LED Lamp is Powered by Dirt
Sounding like something out of a science fair project, the Soil Lamp runs on mud. Designer Marieke Staps says that the metabolism of biological life within the soil produces enough electricity to power the lamp’s LED bulb. The mud is housed within copper and zinc cells that conduct the electricity produced within the wet soil. Maintenance is simple – pour a little water in the dirt, and the lamp will keep going.
[via MAKE]
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