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willowswolf
Vice Captain

PostPosted: Fri Nov 21, 2008 7:30 pm


Pen Pals

Perhaps not surprisingly, Osterhout’s long career of designing spy and military gadgets has made him quite qualified to create cool toys. One is the Machina Power Penz line of fully functioning ballpoint pens, which convert into dart guns, telescopes, invisible-ink writers, infrared walkie-talkies and more. Guaranteed to be a hit with any budding James Bond.
PostPosted: Fri Nov 21, 2008 7:31 pm


Bond’s Hidden Edge

While many of Bond’s gadgets seem far-fetched, Osterhout knows that they aren’t far removed from the world of spy versus spy. One such gadget is the Tekna Hidden Edge pocket knife pictured above.

willowswolf
Vice Captain


willowswolf
Vice Captain

PostPosted: Fri Nov 21, 2008 7:34 pm


Watch Out

Watches have always been an essential part of Bond’s wardrobe and weaponry. Like 007’s Rolex, Seiko and Omega watches over the years, Osterhout’s Machina Laser Pointer timepiece looks like an ordinary wristwatch but when attached to an agent’s weapon of choice it allows precise aiming – and timing – of a “target.”
PostPosted: Thu Nov 27, 2008 7:55 pm


I think some people are tired with short hand thats why so many new phones have full key boards so people can go back to full words and correct spelling

warriorgirl17


magicdarkvamp
Crew

PostPosted: Wed Feb 04, 2009 8:31 pm


Keyboard Learns, Self-Adjusts to Your Typing Style
By Melissa J. Perenson, PC World

We all know about the need to take breaks stave off muscle fatigue, but let's face it: Hours can pass while we stay in the same seat, pounding on our keyboards. Smartfish Technologies is bringing a new, smarter keyboard to market in March. The wired keyboard, expected to sell for $150, automatically adjusts itself over the course of a day.

For every hour of work, the keyboard makes some movement; it adjusts side to side within a space of about 1.5 inches. It also flexes and extends up and down to help promote blood flow. After about 20,000 keystrokes, the keyboard will move more frequently to help further mix things up. The keys vary in size, because of the curve in the keyboard, and to promote variation among your typing movements.

As a touch typist, I found the protoype keyboard felt comfortable, and the key positions convenient. I look forward to trying the real thing when it's ready to ship later this year. The company also expects to offer a mouse, too, based on similar design principles.
PostPosted: Mon Feb 09, 2009 9:10 pm


One small step for a man, one giant leap for teleportation
By Dong Ngo, CNET News

We've still got a long way to go before human beings can be beamed from one place to another "Star Trek"-style, but a team of scientists at the University of Maryland has achieved, nonetheless, a milestone in teleportation.

According to the Web site LiveScience, the university's Joint Quantum Institute for the first time was able to teleport information between two separate atoms across a distance of a meter -- about one step for an adult.

Generally, teleportation works thanks to a remarkable quantum phenomenon called entanglement, which occurs only on the atomic and subatomic scale. Once two objects are put in an entangled state, their properties are inextricably entwined. In layman's terms, if they are in entangled mode, what you "see" on one is what you get on the other.

The JQI team set out to entangle the quantum states of two individual ytterbium ions so information embodied in one could be teleported to the other. Each ion was isolated in a separate high-vacuum trap, suspended in an invisible cage of electromagnetic fields and surrounded by metal electrodes.

After that, the experiment worked like this: Single photons from each of the two ions in separate traps interacted at a beam splitter. When both detectors recorded a photon simultaneously, the ions were entangled. At that point, ion A was measured, revealing exactly what operation had to be performed on ion B to teleport ion A's information (see illustration above).

It's important to note that the achievement is not any form of conventional communication. This is because in teleportation no information pertaining to the original object actually travels to the other. Instead, the information measured from the first object appears on the second object.

The research was supported in part by the Intelligence Advanced Research Projects Activity program under U.S. Army Research Office contract.

