Invisibility - Done

Invisibility block brings cloaking technology a step closer
Scientists in Singapore have discovered a way to make objects disappear from view by bending light around them. The technology has potential for use in the military and for surveillance, but could also be applied for other purposes such as disguising unsightly objects on buildings. Rob Muir reports.




Video url :Invisibility

FreeOnline Courses To Learn Electronics

8 Awesome FreeOnline Courses To Learn Electronics

Want to take a course and be a pro in an electronics related field? Hereyou go... These courses on Electronics will help you achieve your goal. Thelist includes courses from MIT and IITs as well. And yes, they are all free andaccessible to all! So pack your bags and get going!

1. ElectronicsTheory.com

Thewebsite provides detailed knowledge on quite a few subjects related toelectronics for free, as it believes that 'education doesn't have to beexpensive'. It also stores some DIY kits for electronics, robotics, et al.That's not all! It also incorporates courses on some programming languages.

2. fearofphysics.com

Wantto build your own electronics projects? Heard of the Arduino? Resistors? andTransistors? The website explains all of these things to you! The videos here(each less than 10 minutes long) are meant to be watched while you actuallybuild and do the electronics experiments described. So to get started, purchasethese items, which are a list of all parts used in this video sequence.

3. freevideolectures.com

Thissite includes video lectures from IIT Bombay, IIT Madras, IIT Delhi, IIScBangalore, etc. These videos talk about everything in electronics, fromsemiconductor to VLSI data conversion circuits and digital electronics. So dospend some time on these tutorials to deep dive into your favourite subject.

4. Circuits &Electronics 6.002x

6.002x(Circuits and Electronics) is an experimental on-line adaptation of MIT’s firstundergraduate analog design course: 6.002. This course is running, free ofcharge, for students worldwide.

5. 101science.com

Thewebsite claims to be the easiest, fastest way to learn basic electronics. Nosign-up requirements and it is free. The menu table here provides easy accessto many interesting electronics topics. Print the menu table so you can checkoff the items as you study them and track your progress. You can enhance,expand and speed your learning by purchasing some of the book selectionsmentioned below. Take your time and enjoy.

6. onlinevideolecture.com

Thewebsite covers detailed video lectures on topics ranging from microprocessorsand microcontrollers to VLSI circuits and wireless communication.

7. Open LearningInitiative

CarnegieMellon's Open Learning Initiative (OLI) offers courses in a wide range ofdisciplines. Technical courses include engineering statistics, mediaprogramming, principles of computing and secure coding. Carnegie Mellon's OLIhad had 10,000 students enrolled in 2011. In addition to lectures, the websiteoffers resources like learning activities, quizzes and itemized lists ofobjectives. Like most of these websites, there is no interaction withinstructors, nor are course credits or certificates offered.

8. MassachusettsInstitute of Technology (MIT)

TheMassachusetts Institute of Technology (MIT) Open Courseware (OCW) website has2,100 free courses online using a combination of lecture notes, audio and videoresources. Engineering courses cover just about every discipline, fromaeronautics and astronautics to mechanical engineering and nuclear science.

Sugar-powered biobattery

Sugar-powered biobattery has 10 times the energy storage of lithium

Your smartphone might soon run on enzymes

As you probably know, from sucking down cans of Coke and masticating on candy, sugar — glucose, fructose, sucrose, dextrose — is an excellent source of energy. Biologically speaking, sugar molecules are energy-dense, easy to transport, and cheap to digest. There is a reason why almost every living cell on Earth generates its energy (ATP) from glucose. Now, researchers at Virginia Tech have successfully created a sugar-powered fuel cell that has an energy storage density of 596 amp-hours per kilo — or “one order of magnitude” higher than lithium-ion batteries. This fuel cell is refillable with a solution of maltodextrin, and its only by products are electricity and water. The chief researcher, Y.H. Percival Zhang, says the tech could be commercialized in as soon as three years.

Now, it’s not exactly news that sugar is an excellent energy source. As a culture we’ve probably known about it since before we were Homo sapiens. The problem is, unless you’re a living organism or some kind of incendiary device, extracting that energy is difficult. In nature, an enzymatic pathway is used — a production line of tailor-made enzymes that meddle with the glucose molecules until they become ATP. Because it’s easy enough to produce enzymes in large quantities, researchers have tried to create fuel cells that use artificial “metabolism” to break down glucose into electricity (biobatteries), but it has historically proven very hard to find the right pathway for maximum efficiency and to keep the enzymes in the right place over a long period of time.

