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A UK design duo have dreamed up a gravity-powered lamp which could bring light to remote regions of the developing world.
The GravityLight is powered by the gravity which results from filling a bag with rocks or sand and then slowly lowering it toward the ground.
A series of gears inside the light transfers the weight into energy. It takes three seconds to lift, which creates half-an-hour of light on its descent – and for free after the initial cost of buying the lamp.
Originally posted by fluff007
I shall be keeping my eyes on these and may even buy one myself..!
Originally posted by hellobruce
Posted last year...