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+ - Driving Force Behind Alkali Metal Explosions Discovered->

Submitted by Kunedog
Kunedog writes: Years ago, Dr. Philip E. Mason (aka Thunderf00t on Youtube) found it puzzling that the supposedly "well-understood" explosive reaction of a lump of sodium (an alkali metal) dropped in water could happen at all, given such a limited contact area on which the reaction could take place. And indeed, sometimes an explosion did fail to reliably occur, the lump of metal instead fizzing around the water's surface on a pocket of hydrogen produced by the (slower than explosive) reaction, thus inhibiting any faster reaction of the alkali metal with the water. Mason's best hypothesis was that the (sometimes) explosive reactions must be triggered by a Coulomb explosion, which could result when sodium cations (positive ions) are produced from the reaction and expel each other further into the water.

This theory is now supported by photographic and mathematical evidence, published in the journal Nature Chemistry. In a laboratory at Braunschweig University of Technology in Germany, Mason and other chemists used a high-speed camera to capture the critical moment that makes an explosion inevitable: a liquid drop of sodium-potassium alloy shooting spikes into the water, dramatically increasing the reactive interface. They also developed a computer simulation to model this event, showing it is best explained by a Coulomb explosion.

The Youtube video chronicles the evolution the experimental apparatuses underwent over time, pursuant to keeping the explosions safe, contained, reliable, and visible.

Link to Original Source

+ - OneRNG open source hardware entropy genrator->

Submitted by taniwha
taniwha writes: Moonbase Otago is pleased to announce its Kickstarter campaign for OneRNG — an open source hardware entropy generator, is already 3/4 funded after 3 days.

OneRNG is a USB key in the same form factor as a USB flash drive, it's an entropy generator, it makes random bitstreams suitable for feeding to your computer's encryption systems to make better and faster keys to make interception of your communications more difficult. It has two entropy sources, an avalanche diode and an RF noise source, either or both can be used

OneRNG is also open hardware, that means all of the design, both hardware and software, is Open Source — you can inspect the hardware and software to make sure there is nothing hidden that stops it from functioning as promised. It also means that you can inspect a unit after shipping to make sure it has not been tampered with, both by lifting its lid to look at the components, and by inspecting the embedded firmware both to make sure that it contains what you think it does and also that it is cryptographically signed with a valid key.

Because you don't truly own your own hardware unless you can reprogram it we're also offering device programmers for those who want to take the existing software and make it better or their own.

https://www.kickstarter.com/pr...
http://www.onerng.info/

Link to Original Source

+ - Ask Slashdot: Can some of us get together and rebuild this community? 21

Submitted by wbr1
wbr1 writes: It seems abundantly clear now that Dice and the SlashBeta designers do not care one whit about the community here. They do not care about rolling in crapware into sourceforge installers. In short, the only thing that talks to them is money and stupid ideas.

Granted, it takes cash to run sites like these, but they were fine before. The question is, do some of you here want to band together, get whatever is available of slashcode and rebuild this community somewhere else? We can try to make it as it once was, a haven of geeky knowledge and frosty piss, delivered free of charge in a clean community moderated format.
Idle

Hand Written Clock 86

Posted by samzenpus
from the up-to-the-minute dept.
a3buster writes "This clock does not actually have a man inside, but a flatscreen that plays a 24-hour loop of this video by the artist watching his own clock somewhere and painstakingly erasing and re-writing each minute. This video was taken at Design Miami during Art Basel Miami Beach 2009."
Wireless Networking

Netgear WNR3500L Open Source Router Announced 300

Posted by kdawson
from the still-making-lemonade dept.
MyOpenRouter writes "Netgear has announced the WNR3500L, a brand new, open source, wireless-N gigabit router customizable with third party firmwares. MyOpenRouter is the dedicated source for Netgear open source routers, with the full scoop including a review with screenshots, how-to's, tutorials, firmware downloads, etc. Here's a review and the downloads page." The router can run popular open source firmware including DD-WRT, OpenWRT. and Tomato. It will list for $140.
Power

Dow Chemical Rolling Out Solar Shingles Next Year 168

Posted by ScuttleMonkey
from the one-more-thing-to-break dept.
Several users wrote to tell us that Dow Chemical plans on selling solar shingles as early as next year. The solar version can be integrated with normal asphalt shingling and will be introduced in 2010, with a wider roll-out scheduled for 2011. "The shingle will use thin-film cells of copper indium gallium diselenide (CIGS), a photovoltaic material that typically is more efficient at turning sunlight into electricity than traditional polysilicon cells. Dow is using CIGS cells that operate at higher than 10 percent efficiency, below the efficiencies for the top polysilicon cells -- but would cost 10 to 15 percent less on a per-watt basis."
Patents

WARF and Intel Settle Patent Suit Over Core 2 Duo 79

Posted by ScuttleMonkey
from the with-a-bat'leth dept.
reebmmm writes "The Wisconsin Alumni Research Foundation (WARF) and Intel have settled their patent suit over technology developed by Gurindar Sohi, a computer science professor at the University of Wisconsin — Madison. Professor Sohi developed technology that was ultimately patented by WARF using money he received from Intel. Last month, Judge Barbara Crabb found that the funding agreement was ambiguous, but that e-mails revealed that the money was an unrestricted gift and carried with it no obligation to license or assign any inventions to Intel. Trial was scheduled to begin today. The terms of the settlement were not disclosed."

Comment: HomeBrew! (Score 4, Insightful) 272

by strange_tractor (#27683819) Attached to: Piracy and the PSP

I bought my PSP in order to have something to do on my daily commute, I thought I'd play games on it, I played through God Of War, and a few others, and started to realise that nothing came close to GoW in terms of fun, so it languished as a portable mp3 and aac player for a while

I ended up sticking hacked firwmare on it just to see what all the fuss was about, and now I can use it to play just about any music and low enough spec video, as an ebook reader and a GPS unit, hasen't seen a game for probably 6 months.

If Sony had this sort of stuff built in, it'd probably sell a bit better.

My computer can beat up your computer. - Karl Lehenbauer

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