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Electric energy produced from sunlight. This could be via semiconductors, in [photovoltaics]; or through the concentration of solar heat to drive a turbine, as in concentrating solar power [solar-thermal].

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I believe they are called zeerpots. terracotta "or other porous ceramic" pot with another identical but smaller pot inside, fill gap between pots with sand pour just enough water into sand to dampen i …
answered May 17 '16 by Bob