China Naming Network - Weather knowledge - How to write strokes in Feng stroke order

How to write strokes in Feng stroke order

The stroke order of the word "风": left, horizontal bent hook/horizontal oblique hook, left, dot.

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Data expansion

Wind is a natural phenomenon caused by air flow. From a scientific point of view, wind often refers to the horizontal movement component of the air, including direction and magnitude, that is, wind direction and wind speed; but for flight, it also includes the vertical movement component, the so-called vertical or lift airflow. Strong winds can move objects and the direction of objects (mass of matter). The wind is moving very fast. The intensity of wind is expressed by wind speed, which is generally measured by wind level or meters per second, and is divided into thirteen levels.

The horizontal movement of air is called wind. Wind is a physical quantity that represents the movement of airflow. It not only has a numerical value (wind speed), but also a direction (wind direction). Therefore wind is a vector quantity. Wind direction refers to the direction the wind is coming from.

The surface wind direction is expressed in 16 directions, and the high-altitude wind direction is usually expressed in azimuth degrees, that is, 0° (or 360°) means due north, 90° means due east, 180° means due south, and 270° means due south. West. Among the 16 directions, the angular difference between each adjacent direction is 22.5°. Wind speed units are commonly expressed in m/s, knot (nautical miles/hour, also known as "knot") and km/h.

Wind direction refers to the direction of airflow, and is often recorded in 16 directions. Wind speed is the horizontal distance that air moves per unit time, measured in meters per second. The horizontal wind speed in the atmosphere is generally 1.0 to 10 meters/second, and typhoons and tornadoes sometimes reach 102 meters/second. The wind speed in farmland can be less than 0.1 meters/second.

There are two types of wind speed observation data: instantaneous value and average value. Generally, the average value is used. Wind measurements are mostly carried out with instruments such as electric anemometers, portable anemometers, dyne anemometers, and thermometers used to measure breezes in farmland. It can also be estimated based on the wind force level table based on the signs of ground objects.