yukster writes "As Ruby on Rails rocketed into the development community's hearts and minds a few years ago, the number of books on the subject climbed with it. However, a lot of these books were introductory in nature (Agile Web Development with Rails, Beginning Rails, Build Your Own Rails Applications, etc.). What's a budding Rails-head to do once they've gotten the basics down? Books like Advanced Rails, which was released late last year by O'Reilly, aim to fill this void." Keep reading below for the rest of Ben's review.

Popular Science has up a feature looking at "how it works", examining the innards of several new technology-based innovations. We've talked about the Sayaka endoscope in a pill, but did you know it captures images in 360 degrees? We've discussed the adorable little Pleo dino-bot, but did you know how adaptive it is to stimuli? And what about the tank-burning laser that can be fired from an airplane? Well, we haven't discussed that but I'm at a loss as to explain why. "A kind of reverse telescope called the beam expander inside a retractable, swiveling pod called the turret widens the beam to 20 inches and aims it. The laser's computer determines the distance to the target and adjusts the beam so it condenses into a focused point at just the right spot. Tracking computers help make microscopic adjustments to compensate for both the airplane's and the target's movement. A burst of a few seconds' duration will burn a several-inch-wide hole in whatever it hits."

Gibbs-Duhem writes "An MIT graduate student has up a page showcasing a standout art project. He's designed custom LED light fixtures which are seven times brighter than the closest similar commercial models, and include colors which can't be reproduced by a normal RGB cluster (including two ridiculously bright UV LEDs). The result: some beautiful mixed media artwork. The author's goal is to eventually publish a guide to make getting into creating such artwork more accessible to the general public. The site includes lots of great photos and a movie of the art in action. It also has in depth descriptions of the theory involved in this relatively new form of art, an explanation of how the paints were chosen, and an in depth technical discussion of how such lights are designed with schematics and board layouts for those who might wish to build their own lights."

Several readers have pointed out recent articles discussing the development and features of Google Android. Silicon.com has what is essentially an FAQ for Android, providing the relevant basic information about it. Apcmag questions whether Google can meet the high expectations most enthusiasts have for the platform, and The Register discusses Google's claims that it will be competitive with Apple and worth the wait. We discussed a preview of Android last month. Quoting The Register: "Google mobile platforms guru Rich Miner acknowledged that for the moment, Apple may have an advantage. After all, Steve Jobs and company have actually shipped a piece of hardware, while the first Android handset won't arrive until 'the second half of this year.' But Miner also told the crowd that Stevo hasn't treated developers as well as they deserve. 'There are certain apps you just can't build on an iPhone,' Miner said. 'Apple doesn't let you do multiprocessing. They don't let your app run in the background after you switch to another. And they don't let you have interpretive language in your iPhone apps.'"

Roland Piquepaille writes "According to ICT Results, an EU-funded project named Embounded 'has achieved the twin, and apparently contradictory, goals of making embedded systems both smarter and tougher.' One example is the robuCAB, a '4 seat automated people mover' developed by a French company and built from a 4 wheel-drive electric chassis with on-board PC. This autonomous vehicle follows the curb and carries several embedded systems, with one camera on the path edge, another device tracking the angle and direction of the curb, while others control the gearing and acceleration. robuCABs are not totally independent. They move over pre-defined circuits which contain a series of sensors below the ground. But read more for additional references and a picture of two robuCABs on the road."

Pickens writes "The first commercially released personal music player capable of handling MP3 files was launched in March 1998 — the MPMan F10, manufactured by Korea's Saehan Information Systems with 32MB of Flash storage, enough for a handful of songs encoded at 128Kb/s. In the US, local supplier Eiger Labs wanted $250 for the F10, though the price fell to $200 the following year prompted by the release of the Diamond Multimedia Rio PMP300. The Rio was released in September 1998, but by 8 October had become the subject of a lawsuit from the RIAA which claimed the player violated the 1992 US Home Recordings Act. It was later ruled that the Rio had not infringed the Act because it was not responsible for the actions of its customers. Thanks to its lesser known name, the F10 avoided such legal entanglements, but at the cost of all the free publicity its rival gained from the lawsuit."

