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They have long been employed in devices like mobile phones to filter electric signals (which can be done by converting electrical into mechanical energy and back again).
ECONOMIST: Acoustic microfluidics
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In May, auto industry officials and the National Highway Traffic Safety Administration (NHTSA) and the Energy Department discussed potential dangers faced by first responders from electrical charges produced by hybrid and electric cars.
CNN: STORY HIGHLIGHTS
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First, by an apprenticeship, or attending other union-employer supported programs like the Energy Workforce Development Program, formed by a consortium of electric utility companies and the International Brotherhood of Electrical Workers.
FORBES: How to Get A Good-Paying Job Without Attending A Four Year College