Living out in west Texas, we have hundreds of wind turbines on the horizon in any given direction. Some days (like today) you could drop a feather straight down without it moving, however all the turbines are spinning. Isn’t that counterproductive?
In: Engineering
They will not spin without wind, but even when it seems perfectly calm at ground level there can be a noticeable breeze once you get up above the surface layer. Turbines are very well balanced and need only a very light breeze to rotate, and it’s very rare to have absolutely no air movement at significant heights above the ground.
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