Those that spin and produce electricity in the meadows are called windmills.
First of all, we must clarify one point: what is powered by the wind is not the generator, but the windmill, or the wind turbine. Then turn on the generator.
How to turn a windmill is actually not a very complicated thing. Wind turbines have blades, blades that look like airplane wings. Because the blade has a certain angle of attack. Once the wind passes over the blade, the flow speed will be different due to the different lengths of the two ends of the blade. There is a theorem in physics. The greater the fluid velocity, the lower the pressure will be. , due to the different gas flow speeds on the two sides, a gap is formed on one side. When the pressure is high and the pressure is low on one side, the windmill rotates.