The wind speed is measured by which of the following measuring tool……

✅Explanation: An anemometer is a device specifically designed to measure wind speed. It typically consists of rotating cups or propellers that spin faster as the wind speed increases.

📌 Other Options Explanations:
-Wind vane: Used to determine wind direction.
-Stevenson screen: A shelter that houses weather instruments, protecting them from direct sunlight and precipitation.
-Wind gauge: A general term for instruments that measure wind, but not as specific as an anemometer.

🔑Key Points:
-Anemometer: It is an instrument used to measure the speed of the wind, which is a common weather station instrument, or to calculate any form of current gas.
-The term is derived from the Greek word anemos meaning wind which was first explained by Leon Battista Alberti who was an Italian artist and architect in the year 1450.
-He used a mechanical anemometer which was placed perpendicular to the wind direction such that the wind velocity as indicated by the angle of inclination of the disc.

✏️Types of anemometer:
-Cup anemometer: This consists of four hemispherical cups that are mounted on one end of the horizontal arms at equal angles on a vertical shaft. 
-Hotwire anemometer: This consists of thin wire which is heated up to a certain temperature slightly more than atmospheric temperature. 
-Windmill anemometer: This is a mechanical device similar to the regular windmill used to calculate the velocity of the wind. It consists of the axis of rotation running parallel to the direction of the wind. 
-Laser Doppler anemometer: A beam of light is used which is further split into two beams. The velocity is determined by calculating the amount of light that has been reflected.
-Sonic anemometer: Sound waves from this anemometer are used to obtain the speed of the wind. These waves are made to pass through the transducer. These find applications in aircraft and scientific wind turbines.

🛑 🔴Additional information::

✏️Weather Instruments:
-A part of the anemometer called wind vane is used to determine the wind's direction.
-As the wind flows over the windmill, the direction of the wind can be measured with this instrument.
-To measure the amount of water vapour in the atmosphere, i.e. to measure humidity Hygrometer is used.
-The instrument that measures wind speed and wind pressure is the anemometer.
-It counts the number of rotations, which is used to calculate wind speed.
-Rain gauges and snow gauges are the instruments for measuring precipitation, and various types are manufactured according to the purpose at hand.
-Light Speed
-Measured using the Fizeau–Foucault apparatus, which consists of two types of instruments historically used for this purpose.
-The speed of light in a vacuum is approximately 3 × 10^8 m/s.
-Sound Speed
-Measured using a sound velocity probe, a device specifically designed for this purpose.
-The speed of sound in dry air at 20 °C is 343 m/s.
-Temperature
-Measured using a device known as a Thermometer.
-Manometers are devices in which columns of a suitable liquid are used to measure the difference in pressure between two points or between a certain point and the atmosphere.
-An odometer is a device that is used for measuring the distance traveled by a vehicle.
-A barometer is a scientific instrument used to measure atmospheric pressure, also called barometric pressure.