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New Delhi: After Barrel Roll easter egg, Google has now come up with another pleasant surprise. Stop whatever you are doing and and go to the Google homepage. Type in the words "Let it snow" in the search box and Google will surprise you.

As you type, you will find snowflakes falling in your browser. Snowflakes will fall from the top of your screen and slowly cover Google’s search results.

Let it snow for a few seconds and you will find your browser filing up with snow. Once your browser turns into a frozen lake, you can skate around with your mouse. In other words, you can click and move your mouse to manually brush off some of the accumulated snowflakes.



It's a week before Christmas and Google are trying to get us all into the festive spirit.

On Saturday the web giant rolled out its latest joke which had a very seasonal nature.

If you typed in the words 'Let it snow,' snow flakes started gently falling from the top of the screen.

Scroll down for video
It's snowtime: By typing the words 'let it snow' in the search field the gentle flakes start falling

Evenutally the whole screen was covered in snow, the Huffington Post reports.

But before the searcher collapsed in exasperation at another computer problem the cursor would wipe away the snow, before adding 'Bye :)' in the bottom right hand corner.

There was even a 'Defrost' button instead of blue 'Search' button.

When the joke was taken down, it could be still be played by searching for 'let it snow easter egg.'


An easter egg is an intentional hidden message or an in-joke inserted into a computer programme or web page.

Last month it came up with 'do a barrell roll.'

When you typed in those wounds the screen rotated and flipped over like a fighter pilot doing a barrel roll.

Google's search engine home page has attracted its fauir share of attention in recent years.

With a vast array of so-called Google doodles, the company has changed its logo more than 1,000 times.




  



Facebook has rolled out Timeline, its new profile. Here are some tips describing how best to make use of the new features:
(click to zoom)


http://www.faceboo.com/about/timeline
1. Cover photo

The first thing Facebook users should do when they open Timeline is to upload a large cover photo. It is the first thing people see when they get to a user’s page.

2. Activity Log

The ‘Activity Log’ lets Facebook users review all of the stuff they have posted on the site – such as photos or status updates. Only the user can see their ‘Activity Log’ and from this the user can decide what stuff to show and hide on their Timeline.

3. Sharing life stories

Users can fill out the Timeline with special moments from their lives. They need to click on ‘life event’ and then can add their baby photos, first car, graduation, engagement, wedding, new house, baby being born – or anything else.

4. Highlighting special moments and hiding the ones people would rather forget

For extra special moments, Facebook users can highlight them on their timeline by clicking on the star to make them extra big. Or they can remove anything they don't want to appear on their Timeline by clicking the pencil icon and selecting hide or delete.

5. Control privacy post by post

Change the privacy of anything on the Timeline by clicking on the dropdown next to any post. Members can choose the audience they want to see anything - ¬some things they can share publicly while other things they may only want to share with close friends.

6. Add apps to your Timeline

Facebook users can now tell a more complete story of who they are by adding new experiences to the Timeline profile – such as music they are listening to or films they are watching via applications.

 A student poses with the supercheap Aakash tablet computer which she 
  received during its launch in New Delhi on Wednesday, Oct 5, 2011. The 
    $35 basic touch screen tablet aimed at students can be used for functions 
like word processing, web browsing and video conferencing.
NEW DELHI: Datawind, the maker of the world's cheapest tablet has put up for sale about 30,000 tablets online at a price of Rs 2500 each, with a delivery period of seven days.

The seven inch tablet with Android 2.2 is now available through its portal aakashtablet.com. "We have put up on sale about 30,000 tablets online, which will have a cash on delivery of 7 days. We have achieved pre-sale orders of about 400,000 tablets from individuals and corporates. But current supplies will only be limited for individual buyers," Datawind CEO and founder Suneet Singh Tuli told ET.

Aakash's next commercial version called the Ubislate 7, which has a faster processor, is slated to be launched late January. Ubislate 7 is set to have a 700 Mhz processor compared to the 366 MHz processor in Aakash. Ubislate 7 will be priced at Rs 3000 for sale online.

Datawind though seems to be struggling with customer service issues for online retail, even though the sale is only for a limited number of tablets.