It looks like the military's interest in teleportation remains strong. Who knows? This might mean we'll catch Osama bin Laden soon.

adesma
Crew


adesma
Crew

PostPosted: Fri Mar 13, 2009 8:21 pm


Science moves a step closer to mind reading
Scanner measuring blood flow can 'read' spatial memories

updated 5:42 p.m. PT, Thurs., March. 12, 2009

LONDON - Scientists have shown for the first time that it may be possible to "read" a person's mind simply by looking at brain activity.

Using a modern scanner to measure blood flow, British researchers said on Thursday they were able to tell where volunteers were located within a computer-generated virtual reality environment.

"Surprisingly, just by looking at the brain data we could predict exactly where they were," Eleanor Maguire of the Wellcome Trust Center for Neuroimaging at University College London told reporters.

"In other words, we could 'read' their spatial memories."

The discovery opens up the possibility of developing machines to read a range of memories, although Maguire said the risk of "intrusive" mind reading was still a long way off.

Instead, she believes the discovery, reported in the journal Cell Biology, will help research into memory disorders such as Alzheimer's by shedding light on how the hippocampus region of the brain records memories.

Maguire and colleagues used a technology known as functional magnetic resonance imaging, or fMRI, which highlights brain regions as they become active.

By scanning the brains of people as they played a virtual reality computer game they were able to measure the activity of certain neurons in the hippocampus, a region known to be critical for navigation and memory.

The research paves the way for analyzing how other thoughts — including fuller memories of the past or visualizations of the future — are encoded across neurons.

That could eventually mean using fMRI for forensic examination of a whole host of memories and thoughts, opening up a potential ethical can of worms.

For the moment, however, the technology only works with willing volunteers and fellow researcher Demis Hassabis said it would be at least 10 years before forensic applications became a possibility.

"It's a long way off before that kind of technology is going be possible where you can read someone's thoughts in a single short session, when they don't want to be cooperative," he said.
PostPosted: Mon Mar 16, 2009 8:47 pm


'Sexting'

According to one survey, 21 percent of teenage girls and 18 percent of teenage boys are doing it. "Sexting" involves sending or posting sexually charged messages, usually photos, via cell phone.
But as a couple of recent cases illustrate, "tech sex" can lead to big trouble:

Teacher Christy Lynn Martin, 32, was arrested for sending nude photos of herself to a 14-year-old male student.

Then there's the tragic case of Jesse Logan, 18, who killed herself after her ex-boyfriend sent nude photos of her to other kids at school. Jesse was relentlessly harassed by these students. When it didn't stop, she hanged herself.

So, what's a grown-up to do?

Bone up on the top 50 messaging acronyms teens are likely using.

Know the warning signs of a suicidal teen.

And be able to translate this message:

POS
Parent Over Shoulder or Point of sale

DDML
Drunk Dial Me Later

TDTM
Talk Dirty to Me

r u FOL?
Fond of Leather

143!
"I Love You." One letter in I, Four in Love, and three in You. Musiq made a song about it.

adesma
Crew


adesma
Crew

PostPosted: Mon May 18, 2009 6:22 pm


'Star Trek' Gear Fit for a Trekkie Lifestyle
When a Spock action figure just won't do, some Trekkies go hard-core and buy the real stuff. Here is a look at 'Star Trek' gear for an out-of-this-world lifestyle.


'Star Trek' Gear for Serious Trekkies

Real Trekkies don’t just settle for a James T. Kirk action figure, they plop down $2,200 for a replica of Captain Kirk's chair from the bridge of the starship Enterprise.

With Paramount Pictures’ “Star Trek” opening weekend making it a monster hit, we figure we’re in for some serious geek frenzy. To pay homage to the movie’s premiere, we decided it’s time to help Trekkies get serious about their obsession by putting together a collection of inspirational "Star Trek" gear. Mind you, this is not memorabilia, but "Trek" gear for everyday use.

