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Physicists have developed a way to turn heat into sound and then electricity, suggesting a new way to effectively recycle waste energy.
Symko’s recycling devices are cylinder-shaped “resonators” that fit in the palm of your hand. Each cylinder contains a stack of material with a large surface area—such as metal or plastic plates, or fibers made of glass, cotton or steel wool—placed between cold and hot heat exchangers.
SOURCE:
LiveScience.com