Exciting news in the world of green energy and living! Tesla just announced their new solar roofing tiles. They are as attractive as slate and lower cost than a traditional roof when combined with projected utility bill savings.
"Tesla Turbine Operation" - Rather than using blades and friction, the Tesla Turbine uses parallel, closely spaced disks that tap viscosity. Aerodynamic skin adhesion effect resists fluid or gas flow between plates, resulting in energy transfer to the shaft. The technology has been proven to work but is yet to break into marketplace in a cost-effective version.