Dyson unveils blade-free fan - CNET

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

[escape_artist]

扇風機に羽がないと安全だから、カバーもいらない、省スペース。しかし普通思いつかないなー、すごい。

[inurota]

うお、なんだこれ凄い。羽根の無い扇風機。