Word: microwatts
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Dates: during 2000-2009
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...principle behind one of the most innovative forms of energy-scavenging: rain-harvesting. Researchers led by Jean-Jacques Chaillout at France's Atomic Energy Commission found that a 25-micrometer-thick strip of piezoelectric material (the diameter of a thin strand of human hair) could produce about 1 microwatt per raindrop. That's barely noticeable, but it could be enough to power environmental sensors, especially in areas where condensation is constant--like the inside of a nuclear power plant's cooling towers. "When you add up all the materials and costs in powering, battery production and charging you save with...
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