Hodejo1 writes "The early adopter premium is the difference between the cost of buying the latest greatest techno-toy today and the cost of buying an equal or better unit a couple of years later for much less. That Blu-ray unit you buy today for $300 will cost $80 two years from now. The premium is the $220 you pay to get the starter Blu-ray unit now as opposed to waiting. The same applied for HD-DVD until the axe finally fell and this is where it gets interesting. MP3 Newswire has been tracking post-mortem HD-DVD sales on eBay and surprisingly found that there are many takers. And why are people flocking to buy this decade's Betamax? Simple, they did the math. The demise of HD-DVD format creates "an option where the consumer can get his high-def player NOW without paying the $220 early adopter premium. That savings pays for the player and more. New sealed boxes of the Toshiba HD-A3, which shipped last fall for $300, are now drawing on average about $75 on eBay, where plummeting HD-DVD movie prices are averaging between $6 and $10. "Take a consumer with a 42" plasma set who needs to replace a broken standard definition DVD player. He can a) replace it with another standard definition DVD for about $60. b) He can buy a Blu-Ray player for between $300-$1000. c) He can buy an HD-DVD unit for under $80 and then buy ten $10 or sixteen $6 HD-DVD videos for a total of $180". What really drives this is Blu-ray's skimpy catalog, which will take a couple of years to pump up. Rather than blow the $220 on the early adopter premium just to have access to a limited number of movies the post mortem HD-DVD buyers can enjoy cheap Hi-Def players, cheap Hi-Def videos, and pay less. These users can shift to Blu-ray when players are less expensive and the catalog is robust. Actually, the early adopter premium is more like $320. With the win, Blu-ray manufacturers have raised prices."

Josh Fink brings news of an Atlanta resident who has created a remote control robot to scare off criminals during the night. Rufus Terrill, an engineer, uses it to patrol the streets and encourage drug dealers and other shady characters to move on. Local residents call it his "Robocop." From CNN: "It's a barbecue smoker mounted on a three-wheeled scooter, and armed with an infrared camera, spotlight, loudspeaker and aluminum water cannon that shoots a stream of icy water about 20 feet. Operated by remote control, the robot spotlights trespassers on property down the street from his bar, O'Terrill's. Using a walkie-talkie, Terrill belts out through the robot's loudspeaker, 'That's private property. You guys need to get out of here.'"

ZDOne writes "Small and inexpensive notebooks have been a hot topic in recent months as the Classmate, XO laptop, and the Asus Eee go head-to-head with each other for the low end/educational market. ZDNet has a look at all three systems, comparing the three platforms on multiple points of data to determine which of the three fits your needs. 'In terms of overall stylishness the Eee is the winner, but the XO and the Classmate are both more rounded and rugged, and come with carrying handles. The OLPC XO has the biggest screen, an innovative 7.5in. dual-mode transmissive/reflective LCD that can swivel from traditional clamshell mode to 'e-book' mode with the screen facing outwards, tablet-style (although it's not a touch-screen). The Classmate and Eee both have similar, rather cramped, 7in. TFT displays. '"

Alex Dekker writes "Sony's Mike Abary says in an interview, 'If [Asus's Eee PC] starts to do well, we are all in trouble.' Presumably by 'we' he means all the hardware manufacturers who sell over-priced, full-fat laptops. And he's not going to be too pleased when he sees the Linux-powered, sub-$200 Elonex One. Looks like what's bad for Sony may be good for the consumer." The CNet article mentions that a version of the Eee running XP is available in Japan now and will be coming to the US within weeks.

Tom's Hardware is reporting that the Optimus keyboard that everyone was so anxious for (although maybe less so when they saw the price tag) started shipping this week. "According to an announcement made on the Optimus project blog, keyboards are now shipping to customers who pre-ordered the $1564 keyboard nine months ago. Keyboards with passive keys are delayed and will be shipping in about a month, the manufacturer said. [...] Earlier this month, one of the first Optimus Maximus keyboards was sold for $2750 on Ebay." Engadget even got the chance to test one of these expensive toys out.

mooseman93 wrote to point out Forbes is suggesting that if you haven't purchased an iPhone yet, you may want to wait just a little bit longer. Supposedly the next generation of iPhone will offer some substantial upgrades, including 3G capabilities. "To be sure, a 3G iPhone likely won't pop up over the next several weeks. The Unofficial Apple Weblog reported this week that Apple is hiring a television production firm in preparation for a high-profile late February announcement. That event, however, will likely detail the widely anticipated release of a software developer's kit for Apple's iPhone and iPod Touch. But the wait can't drag on much longer. AT&T is building out its high-speed wireless network as quickly as it can, announcing Wednesday that it will expand its 3G wireless broadband service to more than 80 additional cities by the end of the year for a total of roughly 350 markets."

mitbeaver writes "I'm planning a round-the-world trip. 6+ months in developing countries, including Everest base camps 1 & 2, the deserts of Namibia and lots of places in between. I want to bring something to write (blogs or the Great American Novel) and burn DVD photo backups to mail home. I don't really need much in the way of power, but I do need it to survive the altitude, dust, moisture of tropical locations, and being hauled around non-stop for the better part of a year. I will be carrying my life in my backpack, so every pound counts. It looks like some 'semi-rugged' ultraportables exist, but the truly 'rugged' are all pretty heavy. These are pricey, and the risk of theft is non trivial. A smaller laptop is easier to keep on my person more often, which is safer (in most countries) than leaving it in the hostel/hotel. Still, the rugged guys are 2x the price — almost worth buying a cheap one and planning an on the road replacement purchase. I know we've talked about gadgets to carry around the world before, but any advice would be greatly appreciated." We also discussed laptop travel cases a little more than a year ago.

