The gravity powered floor lamp
Image from Greener Gadgets
Article Summary
Gravia uses a slowly sinking weight to charge 10 high-output LEDs, which fire into the acrylic lens and create a diffuse light output of 600-800 lumens, roughly equal to a 40-watt incandescent bulb. The LEDs are activated only a few seconds after the process begins, and the entire operation is silent.
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rob yates
- November 26, 2009 @ 12:49 UTC