Source: www.engadget.com | Original Post Date: September 30, 2015 –
What you see above may look like an unremarkable slice of electronics, but it can theoretically power a low-energy device forever, and for free. If that sounds like a big deal, well... that's because it is. Drayson Technologies today announced Freevolt, a system that harvests energy from radio frequency (RF) signals bouncing around in the ether and turns it into usable, "perpetual power." Drayson isn't exactly a household name, but the research and development company has a particular interest in energy, especially where all-electric racing is concerned. And now it's developed the first commercial technology that literally creates electricity out of thin air.