According to sources, the Indian government is also planning to provide a new specification for Aakash, which may come with a faster processor and better battery life. The current version of Aakash has a battery life of about 1.5 hours. An email to the Ministry of Human Resource and Development, which is supplying the tablets to schools and colleges remained unanswered.

The government till now procured only 10,000 tablets. It has still not procured the remaining 90,000 tablets for distribution in schools and colleges, even as other nations have expressed interest to the government for similar low cost computing initiatives.
After making some changes on its home page UI, Youtube now plans to foray into education. To help the cause of spreading education, Youtube plans to unveil a new tool for teachers as well as students.�

Youtube for schools is a new idea to introduce collaborative education as head of Youtube Angela Lin says,” This is a technical solution to allow schools that normally restrict access to YouTube to gain access to it.”

Youtube's official blog post also �suggested that teachers have been looking up to leveraging the Youtube platform to access a huge database of knowledge in form of educational videos. But the bone in the throat was those other videos related to entertainment would distract students. This was the main reason behind schools restricting Youtube videos. However, the educational value of Youtube videos in visually interactive learning was much wider in horizon. Thus, Youtube introduced a new platform for learning.

Youtube for schools will have a network setting that will allow students only to access videos for knowledge via Youtube EDU. There are also options to stop comments and related video results and students can see and learn with the help of 3G and 4G network connections.

Youtube has been constantly working behind content curation with TED and also organizations such as the Smithsonian. Now there is a whole new range of playlists which are categorized by grade level and subjects. Teachers can also make comments or suggestions and the best part is this is free to use.

Facebook said it has rid its site of most of the pornographic and violent images posted as part of a spam attack.
Security experts say the attack could 
be directed against other websites


The social network blamed a browser vulnerability and said it was improving its systems to defend itself against similar attacks in the future.

Thousands of the website's 800 million users have complained about the pictures over recent days.

A source told the BBC that Facebook knew who was responsible - and it was not an Anonymous hacktivist.

The firm is understood to be working with its legal department to take action against the suspected attacker.
Browser exploit

Facebook said the spam attack worked via a "self-XSS vulnerability in the browser".

It added: "During this attack, users were tricked into pasting and executing malicious javascript in their browser URL bar causing them to unknowingly share this offensive content.

"No user data or accounts were compromised during this attack."

The firm said its engineers had built enforcement mechanisms to shut down malicious pages and accounts that attempt to exploit the vulnerability.

It also offered the following advice to help guard against further attacks:


  • Never copy and paste unknown code into the address bar
  • Always use an up-to-date browser
  •  Use the report links on Facebook to flag suspicious behaviour or content on friends' accounts
Strange:

Facebook allows children above the age of 13 to be members, and polices a ban against inappropriate images.

However, security experts said it was difficult for the firm to respond to this threat, bearing in mind it exploited a vulnerability in an unnamed web browser rather than the site itself.

They also said that the attack was very unusual because most other scams on the social network are designed to deliver a financial payout.

"This seems to be a purely malicious act. Facebook has a reputation for maintaining a reasonably family-friendly environment," wrote Chester Wisniewski, a senior security advisor at Sophos, on his company's blog.

"Hopefully whichever browser it is that has the flaw will provide a fix ASAP, but as we know most people are slow to apply updates regardless of which browser they use (except Chrome)."

"The flaw being exploited could likely be used against other sites as well if users can be tricked into pasting malicious javascript into the browser."

                                             Steve Jobs leans against his wife, Laurene Powell Jobs 
                                             (Lea Suzuki/San Francisco Chronicle/Corbis)