You may want to cool your warp-drive engines, however, because, sadly, not everything assembled here is for sale -- so please don’t blame us if you can’t find that "Star Trek" USB Web Cam shaped like the Enterprise. The good news is that you can spork over just $20 for a "Star Trek" eating utensil.

-- By Brennon Slattery, PC World

(continued in next post)
PostPosted: Mon May 18, 2009 6:33 pm


'Star Trek' Cell Phones and Peripherals

This "Star Trek" USB Communicator Internet Phone ($44) looks just like the authentic "Star Trek" Communicator. The USB phone works with VoIP services iChat, Skype, MSN, and AIM. This space-age beauty comes loaded with 21 different sound effects and a moire LCD screen that spins when the cover is open, making you believe you're truly going where no one has gone before -- even though you're just talking to your AIM buddy.

Give Your iPhone Some 'Trek' Style

Transform your iPhone into an authentic-looking Tricorder (free) using your iPhone's Web browser. Simply follow this link on your iPhone or iPod Touch. And then tap on the various of buttons for different effects, such as data and biology sensing mechanisms.

Give Your iPhone an LCARS Look

Is your iPhone UI giving you the doldrums? If you’re comfortable hacking your iPhone, you can beam some "Star Trek" excitement onto your phone. This LCARS Summerboard theme will make your iPhone’s interface mimic something you might see on the "Star Trek" Enterprise. LCARS, for all you non-trekkies, is short for Library Computer Access/Retrieval System and is the highly stylized operating system used on the "Star Trek" Enterprise. This free theme does require the iPhone Summerboard hack -- something you may not want to get invested in.

iPhone Case Fit for Kirk

We admire the devoted fan who created this neat-looking iPhone case to show his allegiance to the "Star Trek" series. Though there are no details on how it was made, from the looks of it, it's pretty simple to make. If you don't have an old "Star Trek" pin, as this fan did, just get a "Star Trek" decal and glue it to your phone. I wonder if that voids the warranty…


'Star Trek' Computer Add-Ons

We are still waiting for an official launch date for the "Star Trek" USB Web Cam from the folks at Dream Cheeky. In the meantime we can only dream of the "Star Trek"-inspired video conferencing we’ll do with this plug-and-play space-age Webcam. According to reports, the cam sports red lights from the engines when in use and is compatible with most online chat services.

Captain's Log, Stardate…

"Because of the intensity of the script, at times Shatner brought his work home with him." This hilarious mouse pad ($13.99) is sure to liven up your day with its mangled grammar and poo-poo humor that's bound to engage you in wordplay with Shatner.

Set Your PC Mouse to Stun

Now you can set your computer mouse to stun. This "Star Trek" Type 1 Phaser Mouse ($90) not only makes "action phaser sounds" but also lets you shoot a laser beam. We were hoping it might actually work as a self-defense weapon, considering its $90 price tag.

Geek Eye for the Normal Guy

We were so inspired by this next series of home-decor-related "Trek" items, we dreamed up a new basic cable TV show called Geek Eye for the Normal Guy. In this show a group of lovable sci-fi devotees visits an average person’s home each week. Next, the Geek Eye squad shows how to add some far-out flavor to any 21st century decor and wardrobe. Here we see a satin nickel-finish "Star Trek" chandelier ($189). Though the official product description says nothing about "Star Trek", it's glaringly obvious where the artist found his or her inspiration.

'Trek' Theater

This diehard Trekkie created the ultimate 'Trek' home theater using 15 different tech sources (see the list here) -- no doubt for what must have been thousands and thousands of dollars. The end result: the ultimate forever-bachelor pad.

Kirk Throne

If you don't have the dough to spend on a complete "Star Trek" home theater setup, you can at least own your own Captain Kirk's Chair ($2,200). As an added bonus, this "'Trek" throne of power comes with a series of buttons. We're still trying to figure out whether those buttons actually do anything.

