'Thermoelectrics' Could One Day Power Cars

sciencehabit writes: "Fossil fuels power modern society by generating heat, but much of that heat is wasted. Researchers have tried to reclaim some of it with semiconductor devices called thermoelectrics, which convert the heat into power.

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How a Moth's Eye Could Help Improve the Efficiency of Solar Cells

Inspiration lies in the strangest of places—and for researchers at the Agency for Science, Technology & Research in Singapore, that includes the eye of moth. A new antireflective coating inspired by the creature's ocular faculties could help bump up the efficiency of solar cells.Read more...

Controlling Bubbles in Boiling Water Could Make Power Plants More Efficient 

The act of boiling water helps us brew coffee and cook pasta—and it’s also what fuels most of the world’s energy sources. But boiling is really all about the bubbles, and until now their formation had been seen as random and haphazard.

A New Pure Lithium Battery Could Double Your Phone's Life

Virtually all of your gadgets tote lithium ion batteries—but while they're the best you can hope for at the moment, new engineering means that pure lithium batteries are now a possibility, and they could double the life of your phone.Read more...

Apple Patents Power Efficient, Sensor-Filled Noise Cancelling Earbuds

Apple has a couple of new patent applications (via AppleInsider) for headset tech that could drastically reduce the power consumption of noise cancelling earbuds, which could also stop or start music automatically based on whether they’re in or out of your ear.

Simply Layering Solar Cells Could Make Them as Cheap as Natural Gas

It's not uncommon to focus on excotic solutions to making solar power more efficient: new materials, complex tracking systems or unusual physical phenomena. But what about just stacking them on top of each other?Read more...

'Thermoelectrics' Could One Day Power Cars

sciencehabit writes: "Fossil fuels power modern society by generating heat, but much of that heat is wasted. Researchers have tried to reclaim some of it with semiconductor devices called thermoelectrics, which convert the heat into power.

Smaller Chips Make More Mistakes—But That Could Be a Good Thing

When you shrink electronics and their transistors with them, they become more error-prone. Usually, that's compensated for by a boost in voltage—but researchers at MIT think we should embrace the mistakes instead.Read more...

Simply Putting Fins On Tires Could Improve a Vehicle's Fuel Efficiency

Slapping a giant fin on the back of your hand-me-down Corolla isn’t going to make it go any faster. But researchers at Yokohama have found that adding a series of angled fins to a tire can actually help improve a vehicle’s aerodynamics,

This Is the World's Most Efficient Black Silicon Solar Cell

Solar power is getting much, much better . Now, a team of scientists has created the world’s most efficient nanostructured black silicon solar cell—which converts an impressive 22.1 percent of incident light into electricity.Read more...

Report: Green contracts could cut data centre energy use by 40%

According to the Natural Resources Defense Council, many data centre are still hugely inefficient, operating at just 12 to 18 per cent of capacity in most cases. Read more: http://www.itproportal.com/2014/08/27/report-green-contracts-could-cut-data-centres-energy-use-by-40/

Supreme Court Gives Tacit Approval To Warrantless DNA Collection

An anonymous reader writes On Monday, the U.S. Supreme Court refused to review a case involving the conviction of a man based solely on the analysis of his "inadvertently shed" DNA.

What Would Minecraft 2 Look Like Under Microsoft?

An anonymous reader writes "Microsoft spent billions purchasing Mojang, the studio behind the game Minecraft, and while it's unlikely to start work on a sequel anytime soon, rather than continue development of the game, it's worth considering what a Minecraft 2 will look like. After all,

Why We Should Stop Hiding File-Name Extensions

An anonymous reader writes 14 years after the Anna Kournikova virus took advantage of users' ignorance about file-name extensions in order to wreak worldwide havoc,

Khronos Group Announces Vulkan To Compete Against DirectX 12

Phopojijo writes The Khronos Group has announced the Vulkan API for compute and graphics. Its goal is to compete against DirectX 12. It has some interesting features,

Inside the North Korean Data Smuggling Movement

Sparrowvsrevolution writes A new Wired magazine story goes inside the North Korean rebel movement seeking to overthrow Kim Jong-un by smuggling USB drives into the country packed with foreign television and movies. As the story describes, one group has stashed USB drives in Chinese cargo trucks.

NVIDIA Fixes Old Compiz Bug

jones_supa writes NVIDIA has fixed a long-standing issue in the Ubuntu Unity desktop by patching Compiz. When opening the window of a new application, it would go black or become transparent on NVIDIA hardware. There have been bug reports dating back to Ubuntu 12.10 times.

