So, how did the wind come from? It turns out that wind is the result of air movement. The air around us is full, and the air keeps moving, so the wind is formed. In other words, when the air on the land is heated and moves upward quickly, the air in the high air increases, forming a high pressure; At low altitude, due to the reduction of air, a low pressure is formed. Just as water flows downward, air also flows from high pressure area to low pressure area, forming wind, also called atmospheric circulation. The greater the pressure difference between the high pressure area and the low pressure area, the greater the wind force. The smaller the pressure difference, the smaller the wind force. In order to distinguish the wind power, beaufort, a British naval officer, compiled a wind power scale, which divided the wind power into twelve grades. The higher the level, the greater the destructive power. Twelve winds are very rare, which can destroy a large number of buildings, uproot trees and trigger a tsunami as high as ten meters, affecting hundreds to thousands of kilometers of sea areas.
To this end, I did a small experiment: first, I found a balloon and inflated it with a pump. When I released the opening of the balloon, the air blew out quickly, bringing out waves of wind. In my life, I found that as soon as the window of the room was closed, I quickly closed it. It seemed that the door suddenly encountered a layer of gas when it was about to touch the doorframe, which slowed down and blew out waves of wind. After the door was closed, the window also "knocked". It may be that the door suddenly closes and the indoor air pressure rises, and the air will be released. Therefore, when the door touches the door frame, the air close to the door passes through the gap between the door and the door frame, and then the air pressure drops again. The window jitter may be due to the sudden increase in air pressure and the air touching the window. These two experiments prove that the air in the high pressure area will flow to the low pressure area, and the air pressure difference is closely related to the wind force.
The wind is endless, which is simply one of the cheapest and richest resources in the world.
Wind has many advantages, among which the greatest potential is that it can be used for wind power generation. It is estimated that the global wind energy available for power generation is about 1000 billion kilowatts, which is not only 10 times of the global hydropower generation, but also three times of the global total annual power generation from coal-fired resources. A big typhoon that once swept through Britain and France destroyed a lot of buildings and trees, and it could generate10 million horsepower in a few seconds! At present, the world's largest windmill power generation capacity is two kilowatts, which can meet the electricity demand of one county or four schools 15% at most.
The wind not only makes people feel refreshed, but also provides almost endless energy for human beings. I hope there are more wind turbines and fewer coal-fired power plants in the world, so that the world will have less carbon dioxide and be greener.