50 most popular technology quotes

50 most popular technology quotes

The most technologically efficient machine that man has ever invented is the book. –Northrop Frye Technology is a word that describes something that doesn’t work yet. –Douglas Adams Just because something doesn’t do what you planned it to do doesn’t mean it’s useless. –Thomas Edison It has become appallingly obvious that our technology has exceeded our humanity. –Albert Einstein One machine can do the work of fifty ordinary men. No machine can do the work of one extraordinary man. –Elbert Hubbard All this modern technology just makes people try to do everything at once. –Bill Watterson We are stuck with technology when what we really want is just stuff that works. –Douglas Adams Humanity is acquiring all the right technology for all the wrong reasons. –R. Buckminster Fuller It’s supposed to be automatic, but actually you have to push this button. –John Brunner Books may look like nothing more than words on a page, but they are actually an infinitely complex imaginotransference technology that translates odd, inky squiggles into pictures inside your head. –Jasper Fforde I think that novels that leave out technology misrepresent life as badly as Victorians misrepresented life by leaving out sex. –Kurt Vonnegut Technological progress has merely provided us with more efficient means for going backwards. –Aldous Huxley The human spirit must prevail over technology. –Albert Einstein Technology… the knack of so arranging the world that we don’t have to experience it. –Max Frisch

Technology History Facts

Technology History Facts

Fact 1: The first hard drive by IBM

The first hard drive was made by IBM in 1956 and was called IBM Model 350 Disk File. The first-generation storage unit was huge, with a cabinet the size of a cupboard that held 50 24-inch disks and held an impressive 5MB of data.

Fact 2: RadioShack

RadioShack was one of the first companies to start the PC revolution in the mid 70′s with its TRS-80.

What most people don’t know is that RadioShack used to be called “Tandy Radio Shack & Leather” after it was acquired by Tandy, a leather goods company, in 1963.

Fact 3: The first palmtop computer

The Atari Portfolio was released in 1989 and was the world’s first palmtop computer. Two years later it appeared in the film Terminator 2, where it was used by John Connor to hack an ATM and retrieve the key to the vault in the Cyberdyne lab.

Fact 4: The first mouse

Many think the first mouse was invented in 1970 at Xerox PARC. However, the first mouse was invented by Douglas Engelbart in 1963. It was a wooden shell with two metal wheels.

Fact 5: The digital circuit

Claude Shannon, the “Father of information theory”, invented the digital circuit when he was only 21, during his master’s degree.
Shannon loved inventions – check out his “Ultimate Machine“. When you turn on the switch, an arm pops out and turns it back off.

Fact 6: The Apolo 11 computers

How powerful were the computers that took us to the moon? Turns out that the Apolo 11 computers had less processing power than a modern cellphone!

Ten Healthcare Mistakes and How to Avoid Them

Ten Healthcare Mistakes and How to Avoid Them

 


Ten Healthcare Mistakes and How to Avoid Them

Mistake #1: Assume that your body is none of your business and hand it over to a doctor to “fix.”Nobody knows your body better than you, and when you hand over your power, you put your health at risk.

The Solution: Trust what you know about your body, listen to the wisdom of your Inner Pilot Light, and make sure you stay the boss of your body.

Mistake #2: Keep your doctor in the dark. Those medical forms are there for a reason. Even if you’re embarrassed, ashamed, or afraid your doctor will betray your confidence, it’s critical that your doctor knows the whole story.

The Solution: Regulations require your doctor to keep everything you say in confidence, but just to make sure, ask your doctor if everything you say will stay private. When your doctor reassures you—and assuming you can trust your doctor—tell the truth, the whole truth, and nothing but the truth. (If you don’t feel you can trust your doctor not to judge you, criticize you, or betray your trust, find another doctor—pronto!)

Mistake #3: Expect your doctors to communicate with each other. In a perfect world, they would sit around a healing roundtable, comparing notes and brainstorming about what’s best for you, but in the real world of fax machines, lost paperwork, and overbooked schedules, don’t count on it.

The Solution: Keep copies of all your medical records and present them anytime you see someone new. When you get a new laboratory test or radiology study, ask for a copy for your file and follow up if you don’t receive it. Make sure you bring your folder to all doctor’s appointments. It’s also helpful if you keep a detailed record of all your symptoms, including a timeline and what makes your symptoms better or worse.

Mistake #4: Show up for your health care without doing your homework. Remember, your doctor only has so much room in his or her brain for details of unusual symptoms or rare diseases. Hopefully, your doctor will do his or her own research, but even so, when it’s your disease, you may wind up knowing more about your illness than your doctor.

