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Researchers at the University of Wisconsin-Madison have come up with a way to produce electricity from just about the most renewable source known to man -- his own breath. It's all thanks to a plastic microbelt developed by engineers Xudong Wang, Chengliang Sun and Jian Shi. Made of a material known

3 years ago 0 Comments
October 5, 2011 at 4:02AM
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The brainchild of designer Sang-Kyun Park, LightDrops is an umbrella that uses the piezoelectric effect of polyvinylidene fluoride (PVDF) to transform falling rain into electricity, which is then used to light LEDs installed on the umbrella's underside. The heavier the rain falls (and the harder it

5 years ago 0 Comments