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The company that brought us new-fangled vacuum cleaners has turned its attention to fans. Dyson has come out with a bladeless fan. There's an impeller in the base which sends air up into the ring. A slit near the leading edge lets the air out where it flows along the airfoil shape.
Has...
James Dyson, inventor of the bagless vacuum cleaner, explains how to design things:
He built 5127 prototypes. Now if only vacuum cleaners could reproduce with variation.
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