The Solution: Fully research your symptom or illness and print out copies of what you’ve learned to bring to your doctor’s visit (seek out trustworthy resources like WebMD, MayoClinic, and sites where you can get Q&A free of charge by MDs, such as Avvo.com). You can also use your research skills by checking out your doctor on sites like Yelp, Google searching your doctor, asking your doctor for references (keep in mind patient confidentiality), and enlisting the help of the librarian at the hospital library.

Mistake #5: Fail to question your diagnosis or treatment plan and trust that whatever your doctor recommends is best for you, even if it goes against your intuition. When your doctor suggests a treatment plan, ask questions until you fully understand the risks and benefits of your options and feel qualified to make a decision.

The Solution: If the diagnosis or treatment doesn’t feel right, be respectful but speak up! And don’t be afraid to get a second opinion if you don’t feel confident that you’ve been given the right diagnosis and treatment plan. After all, it’s your body. Your life.

Mistake #6: Keep quiet when the front desk or medical assistant blocks your access to your doctor. It’s not fair, but it’s true that “the squeaky wheel gets the grease.”

The Solution: You have the right to communicate with your doctor! Your doctor is in the service industry and is in service to YOU (it’s not the other way around). Keep in mind that front desk or medical assistant jobs are often low paying and easily replaced, and people who work in these jobs may feel powerless in other aspects of their lives, wielding their power to the detriment of patient care. When interacting with the front desk or a medical assistant, remember that these people are your allies. Be kind and respectful, not entitled, make conversation with them when you’re there in person, and realize that they are the gatekeepers to your doctor’s time, and if you want access, it’s in your best interest to be polite. That said, if you call with an urgent issue (procrastination on your end doesn’t count) and you get stonewalled, demand to speak to your doctor. Often, the doctor doesn’t even know you’ve been trying to get through. It’s your right to get your needs met.

Mistake #7: Let your doctor’s ego bulldoze you. It’s your responsibility to take charge of your seven and a half minutes, show up as an equal partner in collaboration, identify when your doctor’s ego (we all have them) may be interfering with your optimal health, and communicate your needs.

The Solution: If your doctor’s ego is running the show and initiating better communication doesn’t solve the problem, be willing to seek out another doctor, even if it means paying cash to find the best possible health care. At the end of the day, there’s nothing more important than your health. You deserve the best, and the best doctors aren’t ruled by their egos.

Mistake #8: Stay quiet when your doctor discredits alternative healthcare methods that are actually working for you. If your doctor is dissing your acupuncturist, your homeopath, or your shaman, don’t just clam up.

The Solution: Explain that you’re receiving benefit from these providers and that you’ve chosen to have them on your team. Ask your doctor to willingly collaborate with these providers in an open, nonjudgmental way. If your doctor continues to call your other providers “quacks,” you might need to find a better fit. (Trust me, we’re out there!)

Mistake #9: Assume that a pill is always the solution. Patients are as responsible as doctors for the current expectation that every symptom can be solved with a pill.

The Solution: Be willing to investigate the root cause of your illness. Dig deep and ask yourself “What does my body need in order to heal?” If you listen up, you might just find that the real prescription lies much deeper, and a pill would only be a Band-Aid.

Mistake #10: Never question outcomes. If you don’t get the outcome you want, don’t instantly assume that’s as good as it gets. If you had surgery for back pain and your back still hurts, communicate. If the birth control pill only makes you bleed more, tell your doctor. If you feel even worse after the treatment you received, don’t be afraid to question the outcome.

The Solution: Communicate in as much detail as possible what is not working. Push the envelope. Get your doctor to hit the books but be willing to do your personal work too. Sometimes the solution lies not in some external treatment, but within you. Own your part in your illness, and you just might find that you make your body ripe for miracles.

Top 27 facts

Top 27 facts...

27. The cigarette lighter was invented before the match.

26. The average chocolate bar has 8 insect legs in it.

25. Right-handed people live, on average, nine years longer than
left-handed people do.

24. Its impossible to smoke oneself to death with weed. You won’t be
able to retain enough motor control and consciousness to do so after
such a large amount. (Common Sense)

23. Uncle Phil, from Fresh Prince of Bel-Air, did the voice of
Shredder in the TMNT cartoon.

22. Every drop of seawater contains approximately 1 billion gold atoms.

21. The US national anthem actually has three verses, but everyone
just knows the first one.

20. During World War II, IBM built the computers the Nazis used to
manage their death/concentration camps.

19. The total combined weight of the worlds ant population is heavier
than the weight of the human population.

18. The deadliest war in history excluding World War II was a civil
war in China in the 1850s in which the rebels were led by a man who
thought he was the brother of Jesus Christ.

