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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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Unblock me is a puzzle game in iphone. It's originated from rush hour. I am interested in solving the board game using computer. I can enter the board configuration into the computer one by one, but I would like to do it automatically. With image processing capatibability in Mathematica, the process can be done rather easily by taking screenshot.
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It is a documentation of MathOO, listing most of its functions and usage.
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Joomgallery is a great extension of Joomla. You can make gallery, upload photos, or even product catalog easily. If you are using Joomgallery 1.5.5.5.2, you may experience problem that the configuration manager of it becomes a blank page. And this how-to teaches you how to solve the problem.
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If you are using Joomla Php on a share host, it is likely that you cannot access the Apache log file. And it will lead to some very difficult to detect problem in your website. Using the method in this website helps you easily solve the problem by logging all the error in the error log file that you can specific the path.
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上期我跟大家談過「拉腰」治坐骨神經痛這個話題，後來有人問我物理治療中是否有一項叫「拉頸」的方法，用作治療頸椎神經線受壓呢？不錯，其實頸椎神經跟坐骨神經一樣，都會因受壓而出現肢體感覺上的錯亂，而他所說的「拉頸」，便是其中一種頗為常用的治療方式。
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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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近日有讀者來信，說她患了腰痛多年，近日痛楚更延至右腿外側，有時甚至擴散至小腿部分，間中還會出現麻痺感。
醫生建議她接受物理治療的「拉腰」療法。到底，「拉腰」是怎樣的治療方式呢？
