The LED lamp, named Gravia, has just won second place in the Greener Gadgets Design Competition in New York City. Concept illustrations of Gravia depict an acrylic column a little over four feet high. The entire column glows when activated. The electricity is generated by the slow fall of a mass that spins a rotor. The resulting energy powers 10 high-output LEDs that fire into the acrylic lens, creating a diffuse light. The operation is silent and the housing is elegant and cord free — completely independent of electrical infrastructure. The light output will be 600-800 lumens — roughly equal to a 40 watt incandescent bulb over a period of four hours.