Thursday, 27. September 2007
Topic: Green - on September 27, 2007 at 12:47:00 PM CEST
A Wind Powered Lantern
When wind speed approaches 3 mph the long helix shape begins to spin and via a patent pending process the breeze powers 20 LEDs that light up in a rotating spiral fashion. Apparently 5-7 mph is the optimum speed, but it can also cope with speeds up to 40 mph. And it doesn’t matter which direction the wind is blowing either.
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