Smells a Bit Nerdy to Me

We have no idea how a "Star Trek" commander smells, but I imagine it's something like these colognes, Tiberius and Red Shirt, For lady Trekkies, there is Pon Farr, an out-of-this-world scent guaranteed to impress any like-minded Trekkie. These range from $30 to $40.

'Trek' Threads

Nothing shows your "Star Trek" devotion more than dressing in your very own "Star Trek" threads. These shirts, sold at the aptly-named Star Trek Mall, come in various styles. There is the casual T-shirt (around $20) for wearing at home, and then there is the "Star Trek: The Next Generation" Uniform for the office ($32). As an aside, we love the “What Would Spock Do?” T-shirt ($22).

'Star Trek' Corset

T-shirts and full-body uniforms not enough? Want something sexier? Check out this "Star Trek" corset ($200) available at the Etsy shop. If you can talk your girlfriend into squeezing into this beauty, you know you’ve found the right star mate.

Live Long and Wear These Funky Gloves

Sadly we couldn't find pricing or availability for these Spock-tastic "Star Trek" gloves. Clearly modeled after Spock's famous hand signal ("Live long and prosper"), these are gloves to keep the hands of even the coldest Vulcan warm.

Keeping Time in 'Trek'

Modeled after the LCARS display of the Enterprise's computer, this $140 watch (currently sold out) looks so futuristic it just might be unreadable. Seriously, how would you tell time on this thing?

Keeping 'Trek' Time

Carlos Perez designed this "Star Trek" watch 10 years ago for Fossil. Perez says it was a limited run, so you'd have to be a very savvy eBay user to find one nowadays. But any "Trek" fan worth his or her weight should start hunting, because they literally don't make 'em like that anymore.

Spork in the Road

Good news and bad news! The "Star Trek" Spork ($20) once ran only as a limited-edition collector's item -- and sold out quickly. But the good news, according to Think Geek, which sold the item, is that the Spork will be back soon for sale.

Serious Sound

Looking for a pair of suitable speakers to crank some of Leonard Nimoy's vocal stylings? Here is the perfect set. The makers of Davone Audio's $5,595-a-pair speakers don't explicitly say it's Trekkie merchandise, but we aren't fooled. This award-winning speaker system was clearly engineered by a fan of the "Star Trek" swoop logo.

'Star Trek' Afterlife

Now you can jet into the "Star Trek" afterlife with either a "Star Trek"-themed urn or casket (prices not set). The urn is modeled after some part of the ship's machinery. We suppose the casket is, as well -- maybe a photon torpedo.

adesma
Crew


willowswolf
Vice Captain

PostPosted: Mon Jun 15, 2009 2:43 pm


The World's Weirdest Mice
A mouse is such a simple device that not even the worst inventor could screw it up, right? Wrong! We'll give you 13 examples.

Input Insanity
“Build a better mousetrap and the world will beat a path to your door,” the cliché says. Try to build a better mouse, though, and there’s a good chance that people will smile nervously and edge away from your door. At least, that’s the case with many of the “improved” mice we found – they’re not so much better as just plain weirder. And then there are the mice ─ three of them! ─ that might just get you fired. Read on for more about the Peep Hole Mouse, the Busty Mouse and the Instant RSI Mouse.

A Better Way to Write
Ever heard of the Slow Food movement? The Hanwang T&Mouse is perfect for my new Slow Work movement. If I use a keyboard, there’s a very real danger I could finish a story in a day, thus conditioning my boss to expect me to produce something every day to follow. Sounds exhausting! But if I write my stories by painstakingly drawing the characters with a stylus on the matchbook-size, touch-sensitive pad on my mouse, one story could easily take weeks. That’ll cure my boss of any unreasonable expectations.

The Peep Hole
The iris-scan authentication system has become a staple of modern movies, from "The Incredibles" to "Angels and Demons". But in your average spy thriller, an iris scan always looks cool and cutting-edge. Not so much with the Qritek Iribio mouse. Instead of looking like Tom Cruise completing an impossible mission, our mouse model above looks more like Joe Perv ogling tiny images of French underwear models. That’s too high a price to pay for security.

