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討論 新聞 主題﹕Google綠能投資 首購風力發電廠
Google在官方部落格上發表聲明,已出資3880萬美金收購美國二座風力發電廠,這是Google首次直接投資於可再生能源發電廠。Google近年來致力於綠能發展,日前與綠色團體連署,寫信給美國總統歐巴馬,要求開放智慧電表的資訊於網路,方便民眾隨時查詢...

Tommy Chung
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發 表 於: 2010.07.13 11:04:40 AM
文章主題: Re: Google綠能投資 首購風力發電廠
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Tommy Chung
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發 表 於: 2010.07.13 11:09:49 AM
文章主題: Re: Google綠能投資 首購風力發電廠

The Greenest Super-computer On the Planet


This is the Grape-DR, a supercomputer housed in the Department of Information Science at the University of Tokyo. It has 64 Intel Core i7-920 processors and an accelerator chip that can achieve 200 gigaflops with a lightbulb's worth of power.

The Grape-DR topped the Little Green500 List of energy-efficient supercomputers, achieving 815.43 MFLOPS per Watt compared to IBM's second place machine, located in Germany, capable of 773.38 MFLOPS per Watt. Only 775 megaflops per Watt? How embarrassing.

The Grape-DR supercomputer, which in addition to be the greenest is apparently also the messiest, pairs its 64 Core i7 processors with four Grape-DR accelerator chips, each of which consumes only 50 Watts of power. All together the chips improve the efficiency of the supercomputer five fold.

But being the greenest does not mean fastest—the Grape-DR's peak performance is 23.4 TFLOPS, putting it just shy of 500th place on the Top500 list of the world's fastest supercomputers. That's OK, Grape-DR, you're number 1 in Mother Nature's heart. [TechOn via Technabob]
 

但線路不太環保?改用光纖網路應更Super and Greenest

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Tommy Chung
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發 表 於: 2010.07.13 11:12:47 AM
文章主題: Re: Google綠能投資 首購風力發電廠

Boeing's Corpulent Hydrogen-Powered Spy Plane Will Fly at 65,000 Feet For Four Days

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Tommy Chung
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發 表 於: 2010.07.13 11:16:53 AM
文章主題: Re: Google綠能投資 首購風力發電廠

Terahertz Detectors Could See Through Your Clothes From a Mile Away

Someone may soon be able to tell what types material are in your pockets from tens, and possibly thousands, of feet away.

Using terahertz remote sensing, detectors could see through walls, clothing and packaging materials and immediately identify the unique terahertz waves of the materials contained inside, such as explosives or drugs.

Until now, detecting terahertz waves - the portion of the electromagnetic spectrum between infrared and microwave light - hasn't been possible from distances more than inches because the waves are absorbed by ambient moisture in the air, killing the signal.

"A lot of other researchers thought that terahertz remote sensing was mission impossible," said physicist Jingle Liu of Rensselaer Polytechnic Institute, lead author of the study published July 11 in Nature Photonics.

Liu's team solved the problem by not relying on the terahertz waves themselves to generate or carry the signal back to the detector. Instead, they used the reflection created by lasers pointed at the target.

Two lasers at different frequencies aimed at the target together generate a plasma (basically excited, or ionized air). This plasma emits a florescence that is scattered in characteristic ways by the terahertz radiation of the material it hits. The reflection of the florescence is detectable from remote distances

The researchers have tested hundreds of different substances and created a library of terahertz spectra to compare to the signal from the target and instantly identify the material that was hit.

The researchers demonstrated that they could detect the signal from 67 feet away, the length of their laboratory space, but theoretically they could identify materials hundreds of feet or even miles away, Liu said.

"Homeland security and military agencies have been struggling for years to get technology like this," said terahertz expert Abul Azad at Los Alamos National Laboratory. "I think the approach they have revealed is really, really unique."

The first application of this technology will likely be for the remote detection of roadside bombs, also known as improvised explosive devices (IEDs) by the military. Homeland Security and the Defense Department were the primary funders of the research.

Terahertz detectors could also be used for airport security to detect illegal substances hidden in people's clothes. The approach would be less invasive than x-rays, Liu said, because terahertz waves are much lower in energy. It would not reveal anything concealed inside the body, because the terahertz signals cannot go through water, or metal.

Theoretically, Liu said, terahertz remote sensing could also be used identify the composition of an unknown toxic spill in the environment, or the composition of objects in space.

Image: 1) Schematic of the terahertz wave remote sensing technique/Liu. 2) Wikipedia/Tatoute.

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Tommy Chung
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發 表 於: 2010.07.13 11:19:24 AM
文章主題: Re: Google綠能投資 首購風力發電廠

Mirrored Treehouse Hotel Makes You Invisible in the Forest

Mirrored Treehouse Hotel Makes You Invisible in the ForestThis crazy structure is part of the Treehotel, a new hotel in northern Sweden consisting of multiple treehouses all designed my different architects.

That one up there is the Mirrorcube, named thusly because, well, it's a mirrored cube. It allows you to see out from the inside at the forest and animals around it, who won't even know you're there.

Other treehouses include the Cabin, the Blue Cone and the Nest, with the UFO and A Room With a View scheduled to open in October. [Treehotel via BornRich]

(gizmodo)

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Tommy Chung
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發 表 於: 2010.07.13 11:22:16 AM
文章主題: Re: Google綠能投資 首購風力發電廠

Joos Orange Charger Reviewed: Solar-Powered Gadget Charging, For Real

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Tommy Chung
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發 表 於: 2010.07.13 11:27:51 AM
文章主題: Re: Google綠能投資 首購風力發電廠

生技製「玉衣」 涼爽抗酷暑

(自由時報)

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Tommy Chung
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發 表 於: 2010.07.13 11:54:09 AM
文章主題: Re: Google綠能投資 首購風力發電廠

DIY Internet Chess Table makes online matches suddenly awesome

http://www.youtube.com/watch?v=vWxy01oAM68&feature=player_embedded

 

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Tommy Chung
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發 表 於: 2010.07.13 12:00:27 PM
文章主題: Re: Google綠能投資 首購風力發電廠

南科太陽能車站亮相 2010/7/14 啟用

(車站屋頂的太陽能板)

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Adam Chen
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發 表 於: 2010.07.14 09:11:38 AM
文章主題: Re: Google綠能投資 首購風力發電廠

不錯的太陽能陽傘

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Only Chen
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發 表 於: 2010.07.14 09:47:26 AM
文章主題: Re: Google綠能投資 首購風力發電廠

富士通發布新型電子紙門診導引牌



富士通公司不久前面向市場發布了一款新型電子紙門診導引牌。通過連接到醫院的無線通訊系統,這款電子紙導引牌可以為前來診病的患者提供導醫服務。它可以為患者指示醫院地圖,並提供候診信息,還能當作病歷卡使用。只需一張 IC卡,這款電子紙導引牌就可以自動連接到醫院的無線通訊系統裡,進入導航頁面,同時調出病歷卡,完成就醫登記手續。此後,這款電子紙導引牌就會在地圖上顯示使用者當前的位置,並能根據使用者的預約做出提醒,告訴他們是時候接受檢查了。這款電子紙導引牌可以讓患者自由安排時間,不用一直在候診室,無形間也提高醫院的辦公效率。富士通公司稱,這款設備將於 2011年2月正式面世。
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