17. Just about 3 people are born every second, and about 1.3333 people
die every second. The result is about a 2 and 2/3 net increase of
people every second. Almost 10 people more live on this Earth now,
than before you finished reading this.

16. Happy Birthday (the song) is copyrighted.

15. The number of people alive on earth right now is higher than the
number of all the people that have died. Ever.

14. The average American consumes 1.2 pounds of spider eggs a year and
eat 2.5 pounds of insect parts a year.

13. The Kamp Krusty episode of the Simpson’s was originally meant to
be made as the Simpsons movie.

Human Face Like Tree

12. Men can breastfeed babies.

11. There is a rare condition called Exploding Head Syndrome which
you’ve probably never heard of.

10. Scientists have determined that fungi are more closely related to
human beings and animals than to other plants.

9. In some (maybe all) Asian countries, the family name is written
first and the individual name written second (opposite of the America
method). That’s why Asian athletes like Yao Ming and Ichiro Suzuki
have Yao and Ichiro written on their jerseys. Those are their family
names and in America their names are written Ming Yao and Suzuki
Ichiro.

8. Abe Lincoln bought 50 cents worth of cocaine in 1860

7. A German World War II submarine was sunk due to malfunction of the toilet.

6. Washington State has the longest single beach in the United States.
Long Beach, WA.

5. The largest living thing on the face of the Earth is a mushroom
underground in Oregon, it measures three and a half miles in diameter.

4. The town of Los Angeles, California, was originally named El Pueblo
la Nuestra Senora de Reina de los Angeles de la Porciuncula.

3. 9 out of 10 people believe Thomas Edison invented the light bulb.
This isn’t true; Joseph Swan did.

2. Honey is the only food that does not spoil. Honey found in the
tombs of Egyptian pharaohs has been tasted by archaeologists and found
edible.

1. The Population of the world can live within the state boundaries of Texas.

Tips to recover scratched CDs

Tips to recover scratched CDs

Don't you feel like crying every time you add another discto your pile of scratched discs. Trashing that disc which contained yourfavorite songs, pics, files, games or videos is not easy. 

Read-on, if you find yourself wishing for a miracle every time your fav CD isscratched:

Home Remedy :

here's an easy home remedy, which might give you thedesired results. Rub a small amount of toothpaste on the scratch and polish theCD with a soft cloth and any petroleum-based polishing solution (like clearshoe polish). Squirt a drop of Brasso and wipe it with a clean cloth.

Technology tothe rescue

There are many softwares available on the net, which enable the recoveryof the CD data. BadCopy Pro is one such software, which can be used to recoverdestroyed data and files from a range of media.

Just a few clicks is all it requires to recover the discfrom almost all kind of damage situation; be it corrupted, lost data,unreadable or defective.

DiskDoctors is another popular company, which offersboth software and solutions to recover data from a scratched CDs andDVDs.  

General Tips:

* Always wipe the CD from the center outward withstratight spoke-like strokes. Wiping CDs in circles will create more scratches.

* Do not scratch the graphics layer as you cannot repair the disc. HINT: Holdthe disc up to a light with the graphics layer facing the light source. If youcan see light thru the scratches at any point then the disc may be irreparableand or exhibit loading or playing errors. 

* Clean your Disc players lens regularly with a suitable product to ensureoptimal viewing pleasure. 

* Make sure to use a soft, lint-free cloth to clean both sides of the disc.Wipe in a straight line from the centre of the disc to the outer edge. 

* If wiping with a cloth does not remove a fingerprint or smudge, use aspecialized DVD disc polishing spray to clean the disc.

* Only handle the disc by its outer edge and the empty hole in the middle. Thiswill help prevent fingerprints, smudges or scratches.

Statistics:

*Fingermarks/prints cause 43% of disc problems! 
* General wear & tear causes 25% ofdisc problems! 
* Player-related issues cause 15% of discproblems! 
* User-related issues cause 12% of discproblems! 
* PlayStation 2 machine scratches cause 3%of disc problems! 
* Laser rot (a manufacturer error) causes2% of disc problems!

Be Smart..

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Want to know lot about new technologies, health tips and useful information ???

Why are you waiting ??
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  Click here to download . Be Smart 

Why the world needs open street maps ??

Why the world needs open street maps ??