Torso Mouse
Entry No. 1 in our list of Mice That Will Get You Fired comes from Swiss trinketeer Pat Says Now, maker of a wide array of novelty computer mice. (Some of these torsos mice come clothed in tiny, tight-fitting sweaters emblazoned with the logos of various soccer teams, but as the product description reads, “Your mouse needs to take off her shirt for working properly.”) And if using it doesn’t earn you a trip to human resources, well, someone at your place of employment is not working properly.

Not surprisingly, each breast on the torso is a button. The company would have added a scroll wheel somewhere in between, but it's saving that for the triple-breasted "Total Recall" edition.

'Careful ─ He’s a Got a Mouse!'
Entry No. 2 on our list of Mice That Will Get You Fired is this mouse in the shape of a Sig Sauer P230 handgun from CyberGun. While it doesn’t in fact shoot any projectiles, it should be creepy enough to keep most co-workers from interacting with you at all ─ until security comes to escort you from the premises

Electro-Mouse
Mice That Will Get You Fired, No. 3 ─ While the mere presence of this Thanko Kinniku mouse on your desktop shouldn’t get you in trouble, numerous pitfalls still await you. Using the mouse is supposed to stimulate your muscles with small electric shocks via stick-on electrodes, causing your muscles to contract involuntarily. It's like getting a massage, but not.

How’s that going to get you fired? Try either of these phrases in your cube farm and see where they get you: “Pardon me, would you mind lifting my shirt and rearranging my electrodes?” or “I find your use of my mouse quite stimulating!”

Super Mouse Pain
Introducing the most anti-ergonomic mouse ever produced: pixelated Mario. In case using Super Mario does not immediately produce super repetitive stress injuries, you can also try the Invincibility Star and Goomba mice from the same sadistic company.

A Calculator in Every Mouse by 2020
The LS-100TKM from Canon flips open like a 1990s cell phone to reveal a secret integrated calculating device (aka a "calculator") and numeric keypad. Don’t have any actual math questions at the moment? Type in "1134" and hold it upside down. You’re a badass!

Who's the Boss?
To humorously paraphrase the former hit song:

“Who let the dogs out (to sit behind a bizarre miniature desk that’s actually a pretty much useless plastic mouse)?

Who?

Who?

Who?

Who?”

Seriously: Who did this, and, for the love of humanity, why?

Real Computer Bugs
If there were any insect rights groups, they would be up in antennae over these new mice that contain real animals imprisoned in clear acrylic resin. Pictured here are the beetle and spider models; also available are mice containing real starfish, scorpions and crabs. It's a great idea if you don't mind resting your palm on a dead critter.

Foolproof Security
We all want to secure our PCs, but few of us want to deal with the hassles required, like remembering long, complicated passwords or peering into a tiny iris scanner on the side of our mouse. That’s where the amazing Zalman FG-1000 FPSGun mouse comes in. You can make your password “password” and even the most sophisticated data thieves won’t be able to get a thing from your PC ─ they’ll be too stumped by the mouse. I don’t care if your computer is packed with CIA secrets, no criminal will be willing to invest the hours and hours of frustrating trial and error he would have to put in just to figure out how to left-click. Call it security through obnoxious design.

Help, Your Palm Stinks!
The LED Message Mouse not only contains an integrated fan to cool your sweaty palm during a "Quake IV" tournament, but it also displays a message on said rotating fan using LEDs. Sadly, it's a message that you'll never see … because you'll be covering it with your sweaty palm.

Button Overload
Konami designed the Pop'n Music Be-Mouse to double as a game controller for playing ─ what else ─ Pop'n Music, a Japanese rhythm game. But failing that, you could always use its numerous buttons to trigger something far more exciting: Excel macros.

