New Kinect ready 250GB Xbox 360 Comes to India [Rs. 21,990]

If you have been waiting to buy the Microsoft gaming console Xbox 360 now is the right time as Microsoft has launched their new Xbox 360 with 250GB of hard disk space in India. This new console is slimmer than it’s original counterpart and sports black glossy finish.

The best thing about this new Xbox 360 is that it is compatible with Kinect, which is set to release at the end of 2010. Wi-Fi, 5 USB ports, touch sensitive button, and Kinect port, ensures that you get the most connectivity options, and the best interactive experience. Also thanks to its carefully crafted design this new Xbox 360 runs quieter and cooler than the previous version.

 

250GB Xbox 360 is expected to hit shelves with a price tag of around Rs 21,990.

hacking PlayStation 3: Jailbreak PS3 Using Android Mobiles

New method of jailbreaking/hacking PlayStation 3 has been surfaced through which you can use your Android Mobiles like HTC Desire, Nexus One with root access to jailbreak your PS3. Using this you will also be able to backup your precious Blu-ray games on PS3 (requires download manager patch).

 

How to Jailbreak PS3 Using Android Mobiles (HTC Desire, Nexus One)

• Download PSFreedom and extract the file
• Now place file named N1-CM6-PSFreedom.tar.gz to the phone’s memory card
• Download this flashable boot.img
• Enter Recovery mode and flash the file named PS3-signed.zip
• Reboot the device
• Now Using the Terminal Emulator type this

#cd sdcard
#su
#insmod psfreedom.ko

• Now Turn off your PS3 Slim by killing power at the power socket and connect your Android mobile via USB.
• Turn on PS3 by pressing power and eject button respectively in quick succession.
• Now you should be able see “Install Package files” in the PS3 XMB menu
• Congrats your PS3 has now been jailbreaked.

How to get the phone back to previous state.

Download this file named PS3-no-more-signed.zip and flash into this file by going to recovery mode.

PSFreedom ports for Samsung Galaxy S and PSP are also under development and would be available soon.

Verizon gets BlackBerry Curve 3G, too

Now that T-Mobile has had the BlackBerry Curve 3G for a week, it's time for Verizon to get in on it as well. The 3G version of the popular BlackBerry Curve (model 9330) will finally head to Verizon Wireless. It has a slightly tweaked design--a mirror-finish trim, soft-touch sides, and a textured back--but the full QWERTY keyboard remains largely the same. You also get the same media keys on the top. Features include 512MB of flash memory, a microSD card slot that can support up to 32GB cards, GPS with VZ Navigator support, Wi-Fi, camera with video recording, and support for BlackBerry App World.

Though the Curve 3G comes with BlackBerry OS 5, it is upgradable to OS 6. It will be available in business sales channels September 16, and online and in retail stores in the coming weeks for the low price of $29.99 after a $100 mail-in rebate and a new two-year service agreement. The phone requires an e-mail and Web feature plan.

IPv6 reality starts dawning on ISPs

The transition to IPv6 hasn't been easy, mostly because of a compatibility barrier that has pushed back the change until absolutely necessary. Those with an IPv4 connection to the Internet can't see IPv6 Web sites and vice versa, unless some gateway device is specifically set up to handle the chore.
For companies with Web sites or other Internet services, they must obtain new IPv6-based addresses for their servers and network connections to the outside world so they can handle IPv6 traffic. "If you've got a Web site, you should be looking at how to get it on IPv6 now," Curran said.




Some big companies have begun the transition; Google, a particularly fervent IPv6 advocate, has made YouTube and other services available on IPv6. Facebook also began its IPv6 transition, as has Comcast.
For ordinary consumers, they'll eventually have to upgrade DSL and cable modems, though because the IPv4 network will still work, they'll only miss out on Internet services available only over IPv6.



IPv4 (Internet Protocol version 4) catalogs Internet servers with 32-bit numbers, offering of 4.3 billion numeric addresses. That may sound like a lot until you realize only 6 percent are left unused today.
By comparison, IPv6's 128-bit address space offers a gargantuan number: 340,282,366,920,938,463,463,374,607,431,768,211,456 if you're keeping track.