For all of his years in the spotlight at the helm of Apple, Steve Jobs in many ways remains an inscrutable figure — even in his death. Fiercely private, Jobs concealed most specifics about his personal life, from his curious family life to the details of his battle with pancreatic cancer — a disease that ultimately claimed him on Wednesday, at the age of 56.
While the CEO and co-founder of Apple steered most interviews away from the public fascination with his private life, there's plenty we know about Jobs the person, beyond the Mac and the iPhone. If anything, the obscure details of his interior life paint a subtler, more nuanced portrait of how one of the finest technology minds of our time grew into the dynamo that we remember him as today.
1. Early life and childhood
Jobs was born in San Francisco on February 24, 1955. He was adopted shortly after his birth and reared near Mountain View, California by a couple named Clara and Paul Jobs. His adoptive father — a term that Jobs openly objected to — was a machinist for a laser company and his mother worked as an accountant.
Later in life, Jobs discovered the identities of his estranged parents. His birth mother, Joanne Simpson, was a graduate student at the time and later a speech pathologist; his biological father, Abdulfattah John Jandali, was a Syrian Muslim who left the country at age 18 and reportedly now serves as the vice president of a Reno, Nevada casino. While Jobs reconnected with Simpson in later years, he and his biological father remained estranged.
2. College dropout
The lead mind behind the most successful company on the planet never graduated from college, in fact, he didn't even get close. After graduating from high school in Cupertino, California — a town now synonymous with 1 Infinite Loop, Apple's headquarters — Jobs enrolled in Reed College in 1972. Jobs stayed at Reed (a liberal arts university in Portland, Oregon) for only one semester, dropping out quickly due to      the financial burden the private school's steep tuition placed on his parents.
In his famous 2005 commencement speech to Stanford University, Jobs said of his time at Reed: "It wasn't all romantic. I didn't have a dorm room, so I slept on the floor in friends' rooms, I returned coke bottles for the 5 cent deposits to buy food with, and I would walk the seven miles across town every Sunday night to get one good meal a week at the Hare Krishna temple."
3. Fibbed to his Apple co-founder about a job at Atari
Jobs is well known for his innovations in personal computing, mobile tech, and software, but he also helped create one of the best known video games of all-time. In 1975, Jobs was tapped by Atarito work on the Pong-like game Breakout.
He was reportedly offered $750 for his development work, with the possibility of an extra $100 for each chip eliminated from the game's final design. Jobs recruited Steve Wozniak (later one of Apple's other founders) to help him with the challenge. Wozniak managed to whittle the prototype's design down so much that Atari paid out a $5,000 bonus — but Jobs kept the bonus for himself, and paid his unsuspecting friend only $375, according to Wozniak's own autobiography.
4. The wife he leaves behind
Like the rest of his family life, Jobs kept his marriage out of the public eye. Thinking back on his legacy conjures images of him commanding the stage in his trademark black turtleneck and jeans, and those solo moments are his most iconic. But at home in Palo Alto, Jobs was raising a family with his wife, Laurene, an entrepreneur who attended the University of Pennsylvania's prestigious Wharton business school and later received her MBA at Stanford, where she first met her future husband.
For all of his single-minded dedication to the company he built from the ground up, Jobs actuallyskipped a meeting to take Laurene on their first date: "I was in the parking lot with the key in the car, and I thought to myself, 'If this is my last night on earth, would I rather spend it at a business meeting or with this woman?' I ran across the parking lot, asked her if she'd have dinner with me. She said yes, we walked into town and we've been together ever since."
In 1991, Jobs and Powell were married in the Ahwahnee Hotel at Yosemite National Park, and the marriage was officiated by Kobin Chino, a Zen Buddhist monk.
5. His sister is a famous author
Later in his life, Jobs crossed paths with his biological sister while seeking the identity of his birth parents. His sister, Mona Simpson (born Mona Jandali), is the well-known author of Anywhere But Here — a story about a mother and daughter that was later adapted into a film starring Natalie Portman and Susan Sarandon.
After reuniting, Jobs and Simpson developed a close relationship. Of his sister, he told a New York Times interviewer: "We're family. She's one of my best friends in the world. I call her and talk to her every couple of days.'' Anywhere But Here is dedicated to "my brother Steve."
6. Celebrity romances
In The Second Coming of Steve Jobs, an unauthorized biography, a friend from Reed reveals that Jobs had a brief fling with folk singer Joan Baez. Baez confirmed the the two were close "briefly," though her romantic connection with Bob Dylan is much better known (Dylan was the Apple icon's favorite musician). The biography also notes that Jobs went out with actress Diane Keaton briefly.                                                                  
7. His first daughter
When he was 23, Jobs and his high school girlfriend Chris Ann Brennan conceived a daughter, Lisa Brennan Jobs. She was born in 1978, just as Apple began picking up steam in the tech world. He and Brennan never married, and Jobs reportedly denied paternity for some time, going as far as stating that he was sterile in court documents. He went on to father three more children with Laurene Powell. After later mending their relationship, Jobs paid for his first daughter's education at Harvard. She graduated in 2000 and now works as a magazine writer.
8. Alternative lifestyle
In a few interviews, Jobs hinted at his early experience with the psychedelic drug LSD. Of Microsoft founder Bill Gates, Jobs said: "I wish him the best, I really do. I just think he and Microsoft are a bit narrow. He'd be a broader guy if he had dropped acid once or gone off to an ashram when he was younger."
The connection has enough weight that Albert Hofmann, the Swiss scientist who first synthesized (and took) LSD, appealed to Jobs for funding for research about the drug's therapeutic use.
In a book interview, Jobs called his experience with the drug "one of the two or three most important things I have done in my life." As Jobs himself has suggested, LSD may have contributed to the "think different" approach that still puts Apple's designs a head above the competition.
Jobs will forever be a visionary, and his personal life also reflects the forward-thinking, alternative approach that vaulted Apple to success. During a trip to India, Jobs visited a well-known ashram and returned to the U.S. as a Zen Buddhist.
Jobs was also a pescetarian who didn't consume most animal products, and didn't eat meat other than fish. A strong believer in Eastern medicine, he sought to treat his own cancer through alternative approaches and specialized diets before reluctantly seeking his first surgery for a cancerous tumor in 2004.
9. His fortune
As the CEO of the world's most valuable brand, Jobs pulled in a comically low annual salary of just $1. While the gesture isn't unheard of in the corporate world  — Google's Larry Page, Sergey Brin, and Eric Schmidt all pocketed the same 100 penny salary annually — Jobs has kept his salary at $1 since 1997, the year he became Apple's lead executive. Of his salary, Jobs joked in 2007: "I get 50 cents a year for showing up, and the other 50 cents is based on my performance."
In early 2011, Jobs owned 5.5 million shares of Apple. After his death, Apple shares were valued at $377.64 — a roughly 43-fold growth in valuation over the last 10 years that shows no signs of slowing down.
He may only have taken in a single dollar per year, but Jobs leaves behind a vast fortune. The largest chunk of that wealth is the roughly $7 billion from the sale of Pixar to Disney in 2006. In 2011, with an estimated net worth of $8.3 billion, he was the 110th richest person in the world, according toForbes. If Jobs hadn't sold his shares upon leaving Apple in 1985 (before returning to the company in 1996), he would be the world's fifth richest individual.
While there's no word yet on plans for his estate, Jobs leaves behind three children from his marriage to Laurene Jobs (Reed, Erin, and Eve), as well as his first daughter, Lisa Brennan-Jobs.