Hillary Clinton Used Personal Email At State Dept., Possibly Breaking Rules

HughPickens.com writes: The NY Times reports that Hillary Rodham Clinton exclusively used a personal email account to conduct government business as secretary of state, according to State Department officials.

Survey: 56 Percent of US Developers Expect To Become Millionaires

msmoriarty writes: "According to a recent survey of 1,000 U.S.-based software developers, 56 percent expect to become millionaires in their lifetime. 66 percent also said they expect to get raises in the next year, despite the current state of the economy.

Survey: 56 Percent of US Developers Expect To Become Millionaires

msmoriarty writes: "According to a recent survey of 1,000 U.S.-based software developers, 56 percent expect to become millionaires in their lifetime. 66 percent also said they expect to get raises in the next year, despite the current state of the economy.

Nokia Had a Production-Ready Web Tablet 13 Years Ago

An anonymous reader writes "Here's another story of a tech gadget that arrived before its time. Nokia created a web-ready tablet running EPOC (later to be renamed as Symbian) thirteen years ago. The tablet was set to go into full production,

POJ 1001 Exponentiation(大数处理) - GLSilence

http://poj.org/problem?id=1001题意:给你一个浮点数,一个整数,求浮点数的整数次方。思路:大数解决,注意处理后面多余的零跟前面多余的零,以及Java科学计数法的问题。 1 import java.math.*; 2 import java.util.Scanner; 3 ...

Valve 虚拟现实头盔曝光 可观战 Dota 2

Valve 虚拟现实头盔曝光,外观设计更精致,Dota 2 画面精细流畅,体验逼真,但不足之处是摘下头盔后会感觉眩晕。

Go 1.4+垃圾收集器计划与路线图

自从Go语言于2009年11月对外宣布以来,短短几年时间,这门语言发展迅猛,性能也在不断提升,而垃圾收集器的改进正是其中的重要一环。Richard L. Hudson近日撰文介绍了Go 1.4+的垃圾收集器的计划和路线图。 By 臧秀涛

以“互动镜子”为概念做虚拟化妆,千妆魔镜可以实现妆后效果的实时预览

爱美的女生可能都有一个困扰:想尝试不同风格的妆容看自己适合哪种,但一来试妆基本局限于专柜,一般都是在手背上试色,无法体验真实效果;二来妆容是个整体概念,需要搭配相应的眼影唇膏才能出彩,一套买下来就花费不少,不合适会很烧钱。

日落奇景:以 H-α 望遠鏡拍攝的超自然景觀

無論是天文愛好者還是一般的人,應該都已經拍攝過不少的日落照片,可能已經不再覺得有什麼神奇之處。不過如果使用不同的天文儀器來探測特別的光譜,效果則會非常不同。繼續閱讀了解更多。

硅谷高管更热衷于对美国社会和政治问题发声

据美国科技新闻网站CNET报道,美国高科技企业领导人利用自己拥有的强大影响力,正更热衷于就美国社会和政治问题发出自己的声音,以促进社会事业甚至要求进行政治改革等。

Photos from the front lines against ISIS

TIKRIT, Iraq—As the sun set, helicopters lifted off the ground and flatbed Toyota Landcruisers carrying Iraqi soldiers rolled past the air base. Airstrikes rumbled in the distance. The security forces had set up their command post about 40 miles south of Tikrit in northern Iraq. See also:

分享经济-炒冷饭系列(五)

分享经济从本质上说是个人物品的所有权向使用权方向上的转变,之所以在airbnb和uber之后火热起来,根本原因在于个人物品这个属性,以往所有权向使用权的转移在公有物品领域和商品领域已经相当成熟,我们日常生活中的所有方面几乎都涉及到了这种模式,不管是住酒店,还是乘公交,不管是看电影还是上网,都可以看成是我们在有偿使用某种资源或者物品,一些公共部门或者商业机构依靠出售使用权而不是所有权来获得收益。

Uber 成风:创业大亨还是大坑?

Uber 已经从一个名词变成了一个动词,尽管在字典里它是一个形容词/副词。就像 “Google” 、“百度”代替了“搜索”,“Uber” 已经被赋予了“搞共享经济”的内涵。

California oil spill cleanup has cost $69 million so far

GOLETA, Calif. — The cost of cleaning up the oil spill that fouled beaches last month on the California coast has reached $69 million so far, an official of the pipeline company said Wednesday.Costs are running at $3 million a day, and there is no timetable for when the cleanup will be complete,

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