At first glance, James Dyson's latest invention looks like a powerful HD antenna or perhaps a small portal into another world. But in fact, the device, which carries the vaunting title of Dyson Air Multiplier, is something much more common: a fan. What, a fan with no blades? Yes, that's exactly what you're looking at, and what makes the Air Multiplier so hard for people to classify at first. This
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