Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror
×
Government

MIT Inches Closer To ARC Reactor Despite Losing Federal Funding (computerworld.com) 182

Lucas123 writes: Experimenting with a fusion device over the past 20 years has edged MIT researchers to their final goal, creating a small and relatively inexpensive ARC reactor, three of which would produce enough energy to power a city the size of Boston. The lessons already learned from MIT's even current Alcator C-Mod fusion device — with a plasma radius of just 0.68 meters — have enabled researchers to publish a paper on a prototype ARC that would be the world's smallest fusion reactor but with the greatest magnetic force and energy output for its size. The ARC would require 50MW to run while putting out about 200MW of electricity to the grid. Key to MIT's ARC reactor would be the use of a "high-temperature" rare-earth barium copper oxide (REBCO) superconducting tape for its magnetic coils, which only need to be cooled to 100 Kelvin, which enables the use of abundant liquid nitrogen as a cooling agent. Other fusion reactors' superconducting coils must be cooled to 4 degrees Kelvin. While there remain hurdles to overcome, such as sustaining the fusion reaction long enough to achieve a net power return, building the ARC would only take 4 to 5 years and cost about $5 billion, compared to the International Thermonuclear Experimental Reactor (ITER), the world's largest tokamak fusion reactor due to go online and begin producing energy in 2027.
Transportation

How Amazon's Drone Deliveries Will Work (yahoo.com) 177

An anonymous reader writes: In a new interview, Amazon has revealed details of the drone delivery program they're building out. VP Paul Misener said, "Prime Air is a future delivery service that will get packages to customers within 30 minutes of them ordering it online at Amazon.com. The goals we've set for ourselves are: The range has to be over 10 miles. These things will weigh about 55 pounds each, but they'll be able to deliver parcels that weigh up to five pounds. It turns out that the vast majority of the things we sell at Amazon weigh less than five pounds." They haven't set pricing yet, but deliveries will follow the same protocols that trucks do now — if you're not home, it'll be left on your doorstep or in your yard. The company is developing different kinds of drones to service different climates. They also expect the regulatory issues to dissipate once they can demonstrate how safe the drones are. Amazon anticipates the vast majority of drone flying to be done between altitudes of 200ft and 400ft.

Comment Re:Economic Change (Score 2) 344

God has promised not to destroy the planet again until the second coming. Ie, no more global deluge

Important Theology Nitpick: the actual promise is that God will not destroy the world via water/flood again. This doesn't mean that He wouldn't use other means, just not *that*.

Back to the rest of the conversation...

The Military

ISIS's Hunt For a Bogus Superweapon 330

schnell writes: The New York Times Magazine has a fascinating story about ISIS efforts to get their hands on a mysterious and powerful superweapon called Red Mercury. The problem is that by consensus among scientific authorities, Red Mercury doesn't exist. And yet that hasn't stopped the legend of Red Mercury, touted by sources from Nazi conspiracy theorists to former Manhattan Project scientists, as having magical properties. Middle East weapons traders have even spun elaborate stories for its properties (ranging from thermonuclear explosive properties to sexual enhancement) and origins and sources (from Soviet weapons labs to Roman graveyards). What can account for the enduring myth of Red Mercury — is it rampant scientific illiteracy, the power of urban legend and shared myth, or something else?
Security

Researchers: Thousands of Medical Devices Are Vulnerable To Hacking 29

itwbennett writes: At the DerbyCon security conference, researchers Scott Erven and Mark Collao explained how they located Internet-connected medical devices by searching for terms like 'radiology' and 'podiatry' in the Shodan search engine. Some systems were connected to the Internet by design, others due to configuration errors. And much of the medical gear was still using the default logins and passwords provided by manufacturers. 'As these devices start to become connected, not only can your data gets stolen but there are potential adverse safety issues,' Erven said.
Security

TSA Luggage Lock Master Keys Are Compromised 220

An anonymous reader writes: As the FBI demand encryption master keys for Apple, Microsoft and Google made devices, photographs of the master keys for the TSA Travel Sentry suitcases have now been published in multiple places online (more links in later articles). Cory Doctorow points out this makes it much easier for thieves to open luggage undetectably, without leaving any signs of lock picking. Whilst many have argued that the locks aren't designed to provide real security, the most important thing is that this shows the risk of backdoors in security systems, especially since the TSA has not given any warning about this compromise, which seems to have occurred in 2014 or earlier.
Software