Check Your Pulse
The ASUSTek Vito W1 mouse keeps track of your heart rate and reports it to an application on your computer. If your pulse is too high, a yellow smiley face frowns at you. If your pulse is too low, you may be dead. But you didn't need an ASUSTek Vito W1 to tell you that.
PostPosted: Thu Jun 18, 2009 2:40 pm


How to Make Your Car Last Longer
While you can’t keep it on the road forever, here are 10 tips that can extend your car’s life and help maintain its value when you sell or trade it.
By Staff of MSN Autos

Getting from point A to point B by car costs a certain amount of dough, and thanks to a crumbling U.S. economy it takes more of your hard-earned money than ever before to do so. But while you can’t always control ownership costs such as fuel, repairs and insurance rates, one thing you do have power over is how long your 4-wheeled friend stays on the road before you have to send it to that great junkyard in the sky. To help, here are 10 tips that will keep your ride rolling well into its golden years.

1. Change Vital Filters and Fluids

Even the most mechanically challenged drivers know to change a car’s oil and oil filter on a regular basis. But other fluids (antifreeze, brake and transmission, for example) and filters also need regular maintenance. This is essential because over time they, too, lose important properties — such as their ability to remove heat and to lubricate, as well as the ability to prevent rust and freezing.

Changing your air filter helps your car breathe easier and its engine last longer. An engine needs an exact mixture of fuel and air in order to run, and all of the air enters the system through the air filter. Its purpose is to prevent dirt and other foreign particles from entering and possibly damaging the engine. “If your air filter is clogged, your engine is not performing properly,” says Jack Nerad, editorial director and executive market analyst for Kelley Blue Book. “It also hurts your fuel economy because the engine is working harder to get more air.”

2. Check Your Cooling System

Making sure your car’s cooling system is working properly and coolant levels are correct can potentially save you thousands of dollars in repairs. “A cooling-system failure can result in your engine literally melting down,” Nerad warns. “Without proper coolant and maintenance of hoses, you can have lethal consequences.”

3. Take Proper Care of Your Tires

Tires are often the most neglected part of a car, and can be the least expensive to maintain. Take tire inflation, for instance. “Most people don’t pay much attention to keeping their tires at the right inflation pressure,” Nerad says. “And it’s not only bad for the car, the tires and fuel economy, but it’s also a safety issue. The simple step of keeping the tires up to proper pressure is valuable all the way around, and it essentially costs almost nothing.” Also, don’t forget to rotate your tires. Tire Rack suggests doing it every 3,000 to 5,000 miles, even if the tires don't show signs of wear. This will help to ensure that your car stops properly, and is a job that can be done in your own driveway.

Read the article on Tire Safety from Consumer Reports.

4. Pay Attention to the Gauges

If there is a problem with your oil pressure, cooling system or any other major system, your car’s gauges will tell you — if you’re paying attention to them. “The vast majority of people don’t,” Nerad says. “That’s why manufacturers went to ‘idiot lights’ to give a clear indication of when there’s a problem.”

Read the Consumer Reports article on What To Do If The 'Check Engine' Light Goes On

5. Find a Mechanic You Trust

Find a repair shop and mechanic you trust. “And let that shop service your car all the time,” says Dave Jones, owner of Jones Automotive in Green County, Pa., and co-host of the Web site AskAutoPro.com. “When you get sick, you don’t go to a different doctor every time. Your doctor knows you from top to bottom, inside and out.” A good mechanic will get to know your car, look it over the same way each visit, and thus spot potential issues, Jones adds. Plus, having a good working relationship with your mechanic will enable you to make wise decisions when the time comes — and you won’t have any doubts about the truthfulness of the advice.

6. Get Regular Checkups

While your owner’s manual will have a maintenance schedule, another advantage of using the same mechanics on a regular basis is that they will be able to make sure you stick to that schedule — and take care of things the manual may not include. “If you go to different places each time you have your car serviced, they won’t know the last time you had something done,” says Aaron Clements, owner of C&C Automotive in Augusta, Ga., and a 31-year auto-repair veteran. “So you may end up paying for unnecessary repairs. Most shops have electronic records, so they know when each service was performed. The scheduled maintenance charts in owners manuals tell only part of the story. So it’s also a benefit to have a relationship with a service adviser who knows your vehicle and when to perform service in addition to what’s in the owner’s manual.”

