jackspenn - Slashdot User

Physics Students Devise Concept For Star Wars-Style Deflector Shields 179

Posted by samzenpus on Thursday May 01, 2014 @10:00PM from the stay-on-target dept.

mpicpp (3454017) writes in with good news for everyone worrying about the strength of their shields. "If you have often imagined yourself piloting your X-Wing fighter on an attack run on the Death Star, you'll be reassured that University of Leicester students have demonstrated that your shields could take whatever the Imperial fleet can throw at you. The only drawback is that you won't be able to see a thing outside of your starfighter. In anticipation of Star Wars Day on 4 May, three fourth-year Physics students at the University have proven that shields, such as those seen protecting spaceships in the Star Wars film series, would not only be scientifically feasible, they have also shown that the science behind the principle is already used here on Earth."

The Greatest 'Amateur' Astronomer You've Probably Never Heard Of 37

Posted by samzenpus on Thursday May 01, 2014 @08:30PM from the giving-credit-where-it's-due dept.

StartsWithABang (3485481) writes "From a true dark-sky site, the kind that was available to all of humanity for the first 200,000 years or so of our species' existence, the human eye can discern tens of thousands of stars, detailed features of the Milky Way and a handful of deep-sky nebulae. With the advent of the telescope, our reach into the Universe was greatly enhanced, as the increase in light-gathering power opened up orders of magnitude more stars and nebulae, and even allowed us to see a spiral structure to some nebulae beginning in the 1840s. But in all the time since then, the largest telescope ever developed is not even six times bigger than the largest from nearly 200 years ago. Yet the details we can observe in the Universe today aren't limited by what our eyes can perceive looking through our telescopes at all. The combination of astronomy and photography has changed our understanding of the Universe forever, and we owe the greatest advances to an 'amateur' you've probably never heard of: Isaac Roberts."

Most of What We Need For Smart Cities Already Exists 65

Posted by samzenpus on Thursday May 01, 2014 @07:48PM from the using-what-we-have dept.

An anonymous reader writes "Looking to a day when modern infrastructure is network addressable, Glen Martin considers that, lacking only requisite content and relatively simple augmentation, most of what we need for smart cities already exists: 'Using smart phones, pedestrians could "wake up" the objects by accessing codes generally used by the city to identify street items that required repair. Each bit of infrastructure would make some kind of declamatory statement — sometimes gracious and welcoming, sometimes didactic, sometimes peevish. The "interlocutor" would then respond, and a brief exchange would ensue. The object would then invite the passerby to return for more conversation.'"

Lessig Launches a Super PAC To End All Super PACs 465

Posted by samzenpus on Thursday May 01, 2014 @07:03PM from the biggest-fish dept.

An anonymous reader writes "Lawrence Lessig has announced plans to kickstart a SuperPAC big enough to make it possible to win a Congress committed to fundamental reform by 2016. From the article: 'If you can’t beat them, join them. Then take them down from the inside. That’s the basic idea behind a super PAC launching Thursday that wants to destroy super PACs for good. The Mayday PAC, as it’s called, seeks to raise enough money to sway five House elections in 2014 and elect representatives who have committed to pressing for serious reform of the campaign finance system. If that endeavor—a sort of test case—is successful, the PAC will then try to raise an enormous amount of money for the 2016 cycle—enough, PAC organizers hope, to buy Congress."

NASA Developing Robotic Satellite Refueling System 30

Posted by samzenpus on Thursday May 01, 2014 @06:20PM from the fill-it-up dept.

coondoggie (973519) writes "Refueling aging satellites that were never meant to be refueled is the goal with a emerging NASA system that could save millions. NASA this week said since April 2011, engineers have been working to build robotic satellite servicing technologies necessary to bring in-orbit inspection, repair, refueling, component replacement and assembly capabilities to spacecraft needing aid."

US Should Use Trampolines To Get Astronauts To the ISS Suggests Russian Official 272

Posted by samzenpus on Thursday May 01, 2014 @08:07AM from the space-men-can't-jump dept.