Ask Slashdot: What Windows-Only Apps Would You Most Like To See On Linux? 889

An anonymous reader writes: With all the recent brouhaha about Windows 10 privacy violations and forced updates, I'm one of those that wants to thank Microsoft very gently, while taking it by the hand, and slamming the door behind it for good. Fortunately for me, I don't use any special software that is tied to Windows, except games, of course. One program I would really miss though is Total Commander file manager, which is basically my interface to the whole OS. So, I know there are Linux alternatives, but which one is the best? Also, I currently use PaleMoon fork of Firefox as my main browser, but there doesn't seem to be a Linux variant. What other software would you want to transplant to Linux, if any?
Communications

The Speakularity, Where Everything You Say Is Transcribed and Searchable 74

An anonymous reader sends an article from Nautilus about the possible future of speech recognition software. Today, hundreds of millions of people are walking around with devices that can not only record sound, but also do a decent job of turning spoken word into searchable text. The article makes the case that the recording and transcription of normal conversation will become commonplace, sooner or later. Not only would this potentially make a lot more interesting discussion available beyond earshot, but it could also facilitate information retrieval on a personal level.

The article makes an analogy with email — right now, if you communicated with somebody through email a decade ago, you don't have to remember the specifics — as long as you didn't delete it or switch email providers, you can just search and look at exactly what was said. Of course, the power of such technology comes with trade-offs — not only would we be worried about the obvious privacy issues, but many people may feel restricted by always "performing" for the microphones. Some researchers also worry that if we have technology to remember for us, we'll put much less effort into remembering things ourselves.
Shark

Boeing Demonstrates Drone-Killing Laser 125

An anonymous reader writes: Boeing has successfully tested a new weapon system that tracks unmanned aircraft and shoots them down with a laser. The system is surprisingly small — it can be transported in a few medium-sized boxes, and two techs can set it up in minutes. The laser needs just a few seconds of continuous [contact] to set a drone aflame, and the tracking gimbal is precise enough to target specific parts of a drone. "Want to zap the tail so it crashes and then you can go retrieve the mostly intact drone and see who is trying to spy on you? Can do. Think it's carrying explosives and you want to completely destroy it? No problem." The laser is controlled with custom targeting software that runs on a laptop, with help from an Xbox 360 controller. Boeing expects the laser system to be ready for sale in the next year or two.
Google

Google May Try To Recruit You For a Job Based On Your Search Queries 182

HughPickens.com writes: If Google sees that you're searching for specific programming terms, they may ask you to apply for a job as Max Rossett writes that three months ago while working on a project, he Googled "python lambda function list comprehension." The familiar blue links appeared on the search page, and he started to look for the most relevant one. But then something unusual happened. The search results split and folded back to reveal a box that said "You're speaking our language. Up for a challenge?" Clicking on the link took Rossett to a page called "foo.bar" that outlined a programming challenge and gave instructions on how to submit his solution. "I had 48 hours to solve it, and the timer was ticking," writes Rossett. "I had the option to code in Python or Java. I set to work and solved the first problem in a couple hours. Each time I submitted a solution, foo.bar tested my code against five hidden test cases."

After solving another five problems the page gave Rossett the option to submit his contact information and much to his surprise, a recruiter emailed him a couple days later asking for a copy of his resume. Three months after the mysterious invitation appeared, Rossett started at Google. Apparently Google has been using this recruiting tactic for some time.
Transportation

Epic Mega Bridge To Connect America With Russia Gets Closer To Reality 465

Sepa Blackforesta writes: A plan for an epic bridge connecting Russia's easternmost border with Alaska's westernmost border could soon be a reality, as Russia seeks to partner with China. Sijutech reports: "If this mega bridge come to reality, it would be Planet Earth’s most epic mega-road trip ever. The plans have not been officially accepted since specific details of the highway still need to be discussed, including the large budget. Allegedly the plan will cost upwards in the trillions of dollars range."
Japan

Japanese Scientists Fire the Most Powerful Laser On the Planet 117

Sepa Blackforesta writes: Scientist from University of Osaka claim have fired the world's most powerful laser. The beam was intact for 2-petawatt, pulse lasted just one picosecond. While it produced a huge amount of power, the energy required for the beam itself is equivalent to that needed to power a microwave for two seconds. An associate professor of electrical engineering at Osaka University Junji Kawanaka says “With heated competition in the world to improve the performance of lasers, our goal now is to increase our output to 10 petawatts.”

Slashdot Top Deals

"The medium is the massage." -- Crazy Nigel

Working...