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it_mf_a t1_j474gtz wrote

I totally saw a video about this. Here it is.

https://www.youtube.com/watch?v=WGKIjojADmg

More blades produce more power and more wind passing across the blades produces more power but more blades blocks more wind from passing. Then math led to the optimum design which you can imagine is what we build as modern wind turbines.

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