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Power Felt generates electricity from body heat
Some day, your jacket may be able to power your iPod ... and no, I'm not talking about piezoelectric fabrics (which generate electricity from movement-caused pressure), nor am I talking about photovoltaic materials , although both of those could probably do the job. Instead, your jacket might be made out of a new thermoelectric material called Power Felt, that converts temperature differences into electrical voltage - in the case of the jacket, the difference between its wind-cooled exterior and its body-warmed lining might be all that was needed. Power Felt was created by a team of researchers at North Carolina's Wake Forest University, led by graduate student Corey Hewitt. The material is made up of carbon nanotubes contained within flexible plastic fibers, and reportedly feels like regular felt.Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2012 March 12 The Scale of the Universe - Interactive Flash Animation Credit & Copyright: Cary & Michael Huang Explanation: What does the universe look like on small scales?

