Eis um Site e peras, com tudo sobre GPS para os telemóveis, todos os Sistemas Operativos, modelos, etc:
The Terrafugia, a small airplane that can drive on roads and has been billed as the first "flying car," is now one step closer to becoming street- and sky-legal.The vehicle has cleared a Federal Aviation Administration (FAA) regulatory hurdle for craft classification by weight. A full-fledged production prototype might be just around the corner, according to multiple reports.
A um Contador Geiger...Faraday Film (Conductive film)Similar look and feel to OHP acetate. This stunning material conducts sufficiently to pass current in circuits powering LEDs, buzzers etc..
A DIY Synthetic Aperture Radar System for $250
By Rebecca Boyle
Don't Worry, Air Force, It's Just a Model A homemade synthetic aperture radar system takes high-resolution images of small objects, like this model F-14 in maker Gregory Charvat's garage. Gregory CharvatFor about $250, you can make your very own space-age spy tech, following an MIT professor's instructions.It can capture high-resolution images of small objects -- like a message written in push pins that had been hidden behind a foam plate.Using a garage-door opener, microwave parts and a cordless drill, Gregory Charvat made a working synthetic aperture radar (SAR) system, the same kind of technology the military and NASA use. Charvat used algorithms to combine the back-scattered radar images into a high-res photos of things in his garage, like a Cannondale bike and a model F-14.SAR is useful because it combines multiple radar images to create higher-resolution images than would otherwise be possible. There are a couple ways to do it -- by using a single antenna on a moving object, like an airplane or spacecraft, or by using multiple small antennae scattered over a large area. NASA uses SAR to create detailed maps of other planets, and it can be used to map the spread of oil in the Gulf of Mexico, for instance.http://www.popsci.com/diy/article/2010-06/diy-synthetic-aperture-radar-system-250
Flexible Touch Screen Made with Printed GrapheneSheets of atom-thick carbon could make displays that are super fast.By Nidhi Subbaraman
Graphene, a sheet of carbon just one atom thick, has spectacular strength, flexibility, transparency, and electrical conductivity. Spurred on by its potential for application in new devices like touch screens and solar cells, researchers have been toying with ways to make large sheets of pure graphene, for example by shaving off atom-thin flakes and chemically dissolving chunks of graphite oxide. Yet in the thirty-some years since graphene's discovery, laboratory experiments have mainly yielded mere flecks of the stuff, and mass manufacture has seemed a long way away.
See through: Researchers have created a flexible graphene sheet with silver electrodes printed on it (top) that can be used as a touch screen when connected to control software on a computer (bottom).
Credit: Byung Hee Hong, SKKU.
"The future of the field certainly isn't flaking off pencil shavings," says Michael Strano, a professor of chemical engineering at MIT. "The large-area production of monolayer graphene was a serious technological hurdle to advancing graphene technology."
Nanotubes Give Batteries a Jolt
Lithium-ion batteries with nanotube electrodes could go longer between charges.By Katherine Bourzac
A lithium-ion battery with a positive electrode made of carbon nanotubes delivers 10 times more power than a conventional battery and can store five times more energy than a conventional ultracapacitor. The nanotube battery technology, developed by researchers at MIT and licensed to an undisclosed battery company, could mean batteries that extend the range of electric vehicles and provide longer periods without recharging for electronic gadgets, including smartphones.
Capturing "Hot" Electrons to Double Solar PowerResearchers demonstrate that high-energy electrons lost in conventional solar cells can be captured.By Katherine Bourzac
There's a limit on the conversion efficiency of a conventional solar cell. No matter how it's tweaked, it can only convert 31 percent of the light that hits it into usable electrical current. That's because there's a broad spectrum of wavelengths in sunlight, and some of it has more energy than the active material in the solar cell can handle. High-energy light hits the active material in a solar cell and knocks loose electrons that have a similarly high energy--then these electrons rapidly lose that excess energy as heat.
