.It is a mechanical device with rotary propeller cups that rotate to measure the speed of wind.
Wind speed is measured with a anemometer. The first anemometer was developed in the 15th century. The year it was invented is said to be 1450, by Leon Battista Alberti.