Professor Ralph Hollis invented a robot with a special motor that has a very simple drive system about a decade ago called the ballbot. Fast-forward ten years and Hollis' invention called the ...
Engineers at Laing Thermotech Inc., Chula Vista, Calif. (lainginc.com), anticipating a sharp spike in interest in solar-powered systems, have designed the Ecocirc DC pump, a circulation pump that can ...
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