Physicists know that if they could capture "hot electrons", they could more than double the efficiency of solar cells. The problem is that they lose their energy in a picosecond. Now, researchers have for the first time demonstrated that it's possible to capture hot electrons while they're still in their high energy state, before that heat loss happens.
Careful design at the nanoscale is key. Instead of a conventional bulk semiconductor, the researchers used quantum dots, because these nanomaterials can confine electrons over a longer timescale. "Nanomaterials can keep electrons electrons hot for a longer period of time, so that you can get them out," says Xiaoyang Zhu, professor of chemistry at the University of Texas, Austin.
Sci-Fi Thriller Series Pioneer One Debuts… For Torrents!by Michael Suen | 5:33 pm, June 20th, 2010
More than one million people are expected to download the pilot episode of Pioneer One, the new indie sci-fi series by filmmakers Josh Bernhard and Bracey Smith which debuted on Bittorent-powered distribution platform VODO last Wednesday, with P2P file-sharing giants such as uTorrent, Limewire and The Pirate Bay also pledging their support. As of this post’s publication, there are over 19,000 seeders for one torrent of the episode.
It’s an exciting vision of how entertainment content will be presented in the future: After all, why spend buckets of money trying to get your show on television when you can circulate it directly among the viewers? Who watches actual television nowadays, anyway?
In an interview with TorrentFreak, show-runner Bernhard made a great observation about how niche shows, though they enjoy high DVD sales and online viewing, cannot sustain themselves on network television:
- What's going on here?
- We're finding interesting films (and soon) music and books and distributing them, for-free, through P2P networks. And we're encouraging people to donate to creators who share their films this way.
- So how do I download stuff?
- Whenever we've got a new work to distribute, we'll publish it on the front page. But the idea is that you can grab new VODO films from your favourite tracker or P2P service. Think of it like a release group, but one that works with artists directly.
- So I can share VODO films freely?
- Yep. Share them however you like, and try to get the people you're sharing with to help the artists by donating to them through their VODO page. If you want to show the film commercially, just get in touch with the artist or us, and we'll arrange it.
- How do I submit a work to VODO?
- At the moment, you have to be invited, because we just don't have the infrastructure to handle open submissions. But we're working on it.
- How do I get an invite to submit a work to VODO?
- Send us a mail, detailing who you are and what the work is. If you can give us a URL to an online version of your work, all the better.
- How do you decide which works to distribute through the Distribution Coalition (DISCO)?
- We take into account comments and votes from our invited jurors and regular subcribers, and then decide each month based on these factor and the opinions of our team. While we don't publish a list of our jurors yet, you will be able to see their comments.
- What happens if my work doesn't get selected?
- There's always next time. We're releasing films regularly while we find more P2P distributors to add to our coalition. So don't be disheartened.
- How do you select your jurors?
- Jurors are hand-selected from film professionals of all kinds. Each juror has three juror invites to give out, which they are asked to give only to other people who love films.
- Can I be a juror?
- Maybe, but you can also get the same access as jurors by becoming a regular supporter of VODO. But write to us and tell us why you want to be a juror!
- Who is working on VODO?
- Currently the VODO team is composed by Jamie King (UK, Filmmaker and Academic), Nils Hellberg (Sweden, Designer) and Rama Cosentino (Argentina, Programmer). Other collaborators include Adnan Hadzi (Goldsmiths College, UK, Research) and Dan O' Huiginn (UK, Programming Support). Members of the advisory board include Ashwin Navin, ex-CEO of Bittorrent Inc., and Peter Sunde of The Pirate Bay. Initial website design was made by Pixeco. VODO has been in development since 2008 and was produced by conjunction with the Channel 4 British Documentary Film Foundation, with the support of Arts Council UK, Emerald Fund and Goldsmith's College, London.
http://k3dsurf.sourceforge.net/K3DSurf is a program to visualize and manipulate Mathematical models in three, four, five and six dimensions. K3DSurf supports Parametric equations and Isosurfaces.