That's enough to render unnecessary today's IPv4 stopgap measures, including network address translation (NAT) to let multiple devices share one IP address in something like the same way that an apartment building with one street address might have many subunits. IPv6's capacity also is vast enough to assign IP addresses to countless devices that don't merit them today--mobile phones, printers, cars, and the growing variety of other new devices in an increasingly network-aware world.



The EC-funded survey polled 1,500 companies, 58 percent of them ISPs, in 140 countries. The study also found that awareness of IPv6-related issues is strong, with 84 percent already possessing IPv6 addresses of their own or planning to request them.


The five regional Internet registries charge a fixed fee for allocating IP addresses, but that doesn't necessarily stay the same at Web hosting companies, ISPs, and others that sell the addresses to the actual customers.
"The demand curve goes from very low to very high one week after we run out of IPv4 addresses," Curran said.

The difficulties of adopting the next-generation Internet standard so far have outweighed its advantages, but one key part of the computing industry is showing signs of beginning the IPv6 transition in earnest: Internet service providers.

 

A total of 32 percent of ISPs offer IPv6 services to business customers today, according to a new European Commission-funded survey, said John Curran, chief executive of American Registry for Internet Numbers (ARIN), one of the world's five nonprofit Internet registry organizations that collectively hand out Internet addresses and keep track of which numeric addresses are connected to which servers on the Internet.
That percentage, though, is increasing.
"Sixty percent intend to have services within a year. That's a huge step up," Curran said. "Within two years, it is 80 percent."

e's baffled what the remaining 20 percent of ISPs will do, given that the Internet is expected to run out of the current limited stock of IPv4 addresses in about that same time frame, making ISPs left behind the virtual equivalent of a home-building contractor with no empty lots left on the street. According to Internet service company Hurricane Electric, which monitors the IPv6 transition, there are about 203 million IPv4 addresses left, enough to last less than nine months.

Hurricane Electric's estimate is reasonable, Curran said, though it's hard to predict exactly given the inconstant decline. The five Internet registry organizations pull unused IP addresses out of the pool as needed in so-called "/8" blocks of 16.7 million addresses at a time, then it takes some time for them to allocate them to ISPs and others. Fourteen of the original 256 /8 blocks are unused.

Even after the registry organizations have handed out their last IPv4 addresses, it'll probably be another six months before the ISPs exhaust their supply, Curran said.

Stephen Shankland

Live Matrix aims to schedule the Web

A new service called Live Matrix, which comes out of private beta Monday morning, is attempting to solve the very large problem of organizing live events from all around the Web into one place.
These are not just Web events though--things like Apple event live blogs, online sales, or streamed concerts--but TV programs, auctions, and sporting events too.
In the same way TV listings work, users can cycle through upcoming events by "channel." These are broken down by genres like sports, entertainment, news, and shopping. Users are also able to create their own channels by "following" particular programming items.

The mechanism for finding new events is displaying how many users have saved any particular one; each event gets a little counter that looks similar to Digg's voting box, and some of the most popular events--both live and upcoming--get some limelight on the site's front page. Once you've found an event you like, you can then save it to your listings, schedule a reminder, or share to a social network:

To actually view content, the service jumps you off-site, which in my testing worked well for some things and not so well with others. For scheduled Web shows like CNET's live podcasts, it takes you straight to the program page, but other things like sports games did not always go to the right event. I also ran into problems with sites that required registration or a pay wall to view content, something that would have been nice to get the heads-up on, or filter out of the listings.

Fans of Clicker will no doubt be drawn to the site for some of its scheduling similarities, though Live Matrix has much broader ambitions at bringing together video content along with just about anything that's got a time and URL. While I think video is what most people are going to be angling for, the site has some serious potential for organizing just about everything else.

  

Josh Lowensohn

Demo's shifting focus: Businesses or consumers?

