Electricity in the air
Tuesday, July 3, 2012 - 16:30
in Physics & Chemistry
(Phys.org) -- The faster a wind turbine's blade spins, the more energy you can get from it. And the farther you get from the hub, the faster that part of the blade is traveling. So the tips of the blades generate most of the turbine's poweras much as 90 percent, according to David North, an engineer at NASA's Langley Research Center in Virginia.