At the Greener Gadgets Conference, a Virginia Tech student showed off a gravity powered LED light, called the Gravia. Working kind of like a grandfather clock that needs to be wound in order to work, the lamp has a weight that's raised up every day. As the day goes on, it slowly lowers, with that movement powering the LEDs.
Gravity Powered Lamp
Gravity Powered Lamp
Gravity Powered Lamp
At the Greener Gadgets Conference, a Virginia Tech student showed off a gravity powered LED light, called the Gravia. Working kind of like a grandfather clock that needs to be wound in order to work, the lamp has a weight that's raised up every day. As the day goes on, it slowly lowers, with that movement powering the LEDs.