Instead of building fast with lots of servers, lots of customers, and hopes of revenue, many new start-ups--mindful of the recovering economy--are taking a downright old-fashioned approach: make money first, grow later.

Whether that will play out at the Demo conference, which begins in earnest Tuesday in Santa Clara, Calif., is debatable. But in recent months, the buzz-worthy start-ups have had a decidedly more traditional view than Web 2.0 heavyweights like Facebook and Twitter, founded just a few years ago with the principle that you build your audience, then you make your money.

There is, in fact, a shift every few years as start-ups change direction from the fast and loose (though potentially immense) consumer market, to that of businesses large and small. Whichever one is in vogue depends largely on who's doling out the money--be it investors or the end users. For a while, neither of these groups were willing to open up their wallets, forcing many start-ups to go back to the drawing board with their ideas.

Not too much needs to be said here about the merits of a good business-centric Web service; the Web offers the same kind of breakthroughs for a quick start, or cheaper overhead than traditional, in-house solutions. That's obviously an attractive angle for any Web start-up, especially with big contracts that bring the promise of long-term revenue or an exit to a bigger company.

On the flip side are the consumer services--the YouTubes, Facebooks, and the Twitters of the Web world. We know these names because they've reached the very top. Though just like in world of pro sports, there are an endless number of competitors ready to usurp, and that continue to do well, albeit on a slightly lower tier of popularity.

So which side of the fence does a company start out on? And can you change your mind once things get up and running?

In just the last couple of years there have been a number of companies that started out one way and eventually went another. Some might just call this survival, and in that way it's indicative of the environment they must survive in. One good example of that is storage service Box.net, which came onto the scene with a very flashy widget users could place on blogs or Web sites to share files with one another. This was back when companies would send you a press release about such things (note: some still do). Over the years the tool became more focused on its business users to the point where the newest product features almost always begin at the top before eventually trickling down down--its desktop file sync tool being one of the best examples of that.

It's the same story for Ning, which got its start around the same time as Box, though offered up a free DIY social network instead. The service was aimed mostly at users who wanted to create their own social networks with more control both over the look and feel and the feature set than could be found on larger social sites. Additional feature modules could be paid for, which brought extra features. The company went on like this for five years before killing off the free account levels, and requiring that users shell out for a paid plan by default.

Victor Multi-Kill Electronic Mouse Trap

Pet store mice can be a cute addition to the home. They can provide a child with responsibility and entertainment. Mice can also be bred to feed your pet snakes which could be considered gruesome to some but entertainment for others. These mice are clean and are bred in a controlled environment.

 

 

 But what if you lie awake at night and hear scratching in your wall and awake to find bread crumbs lying on the floor and droppings lying about.  This is a nuisance and most likely will cause anxiety and paranoia in your household. These are wild uncontrolled rodents that carry disease and germs which can be very harmful to your health and your family’s health.

"The Victor Multi-Kill Electronic Mouse Trap provides a solution to these pests and disease carriers in a very clean and easy to use package. Just bate the trap with bits of food that you think will attract your mice.  Then leave it alone over night. If the mice smell what you have left for them, they will make their way into the Victor Multi-Kill Electronic Mouse Trap and be sealed in. Once inside they will make their way to the bait which is place just ahead of three electrically charged plates. The plates will zap the mice just as an insect zapper does to those pesky insects outside."

                                                                  Once the mouse is dead, the chamber inside will rotate and drop the dead mouse into a collection drawer and reset for its next kill. The mouse is then deposited into a collection bay below, ready for disposal. The collection tray holds up to 10 mice, so you can potentially rid your house of its pest problem within one night. The Victor Multi-Kill Electronic Mouse Trap requires 4 C batteries to operate which will kill around 150 mice if your problem is that great. The product sells for around 100 dollars.

How to measure a website's IQ?

The creator of the world wide web, Tim Berners-Lee, has made an odd request: for a kind of rating system to help people distinguish sites that can be trusted to tell the truth, and those that can't.

Berners-Lee was speaking at the launch of the World Wide Web Foundation, which aims to ensure that everyone in the world benefits as the web evolves.

