LED Gravity Lamp Provides Free Light, Will Outlive You

Posted on Feb 19 2008 - 8:49am by Gadget King
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A Virginia Tech student has invented a floor lamp that runs on gravity. The unit is bit over four feet high and will put out the same amount of light as a 40 watt light bulb for over four hours at a time. The lamp, if run eight hours a day, 365 days a year, will last over 200 years.

To “turn on” the lamp, the user moves weights from the bottom to the top of the lamp. An hour-glass like mechanism is turned over and the weights are placed in the mass sled near the top of the lamp. With the sled gently gliding back down, within a few seconds, the LEDs come on and light the lamp, Moulton said.”

Gravity Lamp

{Via dvice}

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  1. DMiller February 19, 2008 at 3:28 pm -

    Let me know when and where I can buy this!

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