VORTEX Wind turbines whithout blades.
When a cylindrical structure such as a fireplace, stands in the way of a course of fluid such as wind, a phenomenon called Von Karman vortex street occurs. The fluid forms a cyclic pattern of swirling spiral motion that hits the structure and makes it oscillate at the sides. It has an aerodynamic explanation deciphered by the physicist Theodore von Karman in 1911. (from here . Source: MIT Technology Review – Teresa Alameda)
A technological leap forward and a revoltion in wind energy. A more efficient, cost-effective and environmental friendly way to produce energy.