Telescópios de Alta qualidade, para o Povo!An artificial cornea (prototype shown here) could restore sight to thousands starting this year
Germany’s Artificial Cornea Ready To Restore Sight To ThousandsJune 2nd, 2010 by Aaron Saenz
An expansive EU project to produce an artificial cornea has found success thanks to the work of Joachim Storsberg of the Fraunhofer Institute for Applied Polymer Research IAP in Germany. Storsberg helped develop a new version of an opthalmological polymer which the eye will bond to and still allow to function properly. The new polymer could help restore sight to thousands waiting for corneal transplants around the world. The artificial cornea has passed clinical trials and is ready to see expanded use in patients this year. Very soon those with corneal blindness may find a ready cure in the form of the new implant.
Corneal blindness affects millions around the world. According to the WHO, about 5 million cases of blindness in the world (as of 2001) were a result of corneal damage or dystrophy. We’ve seen several high-tech approaches to fighting corneal blindness including the application of embryonic stem cells to generate new tissue. For most of those affected around the world, however, corneal transplants represent the surest and most accessible treatment for their condition. A readily accessible, easily made artificial cornea is a huge boon to corneal transplants.
The 91-actuator Array That Manipulates the Liquid Mirror: Denis Brousseau, et al.
Liquid Mirror Breakthrough Could Make State-of-the-Art Optics CheapBy Clay Dillow
A $120 million Earth-based telescope using brand new adaptive optics just trumped Hubble's deep space image clarity three-fold, but such high tech optics aren't just reserved for high-dollar observatories. A breakthrough in deformable liquid mirror technology could drastically reduce the price associated with adaptive optics, making the best in high-tech telescopes more widely available.
Imagine a volume of reflective liquid like mercury in a bowl. Spin the bowl, and the liquid will push toward the edges, forming a concave mirror as smooth as the best mirror glass. But unlike highly specialized mirror glass, it's just a bowl of mercury. It costs next to nothing by comparison.
Writing Circuits on GrapheneA heated AFM tip can draw nanometers-wide conductive lines on graphene oxide.By Prachi Patel
Hot wire: An AFM tip heated to over 150 °C can etch an insulating graphene oxide surface to create thin conductive nanoscale wires.
Credit: Debin Wang, Georgia Tech
Using a heated atomic force microscope tip, researchers have drawn nanoscale conductive patterns on insulating graphene oxide. This simple trick to control graphene oxide's conductivity could pave the way for etching electronic circuits into the carbon material, an important advance toward high-speed, low-power, and potentially cheaper computer processors.
Graphene, an atom-thick carbon sheet, is a promising replacement for silicon in electronic circuits, since it transports electrons much faster. IBM researchers have already made transistors, the building blocks of electronic circuits, with graphene that work 10 times faster than their silicon counterparts. But to make these transistors, researchers first have to alter the graphene's electronic properties by cutting it into thin ribbons, which are then incorporated into devices. Researchers have made these nanoribbons with lithography, with chemical solution-based processes, or by unzipping carbon nanotubes.Graphene, an atom-thick carbon sheet, is a promising replacement for silicon in electronic circuits, since it transports electrons much faster. IBM researchers have already made transistors, the building blocks of electronic circuits, with graphene that work 10 times faster than their silicon counterparts. But to make these transistors, researchers first have to alter the graphene's electronic properties by cutting it into thin ribbons, which are then incorporated into devices. Researchers have made these nanoribbons with lithography, with chemical solution-based processes, or by unzipping carbon nanotubes.
E nano-estruturas, vejam a escala, aquele espaço é de NM de comprimento!Northrop Grumman to build football field-sized hybrid airship
By Noel McKeegan
01:38 June 16, 2010
Not so long ago it seemed that the golden age of giant lumbering airships had gone down with the Hindenberg, consigned to less spectacular roles in research, advertising and as a great camera platform above sporting events... but they're making a comeback. Lighter-than-air aircraft are returning to passenger carrying roles in tourism and in recent years we've seen a new-generation of airships put forward as a cargo-lifting solution (DARPA's now seemingly shelved Walrus Project) and even as a corporate air yacht (Aeroscraft ML866). Now the U.S. Army is moving quickly to build a hybrid airship weapons system that will act as a long-duration UAV – a very big, long duration UAV. The Long Endurance Multi-Intelligence Vehicle (LEMV) will be longer than a football field and stay aloft at altitudes of 20,000 feet for more than three weeks at a time providing an "unblinking eye" for surveillance and reconnaissance.http://www.gizmag.com/hybrid-airship-us-army/15432/
A fragment of a superconducting thin film patterned with nano-loops measuring 150 nanometers on a side (small) and 500 nanometers on a side (large), where the nano wires making up each loop have a diameter of 25 nanometers.