Hugh Pickens DOT Com (2995471) writes "The Washington Post reports that Russia's Deputy Prime Minister Dmitry Rogozin has lashed out again, this time at newly announced US ban on high-tech exports to Russia suggesting that 'after analyzing the sanctions against our space industry, I propose the US delivers its astronauts to the ISS with a trampoline.' Rogozin does actually have a point, although his threats carry much less weight than he may hope. Russia is due to get a $457.9 million payment for its services soon and few believe that Russia would actually give it up. Plus, as Jeffrey Kluger noted at Time Magazine, Russia may not want to push the United States into the hands of SpaceX and Orbital Sciences, two private American companies that hope to be able to send passengers to the station soon. SpaceX and Orbital Sciences have already made successful unmanned resupply runs to the ISS and both are also working on upgrading their cargo vehicles to carry people. SpaceX is currently in the lead and expects to launch US astronauts, employed by SpaceX itself, into orbit by 2016. NASA is building its own heavy-lift rocket for carrying astronauts beyond low-Earth orbit, but it won't be ready for anything but test flights until after 2020. 'That schedule, of course, could be accelerated considerably if Washington gave NASA the green light and the cash,' says Kluger. 'America's manned space program went from a standing start in 1961 to the surface of the moon in 1969—eight years from Al Shepard to Tranquility Base. The Soviet Union got us moving then. Perhaps Russia will do the same now.'"

Graphene Could Be Dangerous To Humans and the Environment 135

Posted by samzenpus on Thursday May 01, 2014 @05:26AM from the keep-out-of-eyes-and-mouth dept.

Zothecula (1870348) writes "It's easy to get carried away when you start talking about graphene. Its properties hold the promise of outright technological revolution in so many fields that it has been called a wonder material. Two recent studies, however, give us a less than rosy angle. In the first, a team of biologists, engineers and material scientists at Brown University examined graphene's potential toxicity in human cells. Another study by a team from University of California, Riverside's Bourns College of Engineering examined how graphene oxide nanoparticles might interact with the environment if they found their way into surface or ground water sources."

Understanding the 2 Billion-Year-Old Natural Nuclear Reactor In W Africa 152

Posted by samzenpus on Thursday May 01, 2014 @03:00AM from the it's-getting-hot-in-here dept.

KentuckyFC (1144503) writes "In June 1972, nuclear scientists at the Pierrelatte uranium enrichment plant in south-east France noticed a strange deficit in the amount of uranium-235 they were processing. That's a serious problem in a uranium enrichment plant where every gram of fissionable material has to be carefully accounted for. The ensuing investigation found that the anomaly originated in the ore from the Oklo uranium mine in Gabon, which contained only 0.600% uranium-235 compared to 0.7202% for all other ore on the planet. It turned out that this ore was depleted because it had gone critical some 2 billion years earlier, creating a self-sustaining nuclear reaction that lasted for 300,000 years and using up the missing uranium-235 in the process. Since then, scientists have studied this natural reactor to better understand how buried nuclear waste spreads through the environment and also to discover whether the laws of physics that govern nuclear reactions may have changed in the 1.5 billion years since the reactor switched off. Now a review of the science that has come out of Oklo shows how important this work has become but also reveals that there is limited potential to gather more data. After an initial flurry of interest in Oklo, mining continued and the natural reactors--surely among the most extraordinary natural phenomena on the planet-- have all been mined out."

British Spy Chiefs Secretly Begged To Play In NSA's Data Pools 43

Posted by samzenpus on Thursday May 01, 2014 @12:33AM from the please-sir-I-want-some-data dept.

Advocatus Diaboli (1627651) writes "Britain's electronic surveillance agency, Government Communications Headquarters, has long presented its collaboration with the National Security Agency's massive electronic spying efforts as proportionate, carefully monitored, and well within the bounds of privacy laws. But according to a top-secret document in the archive of material provided to The Intercept by NSA whistleblower Edward Snowden, GCHQ secretly coveted the NSA's vast troves of private communications and sought 'unsupervised access' to its data as recently as last year – essentially begging to feast at the NSA's table while insisting that it only nibbles on the occasional crumb."

What It's Like To Be the Scientific Consultant For The Big Bang Theory 253

Posted by samzenpus on Wednesday April 30, 2014 @10:00PM from the it's-a-tough-gig dept.

sciencehabit (1205606) writes "Science sits down with David Saltzberg, who's been The Big Bang Theory's one and only science consultant since it premiered. Saltzberg is an astrophysicist at the University of California, Los Angeles. He chats about how the portrayal of science on the show has changed over the years, whether it turns kids away from science, and how you can get your own job as a scientific consultant in Hollywood."