In his speech he referred to the way fears that the LHC could destroy the worldspread like wildfire online. As the BBC puts it, he explained that "there needed to be new systems that would give websites a label for trustworthiness once they had been proved reliable sources."

He went on to say that he didn't think "a simple number like an IQ rating" is a good idea: "I'd be interested in different organisations labelling websites in different ways". Whatever process is used to hand out the labels, it sounds like a bad idea to me.

Berners-Lee himself directed us towards some of the its biggest problems:

"On the web the thinking of cults can spread very rapidly and suddenly a cult which was 12 people who had some deep personal issues suddenly find a formula which is very believable...A sort of conspiracy theory of sorts and which you can imagine spreading to thousands of people and being deeply damaging."

There are plenty of arguments online already about whether Scientology is a cult. I find it unlikely anyone will be keen to step in and label sites on either side as not to be trusted. Others might reasonably argue that all religions - whether established or not - should come with a warning message.
As for wading in to put a stop to conspiracy theories, I can't image anything their proponents could benefit from more.

Berners-Lee also mentioned the system would help people find out the real science behind, for example, the LHC's risks. You might think handing out rating for sites about science would be easier, with publishers of peer-reviewed science, for example, receiving a top rating without problems.

But there will be papers in the archives of any journal that have been entirely superseded. And a whole lot more that present results that are valid, but can be misleading to some readers. Web licences to ensure that people only read sites they can handle are the next logical step.

Fortunately it's much more likely that the whole idea will quietly be forgotten, which will at least prevent Berners-Lee receiving one of the first "potentially misleading" badges for thinking it up in the first place.

Let's hope the World Wide Web Foundation and its laudable goals have a rosier future.

LOOKING TO LEAVES FOR SOLAR TECHNOLOGY ???

• A leaf is constantly building new photosynthetic reaction centers to replace those damaged by oxygen and sunlight.

 

• Scientists are experimenting with ways to apply the same principles to building solar energy cells.

 

• This new technology could yield a system that's highly efficient, can self-repair and works well under low light conditions. 

 (this contnet is fully provided by Rachel Ehrenberg, Science News, credit to them)

Plants may hold the key to better solar technology

A new technique may one day lead to solar cells that bring themselves together like a molecular flash mob and repair damage they sustain during the rough business of turning light into electricity.

The research lays the groundwork for cheap, self-repairing solar cells with an indefinite lifetime, a team reports Sept. 5 in Nature Chemistry.

"It's a man-made version of what nature does," says nanocomposite expert Jaime Grunlan of Texas A&M University in College Station. "This really looks like ground-breaking seminal work; I've never seen anything remotely like it."

The sun's rays can be brutal, even for a leaf that's harvesting them. When photosynthesis is going full blast, a leaf is constantly building new photosynthetic reaction centers to replace those damaged by harsh oxygen species and other destructive molecules generated by intense ultraviolet light.

So rather than trying to make solar cells that are extremely durable, the team decided to take a literal leaf from nature's book and go the route of self-repair, says chemical engineer Michael Strano of MIT, who led the project. He and Stephen Sligar and Colin Wraight of the University of Illinois at Urbana-Champaign, along with other colleagues, designed a system where damaged parts could be easily replaced.

The researchers began with light-harvesting reaction centers from a purple bacterium. Then they added some proteins and lipids for structure, and carbon nanotubes to conduct the resulting electricity.

These ingredients were added to a water-filled dialysis bag -- the kind used to filter the blood of someone whose kidneys don't work -- which has a membrane that only small molecules can pass through. The soupy solution also contained sodium cholate, a surfactant to keep all the ingredients from sticking together.

When the team filtered the surfactant out of the mix, the ingredients self-assembled into a unit, capturing light and generating an electric current.

The spontaneous assembly occurs thanks to the chemical properties of the ingredients and their tendency to combine in the most energetically comfortable positions. The scaffolding protein wraps around the lipid, forming a little disc with the photosynthetic reaction center perched on top.  These discs line up along the carbon nanotube, which has pores that electrons from the reaction center can pass through.

Adding the sodium cholate back into the mix disassembles the complexes. But filtering it out again brings them right back together.

"The idea that it happens reversibly and at will is quite amazing," says Strano. "It approaches what happens in biology -- forming a huge amount of order with the flip of a switch. It's kind of like taking puzzle pieces and throwing them up in the air and them coming down assembled."

The complexes eventually lose power, but they are easily revived, says Strano. The research team disassembled the units and replenished the photosynthetic reaction centers. Four such replacements over the course of a week kept keeping the complexes humming along.

"This is very nice work -- the procedure they've got, the control they have over the system," says biochemist Mike Jones of the University of Bristol in England. "It's simple, it's very nice."

The units can't compete with silicon-based solar cells in use today. But silicon-based solar cells reached their current level of efficiency only after decades of research and development, says Jones. Similar investment in this new technology could yield a system that's highly efficient, can self-repair and works well under low light conditions, he says.

What's more, the main ingredients for these solar cells might one day be easily extracted from plant material, says Strano, perhaps even from garbage biomass. "We could turn waste into an organized product," he says.

GAMMA RAY 'RACE' PROVES EINSTEIN RIGHT AGAIN !!!

Timing is everything, especially to physicists seeking to unite the mechanics of gravity with the quantum world of particles.

So when the opportunity came to measure if gamma rays of different energies traveled at the same speed, a team of physicists stepped up to the challenge.

At stake was nothing less than a foundation of modern physics -- Einstein's theory of relativity, which posits that all electromagnetic radiation travels at the same speed, whether low-energy radio waves, high-energy X-rays or gamma rays, or any wavelength in between.

A violent explosion 7.8 billion light-years away gave scientists the unique opportunity to punch a hole in Einstein's theory. NASA's Fermi Gamma Ray Telescope detected many gamma ray photons from the 2.1-second long burst, including one that was a million times more energetic than another.

Scientists wondered if the higher-energy photon might have arrived in the telescope's detector slightly later than its partner due to quantum-level entanglements in space that a less energetic photon wouldn't even notice.

"Some quantum gravity theories predict that the higher energy photons are more affected by the quantum nature of space-time and will travel more slowly than lower energy photons," said Stanford University's Peter Michelson, the lead scientist on the Fermi Large Area Telescope.

Michelson says it's kind of like the difference between a car and an ant traveling down a dirt road: The car isn't impacted by the pebbles and the rocks, whereas an ant has to go around every obstacle in its path.

After a journey of more than 7 billion light-years, however, the gamma ray photons arrived nine-tenths of a second apart on May 9, 2009 -- not enough of a lag to account for the theorized quantum effects.

"Einstein, at this point, wins again," Michelson said.

That's not to say that a theory of quantum gravity doesn't exist.

"It's a theory that would unify all the forces of nature," said Mario Livio, an astrophysicist with the Space Telescope Science Institute in Baltimore, Md.

"What Fermi has done here is push us to our limit," he added. "This only tells us where are the dead ends. It doesn't necessarily tell us where the correct way is."

The research was presented during a three-day symposium in Washington D.C. to highlight results of the telescope's first year of operations.(credit: discovery channel)

IS A BLACK HOLE 'MIDDLE CHILD' FEASTING IN A DISTANT GALAXY?

                                                                      Black holes are everywhere. They can be left behind as the remnant of a massive star that exploded long ago, being just a few times the mass of our own Sun. Supermassive black holes, containing the mass of million or billions of Suns, sit at the centers of many galaxies. There has been controversy in the astronomical literature about the existence of intermediate mass back holes, and new evidence for one such "middle child" has been presented for an x-ray source in a distant galaxy.

"The candidate's name is HLX-1, and is a bright source of x-rays near a galaxy 300 million light years away. At that distance, it is too bright to be a stellar-mass black hole."

 

 

he emission from the accretion disk around a black hole is limited by the balance between the pressure of the stuff falling in and the pressure of the light itself pushing outwards. For it to be a "normal" black hole, such "ultraluminous" sources would have to have some extra effects thrown in to the model. But this "hyper-ultraluminous" one is really difficult to explain unless it is a few hundred times the mass of the sun, putting it in the elusive intermediate size family.

 

 

There is the possibility, however, that we're looking at a supermassive black hole in an even more distant galaxy that just happens to line up with the galaxy it appears to be in. A very accurate measurement of the x-ray source's position with the Chandra X-Ray Observatory found that it coincided with a source in visible light, and the ratio of the visible light to x-ray light was not consistent with this hypothesis. However, more evidence is necessary.

 

That's where the group led by Klaas Wiersema comes in. They used the Very Large Telescope in Chile to take a spectrum of the visible light of the object. (You can think of that as separating the light into its rainbow of colors.)

This is a tricky situation, as they had to subtract out the spectrum of the galaxy itself. After this, they detected an emission line of hydrogen coming from the mysterious source, and confirmed that it did indeed originate from the galaxy it was near by its redshift. This means that the color of the emission line is slightly redder than you would expect as a result of the galaxy moving away from us in the ever-expanding universe.

Astronomers still aren't sure what makes up with visible light source that coincides with HLX-1. It could be a globular star cluster or the remnants of a dwarf galaxy that was torn apart by host spiral galaxy. Either one is a place where intermediate mass black holes are thought to exist. Though the search for such beasts continues, this is looking like a strong case for their existence in the case of these incredibly bright x-ray sources.

This work has been published in Astrophysical Journal Letters and the preprint is available on arxiv.org. Thanks again to Ned Wright's Cosmology Calculator.(source: discovery channel)
 

Want to print in 3 dimensions?

• The process is similar to an inkjet printer, however, the "ink" is powder and a bonding agent.

 

•  Printing in layers, the machine builds up the object in three dimensions.

 Some of the gadgets engineers come up with are just cool. We’re going to check out one of them. Printing in three-dimensions. Today, on Engineering Works!

 
Most of us have home computers these days, and they’re all connected to desktop printers. Hit the print key and out comes that report you needed for work or a barbecue sauce recipe from the web. Easy.

 
That was then. "Now, a new kind of printer is taking printing into three-dimensions, not just flat on a piece of paper. These printers print out solid objects, usually in plastic. There aren’t many of the printers around yet. Technology geeks and hobbyists own most of them. They use them to make stuff like jewelry, toys, tools or kitchen appliances."

Tonight Show host and classic car collector Jay Leno even has one. His mechanics use it to print out car parts that they can’t buy any longer. They send the plastic models to machine shops to get real metal parts made, cheaper and faster than custom-designed parts.

 
The 3-D printers are starting to catch on. You can buy them in some electronics stores or directly from the manufacturers. Prices run from $750 for a desktop kit model to $27,000 for Leno’s refrigerator-sized unit. So far, it’s definitely a niche device, but enthusiasts are sure that someday we’ll be printing out things we need, not just fun stuff.

 
We can’t print out a ride home, but we’re still done. See you next time.

Engineering Works! is made possible by Texas A&M Engineering and produced by KAMU-FM in College Station. Learn more about engineering. Visit us on the World Wide Web. http://engineeringworks.tamu.edu    

Now Black Holes Can Be Reproduce in Laboratory

Black Holes have always fascinated scientist due to their mysterious properties, but there is much to be learned about them. These strange regions once thought to be absent of light before research found that actually these are the regions with such an extreme gravitational force that nothing, not even light can escape from their surface.

ccording to a latest invention Black Holes (imitation of Black Hole actually) can be reproduce in laboratory now!

Black Holes: What are

they?

Let’s understand it through the example of our own earth:

The mass of earth creates the gravity the pulls the things towards it. With enough power we can escape the earth’s gravitational force. This is how space vehicles leave the earth’s atmosphere.

Now if we squeeze the size of earth to that of a marble. This will increase the mass and gravitational force of earth to such extent that it would be impossible to bypass that force. Black holes are also regions with such a large mass and gravitational force that not even light can escape from them. Due to this it is not possible to view Black holes, but their presence can be realized only by the nearby activities.

Till now scientist have done extensive research about these strange regions in the universe. We know how they born, where they occur, and why they exists in different sizes, but there is much to know about them.

How to Know More about Black Holes?:

Dartmouth researchers have now proposed a new way to explore Black Holes. They plan to reproduce the black hole at a smaller scale in laboratory.  A paper has been published in this regard in Physical Review Letters, August 20 issue.

This method of creating tiny black holes of quantum size will help scientist to understand the insights of Black holes. Stephen Hawking, eminent space scientist had proposed that, Black Holes are not totally void of activity and they emit radiations in the form of photon. This radiation is known as Hawking Radiation or Bekenstein-Hawking radiation.

According to Paul Nation, a co-author of paper and Dartmouth graduate student,

“Hawking famously showed that black holes radiate energy according to a thermal spectrum. His calculations relied on assumptions about the physics of ultra-high energies and quantum gravity. Because we can’t yet take measurements from real black holes, we need a way to recreate this phenomenon in the lab in order to study it, to validate it.”

Scientist has shown that how a magnetic field-pulse microwave transmission line containing an array of superconducting quantum interference devices can reproduce physics analogous to a radiating black hole. This system can be controlled in laboratory and quantum mechanics properties. They can also manipulate the strength of applied magnetic field.

Past Attempts in this Field:

Creation of Black Holes in Laboratory has been proposed before by scientists. It has been proposed using supersonic fluid flows, ultracold bose-einstein condensates and nonlinear fiber optic cables. But the main problem in these schemes was weak Hawking radiation or masked radiation due to overheating of device. This latest scheme is much more efficient than previous proposed models.

Authors of Paper:Paul Nation, Alexander Rimberg, Eyal Buks and Miles Blencowe.

advanced helicopter : Draganflyer X6

Draganflyer X6 is an advanced helicopter that can be operated remotely without any pilot. It is designed mainly to carry wireless video cameras and still cameras. The Draganflyer X6 helicopter can be operated very easily with its hand held controller.

The Draganflyer X6 helicopter is based on a unique 6-rotor design that has been under development since early 2006. It uses 11 sensors and thousands of lines of code to self-stabilize during flight which makes it easier to fly than any other helicopter in its class. The on-board software of Draganflyer X6 is developed after extensive testing and development. Draganflyer X6 helicopter is a revolution in the field of Unmanned Aerial Vehicle (UAV).

It can be used very efficiently for various applications and it is ideal for spying on the enemy in a safe and reliable manner.

MAJOR FIELDS OF APPLICATIONS

The new Draganflyer X6 can be used in various field such as Industrial Constructions, Government Applications and Educational needs.

1)Industrial Use:

Draganflyer X6 can be used very efficiently in Bridge Constructions, Building Construction, Pipeline / Hydro-Transmission Line Inspection, Road Construction. With the help of this aircraft you can get videos and images of any site from various angels.

Equipped with a high resolution still camera (with remote zoom, shutter control and tilt) it can capture great images. And its high definition video recorder can record videos very efficiently. It has a range of 500 meters and have a flight time of 20 to 30 minutes.

It is designed specifically with easy controlling system for ease of use it. So, it is easy to fly, needs very minimal training, and provides an extremely stable aerial platform from where you can get photographs and video. It's small size and portability makes it suitable to carry it to any construction site and have it ready to fly in minutes.
2)Government Applications:

Draganflyer X6 can be used in many government applications such as Law Enforcement,Fire, Emergency Measures, Wildlife Management, Environment and Transportation. You can use this advanced machine for Disaster Response, Conservation Enforcement, Crime Scene Investigation, Crowd Control, Explosive Disposal Unit, Search and Rescue Missions, Traffic Congestion Control, Criminal Intelligence Applications, Fire Damage Assessment, Fire Scene Management any many more.

3)Educational Applications:

Draganflyer X6 is very useful in educational applications such as Advanced RC Flight Research, Aerial Archeology, Environmental Assessment, and Geological Exploration.

