A Virginia Tech student has created an LED floor lamp that is powered by
gravity, using a weight slide similar to the concept of a grandfather
clock. The lamp puts out the equivalent of a 40-Watt bulb, and lasts four
hours per cycle. The mechanism is expected to last 200 years.
A Virginia Tech student has created a floor lamp powered by gravity.
Clay Moulton of Springfield, Va., who received his Master of Science in
Architecture with a concentration in industrial design from the College of
Architecture and Urban Studies in 2007, created the lamp as a part of this
master’s thesis. The LED lamp, named Gravia, has just won second place in the
Greener Gadgets Design Competition as part of the
Greener
Gadgets Conference in New York City
Moulton estimates that Gravia’s mechanisms will last more than 200 years,
if used eight hours a day, 365 days a year. “The LEDs, which are generally
considered long-life devices, become short-life components in comparison to the
drive mechanisms,” he said.
clipped from: pesn.com 