Grading Software Fooled By Nonsense Essay Generator 187

Posted by samzenpus on Wednesday April 30, 2014 @08:34PM from the it-is-good-report dept.

An anonymous reader writes "A former MIT instructor and students have come up with software that can write an entire essay in less than one second; just feed it up to three keywords.The essays, though grammatically correct and structurally sound, have no coherent meaning and have proved to be graded highly by automated essay-grading software. From The Chronicle of Higher Education article: 'Critics of automated essay scoring are a small but lively band, and Mr. Perelman is perhaps the most theatrical. He has claimed to be able to guess, from across a room, the scores awarded to SAT essays, judging solely on the basis of length. (It’s a skill he happily demonstrated to a New York Times reporter in 2005.) In presentations, he likes to show how the Gettysburg Address would have scored poorly on the SAT writing test. (That test is graded by human readers, but Mr. Perelman says the rubric is so rigid, and time so short, that they may as well be robots.).'"

Researchers Find Easy To Exploit Bugs In Traffic Control Systems 50

Posted by samzenpus on Wednesday April 30, 2014 @07:44PM from the red-light-green-light dept.

Trailrunner7 (1100399) writes "It has been a running joke in the tech industry for years that the hacking scenes in movies are, well, a joke. Hackers in hoodies pushing a few keys and taking down the power grid or causing massive traffic pileups by turning all the stoplights green at once. While those scenes provide endless entertainment for security folks, it turns out some of those attacks aren't so far-fetched. Cesar Cerrudo, a researcher and CTO at IOActive, decided to take a look at the security of some of the devices that control traffic lights and electronic signs in many cites around the world, and found that not only were the devices vulnerable to a number of attacks, but they could be exploited quite easily and perhaps could be used to spread malware from device to device. Cerrudo said that the vulnerabilities he identified can be exploited from up to a mile or two away with the right equipment."

SpaceX Looking For Help With "Landing" Video 110

Posted by samzenpus on Wednesday April 30, 2014 @07:00PM from the clean-it-up dept.

Maddog Batty (112434) writes "SpaceX recently made the news by managing to soft land at sea the first stage of rocket used to launch its third supply mission to the International Space Station. Telemetry reported that it was able to hover for eight seconds above the sea before running out of fuel and falling horizontal. Unfortunately, due to stormy weather at the time, their support ship wasn't able to get to the "landing" spot at the time and the first stage wasn't recovered and is likely now on the sea bed. Video of the landing was produced and transmitted to an aeroplane but unfortunately it is rather corrupted. SpaceX have attempted to improve it but it isn't much better. They are now looking for help to improve it further."

Interview: Ask Ben Starr About the Future of Food 137

Posted by samzenpus on Wednesday April 30, 2014 @02:01PM from the ask-me-anything dept.

samzenpus (5) writes "Ben Starr is a chef, travel writer, reality TV star, wine and beer brewer, cheesemaker, and ultimate food geek. Ben traveled all 7 continents in his early 20s, staying with local families and learning to cook the cuisines of the world in home kitchens and local markets. FRANK, his underground Dallas restaurant, has a waitlist of 3,000 and reservations are selected by random lottery. He is a passionate local and sustainable food advocate. Ben is a flag waver for the new generation of chefs who embrace modern technology, and his Camp Potluck feeds hundreds of hungry Burning Man attendees every year. Ben has agreed to put down his chef's knife and answer your questions. As usual, ask as many as you'd like, but please, one question per post."

Submission + - Interview: Ask Ben Starr About the future of food

Submitted by samzenpus on Wednesday April 30, 2014 @11:24AM

samzenpus writes: Ben Starr is a chef, travel writer, reality TV star, wine and beer brewer, cheesemaker,and ultimate food geek. Ben traveled all 7 continents in his early 20s, staying with local families and learning to cook the cuisines of the world in home kitchens and local markets. FRANK, his underground Dallas restaurant, has a waitlist of 3,000 and reservations are selected by random lottery. He is a passionate local and sustainable food advocate. Ben is a flag waver for the new generation of chefs who embrace modern technology, and his Camp Potluck feeds hundreds of hungry Burning Man attendees every year. Ben has agreed to put down his chef's knife and answer your questions. As usual, ask as many as you'd like, but please, one question per post.

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