I'd worry about it acting as sail and flying out of your hands, but in general I... | Hacker News

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user24 on Nov 11, 2010 | parent | context | favorite | on: An umbrella designed using aerodynamic theory to w...

I'd worry about it acting as sail and flying out of your hands, but in general I love it. If I was richer I'd buy one.

jules on Nov 11, 2010 [–]

Have you watched the video? It seems that traditional umbrellas act as sails. This one moves by itself so that the surface that faces the wind is small.

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