The Byelorussian Hatter writes "Wired, presumably bored to death of Cellphones, Zunes, MairBook Nacs and what-have-you, looks back at the elegant inventions of a less civilized age. 'The Turk was a chess player concealed in a table packed with cogs and gears, contrived to give the appearance of a mighty chess-playing machine. Atop the table, an articulated automaton would be seen to make the moves determined by the master within. One of the 18th and 19th century's many illustrious hoaxes, the Turk is perhaps the greatest gadget that wasn't.'"

Engadget has a couple of great videos depicting the new 'Noahpad' laptop offering from E-Lead. This laptop offers a new kind of touchpad that is integrated with the keyboard. An interesting idea to be sure, but I doubt I could ever get used to typing on something this strange.

An anonymous reader writes "This week a sub-$100,000 rocket belt was unveiled and will be on sale this summer, but that's the sad thing: it's still not a real jet pack. Here's a fascinating inside look at the human-flight industry, full of law-suit scandals, technical difficulties, fuel-economy woes and endless delays. The good news? It all points to the next generation of rocketeer research, with real applications for medical rescue and military technology actually coming on the horizon. From the article: 'With a little patience, and a little funding, we could actually have the pleasure of grumbling over regulatory issues we never dreamed possible. Like being limited to specific kinds of air strips, because the jet strapped to your back is classified by the FAA as an ultralight. Or being required to wear a ballistic parachute, because Amarena's Thunderjet design could reach altitudes as high as 10,000 feet (and, for the record, speeds of up to 160 mph, provided someone can solve wind-resistance issues).'"

philetus writes "New Scientist has up a story on Posey, a hub-and-strut construction kit that senses its configuration and communicates it wirelessly to a computer. From the article: 'If you gave Lego brains, you might get something like Posey, a new hands-on way of interacting with computers developed at Carnegie Mellon University, Pittsburgh, US. When Posey's plastic pieces are snapped together, an exact copy of the construction appears on a computer screen. Every twist of, say, a stick figure's arm is mirrored in 3D modelling software ... Each piece's plastic shell is stuffed with chips and devices for processing these signals. They are sent wirelessly to a computer using a low-power protocol called ZigBee. This means, bending Posey's pieces can make objects on-screen respond in real time. Right now, each custom-made piece has about US$50 (£25) worth of parts, Weller estimates. But if mass produced, it could be much cheaper.'"

Mitchell's Boy Toy writes "Firefox's market share has hit 28.0% in Europe as of December 2007, according to a French web metrics firm. That's a 20.7% increase from the beginning of 2007. 'Finland currently has the highest Firefox market share in Europe with 45.4 percent, followed by Slovenia with 44.6 percent and Poland with 42.4 percent.' IE share fell to just 66.1% in December, a 0.9 point loss in just a month. It should also be noted that Firefox's success could spell trouble for Opera's antitrust complaint: 'Firefox's continued success in Europe may undermine some of the arguments made by Norwegian browser maker Opera in an antitrust complaint filed against Microsoft in December of last year. Opera accused Microsoft of abusing its dominant position in the web browser market by tying Internet Explorer to Windows.'"

i4u writes "Engadget is reporting that Wicked Lasers has introduced The Torch. It is the world's brightest and most powerful flashlight. The Flashlight is capable of melting plastic, lighting paper on fire within seconds, and if you like, fry an egg or a marshmallow on a stick. At 4100 lumens, The Torch is 100 lumens more powerful than The Polarion Helios, the former most powerful flashlight, and retails for around $300. The Torch is apparently also undergoing review at the Guinness Book of World Records."

An anonymous reader writes "'The LEGO brick turns 50 at exactly 1:58pm today. This cool timeline shows these fifty years of building frenzy by happy kids and kids-at-heart, all the milestones from the Legoland themed sets to Technic and Mindstorms NXT, as well as all kind of weird curiosities about the most famous stud-and-tube couple system in the world.'" Of course, it all peaked in 1979 with the space set. These kids these days with their bionacle. bah.