And don’t put off the small things. A small problem can quickly balloon into a major catastrophe. For instance, a worn hose can be a simple replacement. Put off dealing with it until the hose bursts and you could have a nightmare on your hands, with associated financial implications.

7. Drive Smarter

The way you drive has an effect on how long your car — and your gas — will last. “You not only save wear and tear by having good driving habits, but also fuel,” Clements says. So drive gently. Accelerate slowly. Anticipate braking so you can avoid panic stops. Give your car time to warm up in cold weather so the oil is freely circulating through the system and fully lubricating internal components. All of these things will lessen the wear and tear on your car and possibly enhance fuel efficiency.

Also, make fewer short trips. Jaunts of less than 10 minutes can be particularly hard on a car because the engine never has a chance to heat up properly, which allows condensation to build up inside the engine and exhaust. When mixed with metal and oxygen, water will cause rust, which is bad for cars. Condensation inside the engine will also dilute the oil that lubricates it. Again, this is bad for the car.

8. Lose Some Weight

Extra pounds place extra demand on your vehicle’s powerplant, and can create suspension and braking issues. So don’t drive around with a lot of nonessential stuff in your car. Also, remove anything that causes additional aerodynamic drag, such as a bug shield, roof rack or cargo carrier. These have the same effect as adding weight; that is, they increase the demand on your engine, causing premature wear and tear and reducing your car’s fuel efficiency.

9. Keep It Clean

Kelly Blue Book’s Nerad also stresses taking care of the exterior of your car by regularly washing and waxing it. And don’t forget about the interior. “That’s an often overlooked area,” he says. “Spend time keeping it clean and clean-smelling without perfuming it, and vacuum the carpet on a regular basis. Get spills out immediately, because if you don’t they’re more difficult to remove.”

10. Keep It Under Cover

Nerad also suggests storing your car in a garage or under a carport or cover. “Keep your car out of the sun,” he says. “And keep it away from bird droppings and tree sap. Also be careful where you park to avoid dings,” he adds.

willowswolf
Vice Captain


willowswolf
Vice Captain

PostPosted: Wed Oct 07, 2009 8:11 pm


Salt and Paper Make Disposable Batteries
Eric Bland, Discovery News
Oct. 7, 2009

A piece of wet, salty paper doesn't look impressive, but cut it up, stack it up, and it can hold an impressive amount of energy.

With this in mind, scientists in Sweden have created a salt and paper battery that can hold up to one volt of electricity.

The scientists hope their battery will one day power remote, biodegradable sensors.

"We wanted to make a battery that was very simple and used the same material for both electrodes," said Leif Nyholm, a professor at Uppsala University in Sweden and co-author of a study that appeared in the journal Nano Letters. "To make it simple we just put NaCl (table salt) in."

The battery itself is as thin as a single piece of paper, but it is made up of multiple layers of cellulose, coated in a conductive polymer 50 nanometers thick, and sandwiched between layers of filter paper. Water conducts the chlorine ions to the negative electrode, and electrons to the positive electrode.

The whole flexible assembly, several millimeters thick, is wrapped in plastic.

The initial salt and paper battery prototype can generate one volt of energy. Stacking more layers should provide more voltage, says Nyholm, but gram for gram, the salt and paper battery isn't as powerful as its thin-film cousins that use lithium, cobalt or nickel. It does charge faster than these other metallic batteries, however.

The salt and paper battery won't be used to power a laptop or a cell phone. Its environmentally-friendly components will more likely be used for fabrics that heat up or remote sensors that monitor temperature or humidity.

The battery doesn't just degrade into harmless products, it actually helps solve an environmental problem.

