Unprecedented wind energy growth — nearly 30 percent per annum over the past five years — is pressuring wind blade manufacturers to turn out more blades, more quickly, at a lower cost. Many ...

a wind turbine (wind power prime mover) to convert wind power into electricity, and most wind turbines have three blades. The physics YouTube channel minutephysics explains why wind turbines have ...

Everyone’s owned a pinwheel at one time or another. I remember riding in the back of my parents’ car, sticking my pinwheel out the window as we traveled down the street. The speed at which the ...