How many winds are there?

According to various phenomena caused by wind blowing on objects on the ground or water surface, the wind force is divided into 13, with the lowest being 0 and the highest being 12. The names corresponding to each level of wind power are as follows.

0-level wind is called static wind, 1 level wind is called soft wind, 2-level wind is called light wind, 3-level wind is called breeze, 4-level wind is called gentle wind, 5-level wind is called strong wind, 6-level wind is called strong wind, 7-level wind is called strong wind, 8-level wind is called strong wind, 9-level wind is called strong wind, and 165438 level wind is called strong wind.

Extended data:

Instrument and method for measuring wind power level

1, portable anemometer

The device commonly used in this field to measure the magnitude of wind power consists of a sensing part and a counter.

Portable anemometers are generally placed in open areas around without tall obstacles, and their bodies are vertical. Turn off the switch before observation and write down the instructions of the pointer. After a minute or two, turn on the switch and start the stopwatch to record the time. At this point, the observer quickly left the anemometer and stood downwind of the instrument.

After starting the instrument for nearly 100 seconds, the observer quickly approaches the instrument, turns off the switch at 100 seconds, and records the indication of the second hand. According to the two readings before and after, calculate the difference value, indicating the scale number of anemometer pointer during the observation time, and record it in the record table.

2. Wind speed and direction indicator

Some portable anemometers have not only the structural performance of the anemometer mentioned above, but also a wind vane on the shaft to indicate the wind direction. This kind of anemometer is called anemometer.

3, wind speed and wind level alarm

The wind speed alarm is mainly composed of single chip microcomputer, digital display, alarm and wind speed sensor. It can measure the wind speed of 1- 12, quickly display the current wind speed value and wind speed grade, automatically give an alarm when the wind speed is above 6, and automatically cut off the power supply of the controlled equipment when the wind speed is above 8.

Baidu Encyclopedia-Ji Feng