The traditional source of paper -- wood pulp -- doesn't have enough surface area for ion exchange. Instead, the scientists turned to a noxious marine algae that clogs up harbors. The marine algae produces cellulose with 100 times the surface area, compared with terrestrial plants.

"The utilization of the nanostructure of this cellulose preparation was a bright idea," said Gyorgy Inzelt, an expert on thin films from Eotvos Lorand University in Hungry.

Another bright idea would be to use the salt and cellulose assembly as a capacitor, or device able to dump all its electrical charge at once, instead of a battery, which releases power more slowly.

As either a battery or a capacitor, Inzelt suggests the device could be useful in pacemakers, nanomotors, optical displays and other devices, but that more exhaustive testing is required before any commercial device can be produced.

"There are so many things we want to do with an actual commercial device," said Nyholm, "But we still have a lot of work to fully characterize its performance."
PostPosted: Mon Dec 07, 2009 8:44 pm


V for victory
Dec 3rd 2009
By: PALO ALTO
From The Economist print edition

Copying birds may save aircraft fuel


BOTH Boeing and Airbus have trumpeted the efficiency of their newest aircraft, the 787 and A350 respectively. Their clever designs and lightweight composites certainly make a difference. But a group of researchers at Stanford University, led by Ilan Kroo, has suggested that airlines could take a more naturalistic approach to cutting jet-fuel use, and it would not require them to buy new aircraft.

The answer, says Dr Kroo, lies with birds. Since 1914, and a seminal paper by a German researcher called Carl Wieselsberger, scientists have known that birds flying in formation—a V-shape, echelon or otherwise—expend less energy. The air flowing over a bird’s wings curls upwards behind the wingtips, a phenomenon known as upwash. Other birds flying in the upwash experience reduced drag, and spend less energy propelling themselves. Peter Lissaman, an aeronautics expert who was formerly at Caltech and the University of Southern California, has suggested that a formation of 25 birds might enjoy a range increase of 71%.

When applied to aircraft, the principles are not substantially different. Dr Kroo and his team modelled what would happen if three passenger jets departing from Los Angeles, San Francisco and Las Vegas were to rendezvous over Utah, assume an inverted V-formation, occasionally swap places so all could have a turn in the most favourable positions, and proceed to London. They found that the aircraft consumed as much as 15% less fuel (with a concomitant reduction in carbon-dioxide output). Nitrogen-oxide emissions during the cruising portions of the flight fell by around a quarter.

There are, of course, kinks to be worked out. One consideration is safety, or at least the perception of it. Would passengers feel comfortable travelling in convoy? Dr Kroo points out that the aircraft could be separated by several nautical miles, and would not be in the unnervingly cosy groupings favoured by display teams like the Red Arrows. A passenger peering out of the window might not even see the other planes. Whether the separation distances involved would satisfy air-traffic-control regulations is another matter, although a working group at the International Civil Aviation Organisation has included the possibility of formation flying in a blueprint for new operational guidelines.

It remains to be seen how weather conditions affect the air flows that make formation flight more efficient. In zones of increased turbulence, the planes’ wakes will decay more quickly and the effect will diminish. Dr Kroo says this is one of the areas his team will investigate further. It might also be hard for airlines to co-ordinate the departure times and destinations of passenger aircraft in a way that would allow them to gain from formation flight. Cargo aircraft, in contrast, might be easier to reschedule, as might routine military flights.

As it happens, America’s armed forces are on the case already. Earlier this year the country’s Defence Advanced Research Projects Agency announced plans to pay Boeing to investigate formation flight, though the programme has yet to begin. There are reports that some military aircraft flew in formation when they were low on fuel during the second world war, but Dr Lissaman says they are apocryphal. “My father was an RAF pilot and my cousin the skipper of a Lancaster lost over Berlin,” he adds. So he should know.

magicdarkvamp
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Angelzfury
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PostPosted: Mon Dec 21, 2009 9:13 pm


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