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That means that although the laser's electrical input is about the amount needed to run a bedside lamp, an individual pulse has an intensity of several million watts.
ECONOMIST: Diamonds
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To fully emulate the human leg will involve motors, the mechanical equivalent of muscles, and electrical sensors that gather the same input as the human nervous system.
CNN: Why Oscar Pistorius deserves to run
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Slices of rat hippocampus were stimulated with electrical signals millions of times, until scientists could be sure which input produced a corresponding output.
BBC: Scientists develop 'brain chip'