Here’s a vertical axis wind turbine called “Harmony” whose uniqueness, according to its inventor, is that its operator can open or close to cover more or less area. He erroneously believes that “for every wind speed, there is an optimum …
Here’s a vertical axis wind turbine called “Harmony” whose uniqueness, according to its inventor, is that its operator can open or close to cover more or less area. He erroneously believes that “for every wind speed, there is an optimum …