As more private companies offer us maps, we need an open-source, editable solution - a cartographical Wikipedia Every time I tell someone about OpenStreetMap, they inevitably ask "Why not use Google Maps?" From a practical standpoint, it's a reasonable question, but ultimately this is not just a matter of practicality, but of what kind of society we want to live in. I discussed this topic in a 2008 talk on OpenStreetMap I gave at the first MappingDC meeting. Here are many of same concepts, but expanded. In the 1800s, people were struggling with time, not how much of it they had, but what time it was. Clocks existed, but every town had its own time, "local time", which was synchronised by town clocks or, more often than not, church bells. Railway time, then eventually Greenwich mean time, supplanted all local time, and most people today don't think about time as anything but universal. This was accomplished in the US by adoption first of the railroads, and then by universities and large businesses. Geography is big business The modern daytime dilemma is geography, and everyone is looking to be the definitive source. Google spends $1bn annually maintaining their maps, and that does not include the $1.5bn Google spent buying the navigation company Waze. Google is far from the only company trying to own everywhere, as Nokia purchased Navteq and TomTom and Tele Atlas try to merge. All of these companies want to become the definitive source of what's on the ground. That's because what's on the ground has become big business. With GPSes in every car, and a smartphone in every pocket, the market for telling you where you are and where to go has become fierce. With all these companies, why do we need a project like OpenStreetMap? The answer is simply that as a society, no one company should have a monopoly on place, just as no one company had a monopoly on time in the 1800s. Place is a shared resource, and when you give all that power to a single entity, you are giving them the power not only to tell you about your location, but to shape it. In summary, there are three concerns: who decides what gets shown on the map, who decides where you are and where you should go, and personal privacy. Decision time Who decides what gets displayed on a Google Map? The answer is, of course, that Google does. I heard this concern in a meeting with a local government in 2009: they were concerned about using Google Maps on their website because Google makes choices about which businesses to display. The people in the meeting were right to be concerned about this issue, as a government needs to remain impartial; by outsourcing their maps, they would hand the control over to a third party. It seems inevitable that Google will monetise geographic searches, with either premium results, or priority ordering, if it hasn't done so already (is it a coincidence than when I search for "breakfast" near my home, the first result is "SUBWAY® Restaurants"?). Of course Google is not the only map provider; it's just one example. The point is that when you use any map provider, you are handing them the controls - letting them determine what features get emphasised, or what features may not be displayed at all. A road sign warning HGV drivers not to follow Satellite Navigation instructions. Photograph: Christopher ThomondLocation, location The second concern is about location. Who defines where a neighbourhood is, or whether or not you should go? This issue was brought up by the American Civil Liberties Union (ACLU) when a map provider was providing routing (driving/biking/walking instructions) and used what it determined to be "safe" or "dangerous" neighbourhoods as part of its algorithm. This raises the question of who determines what makes a neighbourhood "safe" or not – or whether safe is merely a codeword for something more sinister. Right now, Flickr collects neighbourhood information based on photographs which it exposes through an API. It uses this information to suggest tags for your photograph. But it would be possible to use neighbourhood boundaries in a more subtle way in order to affect anything from traffic patterns to real estate prices, because when a map provider becomes large enough, it becomes the source of "truth". Lastly, these map providers have an incentive to collect information about you in ways that you may not agree with. Both Google and Apple collect your location information when you use their services. They can use this information to improve their map accuracy, but Google has already announced that is going to use this information to track the correlation between searches and where you go. With more than 500 million Android phones in use, this is an enormous amount of information collected on the individual level about people's habits, whether they're taking a casual stroll, commuting to work, going to their doctor, or maybe attending a protest. Certainly we can't ignore the societal implication of so much data in the hands of a single entity, no matter how benevolent it claims to be. Companies like Foursquare use gamification to overlay what is essentially a large scale data collection process, and even Google has gotten into the game of gamification with Ingress, a game which overlays an artificial world onto this one and encourages users to collect routing data and photo mapping as part of effort to either fight off, or encourage, an alien invasion. Finding the solution Now that we have identified the problems, we can examine how OpenStreetMap solves each of them. In terms of map content, OpenStreetMap is both neutral and transparent. OpenStreetMap is a wiki-like map that anyone in the world can edit. If a store is missing from the map, it can be added in by a store owner or even a customer. In terms of display (rendering), each person or company who creates a map is free to render it how they like, but the main map on OpenStreetMap.org uses FLOSS (Free/Libre Open Source Software) rendering software and a liberally licensed stylesheet which anyone can build on. In other words, anyone who cares can always create their own maps based on the same data. Similarly, while the most popular routing programs for OpenStreetMap are FLOSS, even if a company chooses another software stack, a user is always free to use their own routing software; it would be easy to compare routing results based on the same data to find anomalies. And lastly, with OpenStreetMap data a user is free to download some, or all of the map offline. This means that it's possible to use OpenStreetMap data to navigate without giving your location away to anyone at all. OpenStreetMap respects communities and respects people. If you're not already contributing to OSM, consider helping out. If you're already a contributor: thank you.