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Date Submitted: 09/10/2000 14:50:43
Category: / Science & Technology
Length: 2 pages (493 words)
FEEDBACK The exhibition at the New York Hall of Science helped me to explore how machines and living things sense changes in their environment and how they adapt as a result. A wide range of mechanical and biological systems use the same essential method, called "feedback". At the museum I was able to pedal an airplane propeller, direct a chain on a spinning windmill and observe an old-fashion steam engine as I explored self-sensing machines …
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