Ladies vs Ricky Bahl is an upcoming Bollywood romantic comedy film directed by Maneesh Sharma and produced by Aditya Chopra under the banner of Yash Raj Films. It will star Ranveer Singh and Anushka Sharma in lead roles and marks the debut of Priyanka Chopra's cousin, Parineeti Chopra. The pair will be seen together, once again, after their last hit together Band Baaja Baraat. The film is set to release on December 23, 2011.
The film is a romantic comedy where the suave and charming Ricky Bahl (Ranveer Singh), cons girls for a living but finally manages to meet his match, which will be played by Anushka Sharma.


This video will show you how to shutdown your computer from anywhere using a texting capable cell phone, Microsoft Outlook and a free account from www.kwiry.com



 An Ethical Hacker is one name given to a Penetration Tester. An ethical hacker is usually employed by an organization who trusts him or her to attempt to penetrate networks and/or computer systems, using the same methods as a hacker, for the purpose of finding and fixing computer security vulnerabilities. Unauthorized hacking (i.e., gaining access to computer systems without prior authorization from the owner) is a crime in most countries, but penetration testing done by request of the owner of the targeted system(s) or network(s) is not.
A Certified Ethical Hacker has obtained a certification in how to look for the weaknesses and vulnerabilities in target systems and uses the same knowledge and tools as a hacker.

