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A new kind of camera, which allows you to take the photo now, and focus later at any point you like. There is demo in the web.
The principle is that, you record not the sum of all the light cones, but the individual light ray's vector direction. So that you can focus to any plane by ray tracing method.
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You may have heard a saying that any paper cannot be folded more than 7 times. This video shows that it is possible. In fact, you can fold 11 times! But the paper they are using is as large as a football field, while the original saying is that, you can't fold an A4 paper more than 7 times. It is still an interesting video to watch.
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Folding a square sheet of paper into an arbitrary 3D shape is proved to be NP-hard problem. It is proved by transforming the problem into circle packing problem[1].
[1] arxiv.org/abs/1008.1224: Circle Packing for Origami Design Is Hard
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A great presentation on how to build web applications that attract users and make them feel good.
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一套從賭博看出人性的超正動畫
故事中領會到的真理， 亦可以套用在股市上~ 睇下你領會到D 咩~!
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The locking tab of ethernet cable plugs breaks very easily. This how-to teaches how to replace the locking tab by two nylon cable ties. And you can have a working ethernet plugs in minutes.
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曹仁超：唔再信價值投資法（嗚謝：楓葉資料室Blog)
發表日期：2008－9－10
畢非德（巴菲特）過去成功嘅方法係買入平股等候佢地成長嘅理論已全面受到質疑！因為依家電腦咁普及，資訊咁平（接近免費），價值投資者仲有乜真知灼見？相信買入後持有嘅策略者去年10月至今損失慘重。
信趨勢好過
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And below is the top 10 fibs being told most by men and female:
