Renewable Energy

What is WIND ENERGY?

- power derived from wind used to generate electricity or mechanical power.

Why do we use Wind Energy?

- The costs it seems are too high and although it is a very green energy it doesn't seem viable. Although wind energy was expensive in its infancy it has now becomes more accessible and is being seen as a good way to provide electricity without polluting the environment.
Climate Changes..

- In recent times renewable source of energy have become increasingly important as old sources of energy diminish and do more damage to the planet. If we are serious about fighting climate change then wind energy is one of the ways we can make progress on this front.
It is a totally clean energy that has no negative side effects on the environment. Wind turbines are built to last a long time and a wind turbine will typically last for 30 years once erected. When you take down a wind turbine you will find that there is no damage to its surroundings. In this way wind energy is a totally clean way of creating electricity.

How is Wind Energy used?

- Wind turbines convert the kinetic energy in the wind into mechanical power. This mechanical power can be used for specific tasks (such as grinding grain or pumping water) or a generator can convert this mechanical power into electricity to power homes, businesses, schools, and etc.

When was Wind Energy created?

- Humans have been using wind power for at least 5,500 years to propel sailboats and sailing ships, and architects have used wind-driven natural venilation in buildings since similarly ancient times. The use of wind to provide mechanical power came somewhat later in antiquity.In the United States, the development of the "water-pumping windmill" was the major factor in allowing the farming and ranching of vast areas of North America, which were otherwise devoid of readily accessible water. They contributed to the expansion of rail transport systems throughout the world by pumping water from wells for the steam locomotives. The multi-bladed wind turbine atop a lattice tower made of wood or steel was for many years a fixture of the landscape throughout rural America.

For more Info:

http://www.otherpower.com/otherpower_wind.shtml

MEMRISTOR

-Since the dawn of electronics, we've had only three types of circuit components--resistors, inductors, and capacitors. But in 1971, UC Berkeley researcher Leon Chua theorized the possibility of a fourth type of component, one that would be able to measure the flow of electric current: the memristor. Now, just 37 years later, Hewlett-Packard has built one.
What is it? As its name implies, the memristor can "remember" how much current has passed through it. And by alternating the amount of current that passes through it, a memristor can also become a one-element circuit component with unique properties. Most notably, it can save its electronic state even when the current is turned off, making it a great candidate to replace today's flash memory.
Memristors will theoretically be cheaper and far faster than flash memory, and allow far greater memory densities. They could also replace RAM chips as we know them, so that, after you turn off your computer, it will remember exactly what it was doing when you turn it back on, and return to work instantly. This lowering of cost and consolidating of components may lead to affordable, solid-state computers that fit in your pocket and run many times faster than today's PCs.
Someday the memristor could spawn a whole new type of computer, thanks to its ability to remember a range of electrical states rather than the simplistic "on" and "off" states that today's digital processors recognize. By working with a dynamic range of data states in an analog mode, memristor-based computers could be capable of far more complex tasks than just shuttling ones and zeroes around.
When is it coming? Researchers say that no real barrier prevents implementing the memristor in circuitry immediately. But it's up to the business side to push products through to commercial reality. Memristors made to replace flash memory (at a lower cost and lower power consumption) will likely appear first; HP's goal is to offer them by 2012. Beyond that, memristors will likely replace both DRAM and hard disks in the 2014-to-2016 time frame. As for memristor-based analog computers, that step may take 20-plus years.
32-Core CPUs From Intel and AMD

Photograph: Courtesy of IntelIf your CPU has only a single core, it's officially a dinosaur. In fact, quad-core computing is now commonplace; you can even get laptop computers with four cores today. But we're really just at the beginning of the core wars: Leadership in the CPU market will soon be decided by who has the most cores, not who has the fastest clock speed.
What is it? With the gigahertz race largely abandoned, both AMD and Intel are trying to pack more cores onto a die in order to continue to improve processing power and aid with multitasking operations. Miniaturizing chips further will be key to fitting these cores and other components into a limited space. Intel will roll out 32-nanometer processors (down from today's 45nm chips) in 2009.
When is it coming? Intel has been very good about sticking to its road map. A six-core CPU based on the Itanium design should be out imminently, when Intel then shifts focus to a brand-new architecture called Nehalem, to be marketed as Core i7. Core i7 will feature up to eight cores, with eight-core systems available in 2009 or 2010. And an eight-core AMD project called Montreal is reportedly on tap for 2009.
After that, the timeline gets fuzzy. Intel reportedly canceled a 32-core project called Keifer, slated for 2010, possibly because of its complexity (the company won't confirm this, though). That many cores requires a new way of dealing with memory; apparently you can't have 32 brains pulling out of one central pool of RAM. But we still expect cores to proliferate when the kinks are ironed out: 16 cores by 2011 or 2012 is plausible (when transistors are predicted to drop again in size to 22nm), with 32 cores by 2013 or 2014 easily within reach. Intel says "hundreds" of cores may come even farther down the line.

Touch-Screen TV

-We love our mice, really we do. Sometimes, however, such as when we're sitting on the couch watching a DVD on a laptop, or when we're working across the room from an MP3-playing PC, it just isn't convenient to drag a hockey puck and click on what we want. Attempts to replace the venerable mouse--whether with voice recognition or brain-wave scanners--have invariably failed. But an alternative is emerging.
What is it? Compared with the intricacies of voice recognition, gesture recognition is a fairly simple idea that is only now making its way into consumer electronics. The idea is to employ a camera (such as a laptop's Webcam) to watch the user and react to the person's hand signals. Holding your palm out flat would indicate "stop," for example, if you're playing a movie or a song. And waving a fist around in the air could double as a pointing system: You would just move your fist to the right to move the pointer right, and so on.
When is it coming? Gesture recognition systems are creeping onto the market now. Toshiba, a pioneer in this market, has at least one product out that supports an early version of the technology: the Qosmio G55 laptop, which can recognize gestures to control multimedia playback. The company is also experimenting with a TV version of the technology, which would watch for hand signals via a small camera atop the set. Based on my tests, though, the accuracy of these systems still needs a lot of work.
Gesture recognition is a neat way to pause the DVD on your laptop, but it probably remains a way off from being sophisticated enough for broad adoption. All the same, its successful development would excite tons of interest from the "can't find the remote" crowd. Expect to see gesture recognition technology make some great strides over the next few years, with inroads into mainstream markets by 2012.
Radical Simplification Hits the TV Business
The back of most audiovisual centers looks like a tangle of snakes that even Medusa would turn away from. Similarly, the bowl of remote controls on your coffee table appeals to no one. The Tru2way platform may simplify things once and for all.
What is it? Who can forget CableCard a technology that was supposed to streamline home A/V installations but that ultimately went nowhere despite immense coverage and hype? CableCard just didn't do enough--and what it managed to do, it didn't do very well.
Tru2way is a set of services and standards designed to pick up the pieces of CableCard's failure by upgrading what that earlier standard could do (including support for two-way communications features like programming guides and pay-per-view, which CableCard TVs couldn't handle), and by offering better compatibility, improved stability, and support for dual-tuner applications right out of the box. So if you have a Tru2way-capable TV, you should need only to plug in a wire to be up and running with a full suite of interactive cable services (including local search features, news feeds, online shopping, and games)--all sans additional boxes, extra remotes, or even a visit from cable-company technicians.
When is it coming? Tru2way sets have been demonstrated all year, and Chicago and Denver will be the first markets with the live technology. Does Tru2way have a real shot? Most of the major cable companies have signed up to implement it, as have numerous TV makers, including LG, Panasonic, Samsung, and Sony. Panasonic began shipping two Tru2way TVs in late October, and Samsung may have sets that use the technology available in early to mid-2009.
Curtains for DRM
Petrified of piracy, Hollywood has long relied on technical means to keep copies of its output from making the rounds on peer-to-peer networks. It hasn't worked: Tools to bypass DRM on just about any kind of media are readily available, and feature films often hit BitTorrent even before they appear in theaters. Unfortunately for law-abiding citizens, DRM is less a deterrent to piracy than a nuisance that gets in the way of enjoying legally obtained content on more than one device.
What is it? It's not what it is, it's what it isn't--axing DRM means no more schemes to prevent you from moving audio or video from one form of media to another. The most ardent DRM critics dream of a day when you'll be able to take a DVD, pop it in a computer, and end up with a compressed video file that will play on any device in your arsenal. Better yet, you won't need that DVD at all: You'll be able to pay a few bucks for an unprotected, downloadable version of the movie that you can redownload any time you wish.
When is it coming? Technologically speaking, nothing is stopping companies from scrapping DRM tomorrow. But legally and politically, resistance persists. Music has largely made the transition already--Amazon and iTunes both sell DRM-free MP3s that you can play on as many devices as you want.
Video is taking baby steps in the same direction, albeit slowly so far. One recent example: RealNetworks' RealDVD software (which is now embroiled in litigation) lets you rip DVDs to your computer with one click, but they're still protected by a DRM system. Meanwhile, studios are experimenting with bundling legally rippable digital copies of their films with packaged DVDs, while online services are tiptoeing into letting downloaders burn a copy of a digital movie to disc.
That's progress, but ending all DRM as we know it is still years off. Keep your fingers crossed--for 2020!

"The Future of Mobile Phones"

Use Any Phone on Any Wireless Network

The reason most cell phones are so cheap is that wireless carriers subsidize them so you'll sign a long-term contract. Open access could change the economics of the mobile phone (and mobile data) business dramatically as the walls preventing certain devices from working on certain networks come down. We could also see a rapid proliferation of cell phone models, with smaller companies becoming better able to make headway into formerly closed phone markets.

What is it? Two years is an eternity in the cellular world. The original iPhone was announced, introduced, and discontinued in less than that time, yet carriers routinely ask you to sign up for two-year contracts if you want access to their discounted phones. (It could be worse--in other countries, three years is normal.) Verizon launched the first volley late last year when it promised that "any device, any application" would.  Meanwhile, AT&T and T-Mobile like to note that their GSM networks have long been "open."

When is it coming? Open access is partially here: You can use almost any unlocked GSM handset on AT&T or T-Mobile today, and Verizon Wireless began certifying third-party devices for its network in July (though to date the company has approved only two products). But the future isn't quite so rosy, as Verizon is dragging its feet a bit on the legal requirement that it keep its newly acquired 700-MHz network open to other devices, a mandate that the FCC agreed to after substantial lobbying by Google. Some experts have argued that the FCC provisions aren't wholly enforceable. However, we won't really know how "open" is defined until the new network begins rolling out, a debut slated for 2010.

Your Fingers Do Even More Walking

Last year, a table with a built-in monitor and touch screen; many industry watchers have seen it as a bellwether for touch-sensitive computing embedded into every device imaginable. Surface is a neat trick, but the reality of touch devices may be driven by something entirely different and more accessible: the Apple iPhone.

What is it? With the iPhone, "multitouch" technology (which lets you use more than one finger to perform specific actions) reinvented what we knew about the humble touchpad. Tracing a single finger on most touchpads looks positively simian next to some of the tricks you can do with two or more digits. Since the iPhone's launch, multitouch has found its way into numerous mainstream devices, including the Asus Eee PC 900 and a Dell Latitude tablet PC. Now all eyes are turned back to Apple, to see how it will further adapt multitouch (which it has already brought to its laptops' touchpads). Patents that Apple has filed for a multitouch tablet PC have many people expecting the company to dive into this neglected market, finally bringing tablets into the mainstream and possibly sparking explosive growth in the category.

When is it coming? It's not a question of when Multitouch will arrive, but how quickly the trend will grow. Fewer than 200,000 touch-screen devices were shipped in 2006. iSuppli analysts have estimated that a whopping 833 million will be sold in 2013. The real guessing game is figuring out when the old "single-touch" pads become obsolete, possibly taking physical keyboards along with them in many devices.

Cell Phones Are the New Paper

Photograph: Courtesy of TSA (left); courtesy of Tickets.com (right)

Log in to your airline's Web site. Check in. Print out your boarding pass. Hope you don't lose it. Hand the crumpled pass to a TSA security agent and pray you don't get pulled aside for a pat-down search. When you're ready to fly home, wait in line at the airport because you lacked access to a printer in your hotel room. Can't we come up with a better way?

What is it? The idea of the paperless office has been with us since Bill Gates was in short pants, but no matter how sophisticated your OS or your use of digital files in lieu of printouts might be, they're of no help once you leave your desk. People need printouts of maps, receipts, and instructions when a computer just isn't convenient. PDAs failed to fill that need, so coming to the rescue are their replacements: cell phones.

Applications to eliminate the need for a printout in nearly any situation are flooding the market. Offers mobile coupons you can pull up on your phone and show to a clerk now makes digital concert passes available via cell phone through its Tickets@Phone service. The final frontier, though, remains the airline boarding pass, which has resisted this next paperless step since the advent of Web-based check-in.

When is it coming? Some cell-phone apps that replace paper are here now (just look at the and even paperless boarding passes are creeping forward).  That lets you show an encrypted, 2D bar code on your phone to a TSA agent in lieu of a paper boarding pass. The agent scans the bar code with an ordinary scanner, and you're on your way. Introduced at the Houston Intercontinental Airport, the pilot project became permanent earlier this year, and Continental rolled it out in three other airports in 2008. The company promises more airports to come.

Where You At? Ask Your Phone, Not Your Friend

GPS is taking off, as phone makers, carriers, and service providers have realized that consumers generally have no idea where they are, ever. A location-based service (LBS) takes raw GPS data that pinpoints your location and enhances this information with additional services, from suggesting nearby restaurants to specifying the whereabouts of your friends.

What is it? LBS was originally envisioned as simply using old-school cell-phone signal triangulation to locate users' whereabouts, but as the chips become more common and more sophisticated, GPS is proving to be not only handy and accurate but also the basis for new services. Many startups have formed around location-based services. Want a date? Never mind who's compatible and who's nearby? Need to get a dozen people all in one place? Both Buddy Beacon tell you where your friends are in real time.

Of course, not everyone is thrilled about LBS: Worries about surreptitious tracking or stalking are commonplace, as is the possibility of a flood of spam messages being delivered to your phone.

When is it coming? LBS is growing fast. The only thing holding it back is the slow uptake of GPS-enabled phones (and carriers' steep fees to activate the function). But with iPhones selling like Ben & Jerry's in July, that's not much of a hurdle to overcome. Expect to see massive adoption of these technologies in 2009 and 2010.