A defunct German research satellite plummeted to earth at speeds of up to 280mph last night and crashed somewhere in Southeast Asia, a scientist said, but its exact whereabouts remain a mystery.

Jonathan McDowell of the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts, said two Chinese cities with millions of inhabitants each, Chongqing and Chengdu, had been in the minivan-sized satellite's projected path during its re-entry time.

'But if it had come down over a populated area there probably would be reports by now,' the astrophysicist, who tracks man-made space objects, said in a telephone interview.

Most parts of the satellite were expected to burn up as they hit the atmosphere, but up to 30 fragments weighing a total of 1.87 tonnes may have survived the re-entry, the German Aerospace Centre said.

Calculations based on U.S. military data indicate that debris of the ROSAT scientific research satellite must have crashed somewhere east of Sri Lanka over the Indian Ocean, or over the Andaman Sea off the coast of Myanmar, or further inland in Myanmar or as far inland as China, he said.

The satellite entered the atmosphere between 9:45pm to 10:15pm Saturday EDT and would have taken 15 minutes or less to hit the ground, the centre said.

Hours before the re-entry, the center said the satellite was not expected to land in Europe, Africa or Australia.

There were no immediate reports from Asian governments or space agencies about the fallen satellite, but an exact determination could take days.
Berlin: Scientists were trying to establish how and where a defunct German research satellite returned to the Earth on Sunday, after warning that some parts might survive re-entry and crash at up to 280 mph (450 kph).

There was no immediate solid evidence to determine above which continent or country the ROSAT scientific research satellite entered the atmosphere, said Andreas Schuetz, spokesman for the German Aerospace Centre.

Most parts of the minivan-sized satellite were expected to burn up, but up to 30 fragments weighing a total of 1.87 tons (1.7 metric tons) could crash.

Scientists were no longer able to communicate with the dead satellite and it must have traveled about 12,500 miles (20,000 kilometers) in the final 30 minutes before entering the atmosphere, Schuetz said.

Experts were waiting for "observations from around the world," he added.

Scientists said hours before the re-entry into the atmosphere that the satellite was not expected to hit over Europe, Africa or Australia. According to a precalculated path it could have been above Asia, possibly China, at the time of its re-entry, but Schuetz said he could not confirm that.

The 2.69-ton (2.4 metric ton) scientific ROSAT satellite was launched in 1990 and retired in 1999 after being used for research on black holes and neutron stars and performing the first all-sky survey of X-ray sources with an imaging telescope.

The largest single fragment of ROSAT that could hit into the earth is the telescope's heat-resistant mirror.

During its mission, the satellite orbited about 370 miles (600 kilometers) above the Earth's surface, but since its decommissioning it has lost altitude, circling at a distance of only 205 miles (330 kilometres) above ground in June for example, the agency said.

Even in the last days, the satellite still circled the planet every 90 minutes, making it hard to predict where on Earth it would eventually come down.

A dead NASA satellite fell into the southern Pacific Ocean last month, causing no damage, despite fears it would hit a populated area and cause damage or kill people.
Experts believe about two dozen metal pieces from the bus-sized satellite fell over a 500-mile (800-kilometre) span.

The German space agency puts the odds of somebody somewhere on Earth being hurt by its satellite at one in 2,000 - a slightly higher level of risk than was calculated for the NASA satellite. But any one individual's odds of being struck are one in 14 trillion, given there are 7 billion people on the planet.
The pic, which I found on i.imgur.com, says: Indians have the largest amount of black money in Swiss Banks. Rudolf Elmer provides the list of famous Indians to Wikileaks. He also revealed that black money was started depositing in Swiss Banks in early 70s by some of the names of India through illegal mining, stock market, drug dealing, fake projects etc.

According to the pic: Though Wikileaks has finally released few names, but it has threatened that if Indian government doesn’t start taking action, they would reveal all the names of big and powerfulpoliticians. See this pic carefully:





Please Note: I’m still unsure of these details since Wikileaks hasn’t published these details on their site.