FEATURES AT A GLANCE:

Draganflyer X6 is unique in many terms. It has some very advanced features that make it different and more efficient then other remote controlled helicopters. Some of these features are:

1)Six Rotor Co-Axial Configuration

2)GPS Facility

3)Carbon Fiber Folding Frame

4)Handheld Flight Controller

5)Advanced Power System

6)High Damage Tolerance

7)Specially manufactured Cases

8)Engineered for Safety

9)Electronic Flight Stability

10)Telemetry Software

11)Wireless Video System

12)Anti-Vibration Camera Mount

13)HD Digital Video Camera

14)Low Light Camera

15)Thermal Infrared Camera
These various features of Draganflyer X6 makes it very useful and efficient in its work.

"SOUND BULLETS" COULD BLAST SUBS, CANCER

• An ordinary office toy has inspired a whole new acoustic weapon: "sound bullets."
• Sound bullets could destroy submarines and annihilate tumors.
• The damage such concentrated waves of pressure could create would be devastating.

An old toy has inspired a powerful new weapon that could destroy submarines or annihilate tumors.

Using a modified version of Newton's cradle, a series of stainless steel balls suspended by fishing wire, scientists from the California Institute of Technology have created a powerful weapon for soldiers and doctors known as a "sound bullet."

 

 

"The beauty of this system is that it's just a bunch of ball bearings that we control with weights," said Chiara Daraio, a professor at Cal Tech and co-author of a new Proceedings of the National Academy of Sciencesarticle. Yet by varying the pressure on the ball bearings, the scientists can dramatically amplify and focus sound waves to make them "extremely destructive," according to Daraio.

 

Newton's cradle is an old toy, but the Cal Tech scientists, including Alessandro Spadonia, have adapted it for a hot new field of science known as metamaterials, which includes the Harry Potter-style invisibility cloak. Metamaterials are usually difficult and time-consuming to create.

For their study, the researchers lined up 21 rows of stainless steel ball bearings in an area the size and shape of a laptop computer, with weights attached at the ends to vary the pressure on each row. Then the scientists dropped a small ball about eight inches onto the ball bearings. Using a high-speed camera and a pressure sensitive material, the scientists watched the pressure waves focus on a single spot several inches away from the metamaterial.

The simple set up belies the power of the new metamaterial. Not only did the scientists focus all of the sound waves onto one specific area; they also amplified those waves more than 100 times than what any other metamaterial had previously produced. Those numbers could easily go higher, said Daraio.

The sound waves Daraio and Spadonia manipulated were too high pitched for human ears to detect. Properly adapted to audible sound, the new metamaterial could turn a normal sentence into a split second ear drum rupturing explosion.

If these sound bullets were actual bullets, the metamaterial would be like transforming hot lead projectiles into rocket propelled grenades, all converging on one place at one time. The damage such concentrated waves of pressure could create would be devastating.
 

"Like normal bullets, sound bullets can travel through air. Unlike normal bullets, sound bullets can also easily travel through liquids and solids. Sound bullets could be used by the military to create submarine melting waves of pressure or shock waves powerful enough to destroy caves otherwise untouchable by conventional weapons."

Sound bullets won't just destroy large objects. Daraio says that powerful, focused sound waves could obliterate hard kidney stones or destroy cancerous tumors without any damage to surrounding tissue.

Other, less destructive applications are also possible, said Daraio. Focused sound waves could let engineers see weak bridge supports or future potholes in roads.

Military or medical use of the new metamaterial is still years away, said Daraio. Yet the simplicity and effectiveness of the sound bullet makes it a "significant development," according to L.B. Freund, a professor at Brown University who was not involved in the research.

"People have focused sound waves for a long time," said Freund. "But if you want to do anything with a sound wave, what you can do is determined by the intensity of the sound wave."

Now that Daraio and Spadonia have found a new way to create these powerful sound waves, the potential range of applications for sound bullets is huge.

"The research has opened a new way to developed applied devices, and was done by young researchers in a very creative way," said Freund.