dargaud writes "I live in an alpine setting and I'd like to be able to remotely view various remote valleys to check for ice formations for winter climbing. I wonder if there are cheap drones that could do that. Requirements would be: GPS guided on a preset route (no remote control necessary, and anyway there's no line of sight), at least 20km autonomy, 1 or 2 cameras on the sides to record valley walls, easy launching and autonomous landing (parachute?) at predefined point, ground detection to avoid crashes (if preset route is wrong or GPS echoes on valley walls as is often the case). Is there anything commercially available cheap enough, or any DIY that doesn't require a year of assembly ?"

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parallel_prankster writes "Researchers at MIT are developing tiny robots that can assemble themselves into products and then disassemble when no longer needed. 'A heap of smart sand would be analogous to the rough block of stone that a sculptor begins with. The individual grains would pass messages back and forth and selectively attach to each other to form a three-dimensional object; the grains not necessary to build that object would simply fall away. When the object had served its purpose, it would be returned to the heap. Its constituent grains would detach from each other, becoming free to participate in the formation of a new shape.' To attach to each other, to communicate and to share power, the cubes use 'electropermanent magnets,' materials whose magnetism can be switched on and off with jolts of electricity."

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First time accepted submitter phaedrus9779 writes "I'm a recently married man about to take on the next big adventure: home ownership! I came across a great house in a great community but I need a little bit extra: a high tech house. The problem: money, I'm on a budget. I'd love to have home theaters, super high tech weather stations and iPads seamlessly installed in all the walls — but this just isn't possible. So my question to the Slashdot community is: how can I build a high tech house that will be the envy of my friends, provide lots of useful gadgets, and not break the bank? Also, as always, the cooler the better!"

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An anonymous reader writes "A team of MIT researchers has come up with a very different approach to solar collectors: building cubes and towers that extend solar cells upward in three-dimensional configurations. The results from the structures they've tested show power output ranging from double to more than 20 times that of fixed flat panels with the same base area (abstract, full pre-print). The biggest boosts in power were seen in the situations where improvements are most needed: in locations far from the equator, in winter months and on cloudier days."

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Bananatree3 writes "While we have sci-fi visions of room temperature superconductors like in the movie Avatar, the question still remains: How would the discovery of a such a material impact our everyday lives? How would the nature of warfare change? How would the global economy react? What are the cultural pros and cons of such a technological shift?" And just as important, in what contexts would you want to see it first employed?

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Lev13than writes "Art historians working in Florence's city hall claim to have found evidence of Leonardo da Vinci's lost Battle of Anghiari fresco. Painted in 1505, the fresco was covered over by a larger mural during mid-16th Century palace renovations. Historians have long speculated that the original work was protected behind a false wall. Attempts to reveal the truth have been complicated by the need to protect Vasari's masterpiece, Battle of Marciano, that now graces the room. By drilling small holes into previously-restored sections of Vasari's fresco, researchers used endoscopic cameras and probes to determine that a second wall does exist. They further claim that the hidden wall is adorned with pigments consistent with Leonardo's style. The research has set off a storm of controversy between those who want to find the lost work and others who believe that it is gone, and that further exploration risks destroying the existing artwork."

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An anonymous reader writes "Vortex technology has been used in everything from rocket-powered fire extinguishers to Nerf guns, but neither of those things are capable of giving the beat-down to hapless protesters. By giving spinning vortices an electric charge, though, pepper spray can be sent over 150 feet at between 60 and 90 mph. A vortex gun uses a pressure wave and a carefully designed barrel to fire donut-shaped rings of air that can hold themselves together over long distances. The military (starting with the German military during World War II) has been running experiments with using vortex canons to knock things over, but it's not a particularly efficient or effective way to go. What the gas rings can be used for is transporting other gasses (like pepper spray or tear gas or pesticide) long distances with a decent amount of accuracy, holding their cargo inside the calm center spinning vortex"

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PatPending writes with this excerpt from CNet: "With just 2 percent of the Smithsonian's archive of 137 million items available to the public at any one time, an effort is under way at the world's largest museum and research institution to adopt 3D tools to expand its reach around the country. CNET has learned that the Smithsonian has a new initiative to create a series of 3D-printed models, exhibits, and scientific replicas — as well as to generate a new digital archive of 3D models of many of the physical objects in its collection. ... They've got technology on their side — with minimally invasive laser scanners they can capture the geometry of just about any object or site with accuracy down to the micron level."

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MojoKid writes "Researchers at Georgia Tech university have built a prototype app for touch-screen mobile devices that is vying to be a complete solution for texting without the need to look at a mobile gadget's screen. In theory, it should greatly help the blind interact with mobile phones, but it could help just about anyone looking for a more efficient way to interact. Research has shown that gesture-based texting is a viable solution for eyes-free written communication in the future, making obsolete the need for users to look at their devices while inputting text. The free open-source app, called BrailleTouch, incorporates the Braille writing system used by the visually impaired. Early studies with visually impaired participants proficient in Braille typing have demonstrated that users can input up to 32 words per minute with 92 percent accuracy with the prototype app for the iPhone."

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An anonymous reader asks "I'm working for a medical centre who want to make a tablet with various videos and webpages about smoking cessation available in their waiting room. The tablet can't access the Internet because of security policies. I'm planning to use a local server with copies of the (Creative Commons) videos and pages accessed through local webpages using the tablet's browser. How can I make only the browser be available to the tablet users? Ideas? Suggestions?"

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