As most of the Congress and UPA leaders only have been listed here so I doubt its authenticity and consider it as fake. It’s up to you, how you take it ! I shouldn’t be made responsible under any circumstances. I found this on Imgur so I pasted it.

Here is the original source of pic: http://i.imgur.com/bO3dF.png 


                                                                                 

It's déjà vu all over again, as Yogi Berra might have put it. This month, another defunct satellite is expected to plunge to Earth — offering us another welcome respite from worrying about our real problems.

Instead, we can worry about the fantastically slim odds of being killed by some of the debris that will be shed by Germany's ROentgen SATellite (ROSAT) X-Ray telescope on its fiery uncontrolled re-entry to Earth just before Halloween.

"It will not be possible to make any kind of reliable forecast about where the satellite will actually come down until about one or two hours before the fact," says the European Space Agency's Heiner Klinkrad, in a statement on the re-entry. "In the final phase, ROSAT will be 'caught' by the atmosphere at which point it will not even complete an orbit around the Earth: Instead, it will go into 'free fall'."
During its mission, the ROentgen SATellite (ROSAT) performed its observations in an elliptical orbit at distances of between 585 and 565 kilometres above the surface of the Earth. Since its decommissioning, atmospheric drag has caused the satellite to lose altitude. In June 2011, it was at a distance of only about 327 kilometres above the ground. Due to the fact that ROSAT does not have a propulsion system on board, it was not possible to manoeuvre the satellite to perform a controlled re-entry at the end of its mission in 1999. When the spacecraft re-enters the atmosphere at a speed of approximately 28,000 kilometres per hour, the X-ray observatory will break up into fragments, some of which will burn up by the extreme heat. The latest studies reveal that it is possible that up to 30 individual pieces weighing a total of 1.7 tons may reach the surface of the Earth. The largest single fragment will probably be the telescope's mirror, which is very heat resistant and may weigh up to 1.7 tons.


The time and location of re-entry cannot be predicted precisely. At present, scientists expect the X-ray satellite, which completes an orbit around Earth in about 90 minutes, to re-enter around between 21 and 24 October 2011. Currently, the re-entry date can only be calculated to within plus/minus two days. This time slot of uncertainty will be reduced as the date of re-entry approaches. However, even one day before re-entry, the estimate will only be accurate to within plus/minus five hours .All areas under the orbit of ROSAT, which extends to 53 degrees northern and southern latitude could be affected by its re-entry. The bulk of the debris will impact near the ground track of the satellite. However, isolated fragments could fall to Earth in a 80 kilometre wide path along the track.
Germany's defunct ROSAT satellite will fall back to Earth some time this week, but German space officials say the fall site is still a mystery. Re-entry is expected between Friday and Oct. 24.

"The time and location of re-entry cannot be predicted precisely," the German Aerospace Center (DLR) stated. It also noted that re-entry can be calculated only to within two days but certainty will grow as the date draws closer.

The scientists say that even a day before re-entry the estimate will only be accurate to within five hours.

Sample representation based on three consecutive orbits of ROSAT



You have already seen various versions of "chammak challo" but now its time to see how that song actually came into existence. Watch the full video of "Ra One Chammak Challo song" featuring music duo vishal shekhar & international artist Akon.
Tricks: ROSAT: A German-American-British X-ray and ultraviolet astronomy satellite, named for Wilhelm Röntgen (1845–1923) who discovered X-rays; it operate...
In late October or early November a Germany astronomy satellite – called ROSAT- will plunge uncontrolled back to Earth.
Earth has been told to brace for a possible satellite collision as an orbiting telescope weighing nearly three tons has spun out of control and is plummeting homewards.

ROSAT, a German X-ray telescope built with British and American technology, has been orbiting the Earth since 1990 and has provided invaluable data on stars. But they lost contact with it in 1999.

It is now predicted to re-enter Earth's atmosphere at the end of this month.
Earth has been told to brace for a possible satellite collision as an orbiting telescope weighing nearly three tons has spun out of control and is plummeting homewards.

ROSAT, a German X-ray telescope built with British and American technology, has been orbiting the Earth since 1990 and has provided invaluable data on stars. But they lost contact with it in 1999.

