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Lytro's "Light Field" Camera Adds Fabled Third Dimension to Photography - Core77

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.

ross_tang 17 Jul 11
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Scientists Use Nanowires to Spy on a Cell’s Inner Life | 80beats | Discover Magazine

Scientists now attach probes into a living cells, and measure electrical currents from inside.

ross_tang 13 Aug 10
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A HP Labs researcher claimed to have proved NP != P

Vinay Deolalikar, HP Labs researcher, claimed to have proved NP not equal to P. The website is his homepage in HP. You can find his 103 paper in pdf here. And he said he will post the final version when ready. Here is his email claiming to have solved the problem:

ross_tang 09 Aug 10
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This post has a impact factor of 104 and 767 pageviews

比亚迪渠道内乱:质量危机厂商压货 经销商退网

我今年初曾預言 BYD 的銷售遲早出問題,而現時來看問題越來越嚴重了。BYD 過去1,2 年的成功好大部分都係因為佢銷售策略做得好成功, 係開拓經銷商、做廣告、花巧的銷售gimmick 同價格都做得比175 同2333 呢類本土車廠做得好。有人講BYD 銷售咁成功係因為佢利用銷售 IT 產品的策略來賣車,因為 IT 產品轉變得快,更講究靈活的銷售策略。

但呢個成功背後係基於壓榨經銷商利益而得來的,而經銷網路又過於泡沫,在一些小鎮可以同時有多間BYD 的經銷商,而我都唔只一次睇到文章講BYD 經銷商有幾難做。可以看出BYD 的高毛利有唔少係來自壓榨經銷商利益,相比之下做吉利的經銷商毛利係咁多間車廠中毛利最高的。中遠期來講,咁壓榨經銷商遲早出事。而且買車同買IT 產品唔同,現時內地流行4S 店,即是賣車的店同時會提供汽車保養和維修服務。當經銷商一死時,就變成銷售同售後服務同時出問題,顧客買車的信心就大減。 ...

__wah__ 11 Jul 10 | 4 comments
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Banana vending machine in japan!

 

Japan starts to sale banana using vending machine! But is there really so much people wanna eat banana? And will the banana go bad too quickly to be sold in the machine? We will see.

sciencolic 07 Jul 10
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中电信秘制通用手机主板计划 - 晨讯首批中标

中国电信酝酿许久的“公板计划”,已然进入实施阶段。龙旗和晨讯科技旗下的希姆通信息技术(上海)有限公司,成为首批中标的手机设计公司。

__wah__ 07 Jul 10
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公司專訪:舜宇三線發展新產品

光學零件及產品生產商舜宇光學(2382)將來的重點會於在高象素手機鏡頭、高端光學分析儀及安防監 控三線發展,集團執行董事兼副總裁孫泱表示,由於將來不斷推出新產品,就算因為遇到成本及銷售等動態因素,都有望令到毛利率保持在21%左右水平。

  孫泱說,今年首四個月各線業務總體符合內部預算,當中高象素手機鏡頭業務有所增長,並且跑贏大市,相對市場增長率為10%。高端光學分析儀部門 則隨着政府更着重食品安全、環保等需求拉動,他期望有關業務佔整體營銷由09年度攤佔10%,提升至今年佔12%至20%的比重。

  在安防監控方面,該公司不單已經成立專門的研發團隊,更花2,000萬元人民幣(下同)成立相關的合營企業。由於有關的產品可以應用在小區、家 ...

__wah__ 18 Jun 10 | 2 comments
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Men tell more lies than women: up to 364 a year

And below is the top 10 fibs being told most by men and female:


 

ross_tang 20 May 10
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ross_tang

Degree in Physics and Mathematics, Master in Physics
香港

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__wah__

You can ask me about investing by starting a question/discussion post here
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sciencolic

I love Physics, Mathematics and Science.
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