Brookhaven National Laboratory has fabricated thin films patterned with large arrays of nanowires and loops that are superconducting — able to carry electric current with no resistance — when cooled below about 30 kelvin (-243 degrees Celsius). Even more interesting, the scientists showed they could change the material’s electrical resistance in an unexpected way by placing the material in an external magnetic field. Superconducting nanowires and nano-loops might eventually be useful for new electronic devices
Nature Nanotechnology - Large oscillations of the magnetoresistance in nanopatterned high-temperature superconducting films
http://news.nationalgeographic.com/news/2009/04/090427-worlds-largest-model-rocket.htmlWorld's Largest Model Rocket Launch Is Blazing SuccessChristine Dell'AmoreNational Geographic NewsApril 27, 2009
At nearly four stories tall, the world's largest model rocket was only a tenth the size of a real rocket. But the craft's April 25 launch in Price, Maryland, was no small feat.A replica of a NASA Saturn V rocket, the massive model broke the world record for the tallest and heaviest model rocket that's ever been launched and recovered—36 feet (11 meters) and 1,648 pounds (750 kilograms), respectively.After soaring to 4,441 feet (1,354 meters), the machine broke into several parts, as planned, and deployed parachutes before landing about a half mile (0.8 kilometer) from the launchpad, amid loud clapping from spectators.The model's designer, Ohio auto-body specialist Steve Eves, is a child of the space race—"something that's stuck in my mind all these years," he said.
A Science4you, empresa 100% Portuguesa, tem actualmente duas áreas de negócio distintas:Brinquedos: Produção, Desenvolvimento e ComercializaçãoFormação: Campos de Férias e Workshops de Ciência
Progressos na Des-Salinização da Água do Mar:Lawrenceville Plasma Physics High Yield Pulses to Megawatt GeneratorsShare
Lawrenceville Plasma Physics (LPP) has a goal of generating 30,000 joules with each nuclear fusion pulse. This would be net energy with conversion to elecricity. So if 100,000 joules was put in from the capacitors then they would need say 200,000 joules back and convert that to 130,000 joules. 100,000 joules for the next shot and 30,000 as excess energy. they are currently only around the 1 joule level. In April it was 0.1 joule, but in May the current increased to 1 megaamp which suggests about 1 joule output.
LPP plans to then increase the pulse rate to 60 pulses per seconds. It would be producing 1.8 million joules per second.
A one megawatt generator produces one million joules per second. (a watt is a joule/ second)
LPP was also trying to get up to 100,000 joules in each pulse. 60 such pulses would be 6 million joules per second, which if converted at with only about 20% loss would be equal to a 5 megawatt generator.
31.536 million seconds per year * 30,000 joules * 60 pulses per second / 3600 seconds =8760 hours * 60 * 30,000 watt hours = 15.768 million Kilowatt hours
Saltwork Technologies Desalination and Efficiency of Other New Desalination ApproachesSaltworks' patent pending technology employs an innovative Thermo-Ionic™ energy conversion system that uses up to 80 per cent less electrical/mechanical energy relative to leading desalination technologies. The energy reduction is achieved by harnessing low temperature heat and atmospheric dryness to overcome the desalination energy barrier. Saltwater is evaporated to produce a concentrated solution. This solution, which has concentration gradient energy, is fed into Saltworks' proprietary desalting device to desalinate either seawater or brackish water. Some electrical energy is used to circulate fluids at a low pressure, yet the bulk of the energy input is obtained through the evaporation of saltwater.
