Camera Phones Plaza

Researchers have tested plugging power sources, solar power, wind power and water and they came out with many interesting and useful solution, but none seems to be more innovative than the gravity-powered LED Lamp, project that has won the Greener Gadgets Competition this year.



Clay Moulton, the designer, named the it Gravia, a floor lamp capable of spreading light for up to 200 years, using the human power and the gravity properties.



So how does it work?
Gravia lamp’s weight rises every three hours approximately and as it starts to descend, the download motion converts into torque through a ball screw and this torque is overdriven by a harmonic drive gear hand, while the output spins a set of 12 neodymium magnets.
The spinning powers ten LEDs and the light is of 600-800 lumens, or equal to a 40 Watts incandescent bulb.



"In time, the lamp won’t fade but The LEDs produce a slightly unnatural blue-ish light. As the acrylic ages, it becomes slightly yellowed and crazed through exposure to ultraviolet light,” explains the designer. “The yellowing and crazing will tend to mitigate the unnatural blue hue of the LED light. Thus, Gravia will produce a more natural color of light with age.”
The less nice part of this is the fact that the user has to raise the weight from the bottom to the top of the lamp, every three or four hours.

Click and Zoom:



And this is the designer's description:



You may check also the DORmio Mouse powered by laptop heat, another project that caught the attention of people from Greener Gadets.