Recent innovations in light emitting diodes (LEDs) have improved the energy efficiency of streetlights, but, until now, their glow still wastefully radiated beyond the intended area. A team of researchers has developed a new lighting system design that harnesses high-efficiency LEDs and ensures they shine only where they're needed, sparing surrounding homes and the evening sky from unwanted illumination.
http://www.sciencedaily.com/releases/2013/04/130424103130.ht
(1)(1)+60X3+60+17.jpg)
0 comments:
Post a Comment