Dopant chemicals adhere to a graphene sheet, modifying its properties for the development of ultra small and fast electronic devices. Credit: American Physical Society
by Staff Writers
College Park MD (SPX) Jun 07, 2010
An organic molecule that has been found to be effective in making silicon-based electronics may be viable for building electronics on sheets of carbon only a single molecule thick. Researchers at the Max Plank Institute for Metals Research in Stuttgart report the advance in a paper appearing online in the journal Physical Review B on June 1.
Ultrathin carbon layers known as graphene show promise as the basis for a host of extremely small and efficient electronic devices. But in order to create a useful component, the electronic properties of materials like silicon or graphene must be tailored through a doping process.
Yeast and worms can survive hypothermia if they are first subjected to extreme oxygen deprivation, a new study finds.
The results could explain a long-held mystery as to how humans can be brought back to life after "freezing to death," the scientists say.
The study uncovered a previously unknown ability of organisms to survive lethal cold by temporarily slowing the biological processes that maintain life.
"We have found that extension of survival limits in the cold is possible if oxygen consumption is first diminished," said researcher Mark B. Roth of Fred Hutchinson Cancer Research Center in Seattle, Wash.One form of "forced hibernation," the behavior known as "suspended animation," literally involves the sudden halting of chemical reactions in the body due to the lack of oxygen. A 10-hour time lapse video of a garden worm embryo in the process of developing into a full-fledged baby worm showed a rapid process of cell division freeze to a stop upon the environment’s oxygen removal. That same cell division resumed unaffected two and a half hours after oxygen was restored.
...E ver a Erva a crescer!
By Rebecca Boyle Posted 06.14.2010 at 4:44 pm
A. thaliana cell development A new video animation shows cellular development in Arabidopsis thaliana, shedding light on how plants grow. Nature Methods via Scientific AmericanWatching grass grow is way more interesting than you think. In an effort to understand cellular development in plants, a team of French scientists made a surprisingly exciting video animation of grass growing at the cellular scale.The team stained growth cells in Arabadopsis thaliana and rice plants, and trained laser-scanning microscopes on the growing plants, according to Scientific American. They fed the microscope data into new computer algorithms that reassembled the structures, cell by cell, in three dimensions. The result is this video.
E a Microsoft criou uma TV em 3D, SEM os Óculos 3D do costume:
Hummm... Microsoft... Irá estar sempre a CRASHAR?
Microsoft's New Lens Promises 3-D TVs Sans Glasses
By Corinne Iozzio Posted 06.11.2010 at 12:43 pm 10 Comments
Everyone's got World Cup Fever this weekend, and for a lucky few that means getting the chance to break in their brand-spankin'-new 3-D TVs as the matches are broadcast from South Africa. For those who haven't taken the 3-D plunge yet -- be it because of prohibitive pricing or not wanting to deal with the dorky glasses -- Microsoft's Applied Sciences group has shared a new glasses-less 3-D display that could herald the adoption of the sets at long last.http://www.popsci.com/technology/article/2010-06/microsofts-new-lens-promises-3-d-sans-glasses
...MARAVILHA, este drone para o Povo:
How does it work?
First quadricopter that can be controlled by an iPhone/iPod Touch/iPadThanks to its on-board Wi-Fi system, you can control the Parrot AR.Drone using an iPhone®, iPod Touch®, or an iPad®. It was initially designed for the Apple platforms and will be also available on other platforms in the next few months.
Que tal um novo Metamaterial que vai fazer este Avião, Indetectável?
A New Engineered Stealth Metamaterial is the Blackest Ever
By Rebecca Boyle
Stealth Metamaterials A B-2 Spirit bomber flying over Guam. A team of researchers from Purdue University and Norfolk State University in Virginia designed a new metamaterial that absorbs almost all the light that hits it, heralding a new wave of stealth technology. Wikimedia commons/US Air ForceA new blacker-than-black metamaterial absorbs almost all the light that hits it, heralding a new breed of stealth technology.The material's internal structure absorbs almost all the electromagnetic radiation in a particular range, New Scientist reports. Ordinary black objects, by contrast, always reflect a bit of light. The material could be applied to all parts of the electromagnetic spectrum, meaning it could be used to make materials invisible to radar.Designed by Evgenii Narimanov of Purdue University, Mikhail Noginov of Norfolk State University in Virginia and their colleagues, the material consists of silver nanowires embedded in very thin 0.4-inch aluminum oxide squares. Their array-like structure gives them their unusual properties, New Scientist says.
Man-made metamaterials can also bend light to create invisibility cloaks, ultra-thin sound-proof walls and even miniature Big Bangs and megaverses.
The researchers tested their new black material with near-infrared radiation, just beyond the red end of the visible spectrum. When the radiation hit the polished material at less than 45 degrees from perpendicular, about 20 percent of the radiation bounced off. When they roughened the material so it wasn't smooth, less than 1 percent of the radiation bounced off.
Narimanov told New Scientist the technology would likely be used to build radar-proof stealth equipment.http://www.livescience.com/environment/airplanes-punch-holes-in-clouds-create-rain-100614.html
...E para acabar, NAS NÚVENS:
Wow! Jets Punch Holes in Clouds and Create RainBy LiveScience Staff
posted: 14 June 2010 12:21 pm ET
Aircraft can accidentally punch holes in clouds, leaving a trail of snow or rain in their wake, a new study finds.
Turboprop and jet aircraft that climb or descend under certain atmospheric conditions can inadvertently trigger what's known as cloud seeding. This technology is usually associated with schemes to control the weather. However, cloud seeding can happen by accident as planes soaring through mid-level clouds leave behind odd-shaped holes or channels in the clouds and cause narrow bands of snow or rain to develop and fall to the ground.
Holes punched in clouds are a phenomenon that has been recognized for many years and seen in photos from around the world. A front-page feature on Yahoo! carried the headline "A Halo over Moscow" after photos emerged of just such a hole in October 2009.
The secret behind these mysterious clouds has now been revealed: Supercooled water droplets that remain liquid even at subfreezing temperatures — below about 5 degrees Fahrenheit (minus 15 degrees Celsius). When an airplane cuts through clouds containing the supercooled water droplets, air is cooled behind aircraft propellers or over jet wings, and these water droplets freeze and drop toward Earth.http://www.livescience.com/environment/airplanes-punch-holes-in-clouds-create-rain-100614.html
Fungos, para criar Bio-Combustível:Nanostructure coatings remove heat four times faster
In a finding that could well revolutionize cooling technology as we know it, researchers at Oregon State University and the Pacific Northwest National Laboratory have discovered a way to achieve near-optimal heat dissipation by applying a nanostructured coating. Because of performance, versatility and economy of materials used, their method could soon lead to better electronics, heating and air conditioning.We've recently discussed the importance of heat dissipation in electronics; however, while cooling laptops and the likes is an important issue in itself, they are by no means the only area that could benefit from better heat dissipation. The team's work focuses on heat transfer using water in particular and could be used in heating, cooling and air conditioning applications as well as keeping your lap from burning up the next time you check your email at the airport.
Fungus Among Us Could Become Non-Food Source For Biodiesel Production
by Staff Writers
Murcia, Spain (SPX) Jun 11, 2010
In the quest for alternatives to soybeans, palm, and other edible oilseed plants as sources for biodiesel production, enter an unlikely new candidate: A fungus, or mold, that produces and socks away large amounts of oils that are suitable for low-cost, eco-friendly biodiesel. That's the topic of a study in ACS' bi-monthly journal Energy and Fuels.
Victoriano Garre and colleagues point out that manufacturers usually produce biodiesel fuel from plant oils - such as rapeseed, palm, and soy. However, expanded production from those sources could foster shortages that mean rising food prices.
In addition, oilseeds require scare farmland, and costly fertilizers and pesticides. To meet growing demand for biodiesel fuel, scientists are looking for oil sources other than plants. Microorganisms such as fungi, which take little space to grow, are ideal candidates. But scientists first must find fungi that produce larger amounts of oil.
Fab@Home. MakerBot. RepRap. All three rapid manufacturing machines are now available for download, customizing, ordering, cutting, and delivery from Ponoko. Downloading the design files for each one is free. You can then modify the files, upload them to your Ponoko account, and order your customized 3D printer.
Leiam tudo, aqui:
Leiam tudo, aqui:So many to choose fromWe have posted about the various DIY 3D printers on Ponoko before so it was great to be able to see them in action at Makerfaire.The Makerbot guys were showing off their newFrostruder and a couple of new ABS colors. The red was super cool, it kind of glowed. They had a new design for a container for the plastic spool which was good to see. The spool can get out of control if not properly looked after. Also on the horizon is a new Plastruder design(the part that melts the plastic). The new design looks a lot more robust which will be fantastic.
CCBS Multimédia Conversão de filmes antigos para DVD ( A PARTIR DE 24€)
A CCBS Multimédia, quer ajudá-lo a preservar as memórias passadas com toda a fidelidade e garantia. Para tal, conta com um serviço de transcrição onde poderá converter todas as suas cassetes de vídeo, películas de filme antigo (filmes de 8mm, Super 8mm e 16mm) e ou...tros formatos em DVD.
The mini flying robot drones that join forces before takeoff - all without human helpBy Niall FirthIt conjures up a rather frightening vision of a future where intelligent robots work in packs without the need for human intervention.
Last updated at 1:49 AM on 10th June 2010
But scientists are developing robots which can 'dock' with each other and fly together in a swarm.
Using infrared beams the drones are able to find each others' location and connect with one another using magnets, completely autonomously.The individual vehicles - or quadrocopters - have fixed propellers that can lift them into the air, but the resulting flight is erratic and uncontrolled.But once they are joined together these relatively simple little robots evolve into a sophisticated multi-propeller system capable of coordinated flight.Each helicopter unit has its own motor, computer, and sensors.As well as a mini-propellor duct system for flying they also have little wheels underneath to let them crawl around the ground and find each other.
Old shoe steps out after 5,500 yearshttp://www.msnbc.msn.com/id/37598251/ns/technology_and_science-science/
Armenian footwear was like Irish shoes worn until 1950s
updated 5:08 p.m. ET June 9, 2010
WASHINGTON - About 5,500 years ago someone in the mountains of Armenia put his best foot forward in what is now the oldest leather shoe ever found.
It'll never be confused with a penny loafer or a track shoe, but the well-preserved footwear was made of a single piece of leather, laced up the front and back, researchers reported Wednesday in PLoS One, a journal of the Public Library of Science.
Worn and shaped by the wearer's right foot, the shoe was found in a cave along with other evidence of human occupation. The shoe had been stuffed with grass, which dated to the same time as the leather of the shoe — between 5,637 and 5,387 years ago.
Unique Approach For Splitting Water Into Hydrogen And Oxygenby Staff WritersRehovot, Israel (SPX) Apr 07, 2009The design of efficient systems for splitting water into hydrogen and oxygen, driven by sunlight is among the most important challenges facing science today, underpinning the long term potential of hydrogen as a clean, sustainable fuel.
But man-made systems that exist today are very inefficient and often require additional use of sacrificial chemical agents. In this context, it is important to establish new mechanisms by which water splitting can take place.
XCOR Aerospace and United Launch Alliance Announce Successful Hydrogen Piston Pump TestsJune 8th, 2010, Mojave, CA, USA and Littleton, CO, USA: XCOR Aerospace, the developer of the Lynx, a manned suborbital spacecraft and related technologies, and United Launch Alliance (ULA), the primary launch services provider to the US Government, announced the first successful demonstration of XCOR’s long life, high performance piston pump technology with liquid hydrogen.XCOR engineers Mark Street (L) and Mike Valantdiscuss an upcoming test in the control room.