It is now predicted to re-enter Earth's atmosphere at the end of this month.
Last month the German space agency estimated that ROSAT has a 1-in-2000 chance of hitting someone - higher than the 1-in-3,200 odds Nasa gave for UARS, the last satellite to fall to Earth..
A German-American-British X-ray and ultraviolet astronomy satellite, named for Wilhelm Röntgen (1845–1923) who discovered X-rays; it operated for almost nine years. The first six months of the mission were dedicated to an all-sky survey in X-rays (0.1–2.5 keV) and ultraviolet (62–206 eV) using an imaging telescope with a sensitivity about 1,000 times greater than that achievable with the instruments on Uhuru. During the subsequent pointed phase of its mission, ROSAT made deep observations of a wide variety of objects. Its operation ended in Feb. 12, 1999.

The Roentgensatellit (ROSAT) was a joint German, US and British X-ray astrophysics project. ROSAT carried a German-built imaging X-ray Telescope (XRT) with three focal plane instruments: two German Position Sensitive Proportional Counters (PSPC) and the US-supplied High Resolution Imager (HRI). The X-ray mirror assembly was a grazing incidence four-fold nested Wolter I telescope with an 84-cm diameter aperture and 240-cm focal length. The angular resolution was <5 arcsec at half energy width. The XRT assembly was sensitive to X-rays between 0.1 to 2 keV.
In addition, a British-supplied extreme ultraviolet (XUV) telescope, the Wide Field Camera (WFC), was coaligned with the XRT and covers the wave band between and 6 angstroms (0.042 to 0.21 keV).
ROSAT's unique strengths were high spatial resolution, low-background, soft X-ray imaging for the study of the structure of low surface brightness features, and for low-resolution spectroscopy.
The ROSAT spacecraft was a three-axis stablized satellite which can be used for pointed observations, for slewing between targets, and for performing scanning observations on great circles perpendicular to the plane of the ecliptic. ROSAT was capable of fast slews (180 deg. in ~15 min.) which makes it possible to observe two targets on opposite hemispheres during each orbit. The pointing accuracy was 1 arcminute with stability <5 arcsec per sec and jitter radius of ~10 arcsec. Two CCD star sensors were used for optical position sensing of guide stars and attitude determination of the spacecraft. The post facto attitude determination accuracy was 6 arcsec.
The ROSAT mission was divided into two phases: 


(1) After a two-month on-orbit calibration and verification period, an all-sky survey was performed for six            months using the PSPC in the focus of XRT, and in two XUV bands using the WFC. The survey was            carried out in the scan mode. 

(2) The second phase consists of the remainder of the mission and was devoted to pointed observations of            selected astrophysical sources. In ROSAT's pointed phase, observing time was allocated to Guest                  Investigators from all three participating countries through peer review of submitted proposals. ROSAT         had a design life of 18 months, but was expected to operate beyond its nominal lifetime. 

Re-entry into the Earth's atmosphere

In 1990, the satellite was put in an orbit at an altitude of 580 km and inclination of 53° . Since that time, due to atmospheric drag, the satellite has slowly lost height. As of September 2011, the satellite continues to orbit approximately 270 km above the Earth, and is expected to re-enter the Earth's atmosphere in October 2011. 






NIFTY

It is the Sensex's counterpart on the National Stock Exchnage, NSE.

The only difference between the two indices (the Sensex and Nifty) is that the Nifty comprises of 50 companies and hence is more broad-based than the Sensex.

Having said that one must remember that the Sensex is the benchmark that represents Indian equity markets globally.

The Nifty 50 or the S&P CNX Nifty as the index is officially called has all the 30 Sensex stocks.


The NSE Nifty functions exactly like (explained above) the BSE Sensex.
Sensex


It is an index that represents the direction of the companies that are traded on the Bombay Stock Exchange BSE. The word Sensex comes from sensitive index. 
The Sensex captures the increase or decrease in prices of stocks of companies that it comprises. A number represents this movement. Currently, all the 30 stocks that make up the Sensex have reached a value of 14,355 points.
These companies represent the myriad sectors of the Indian economy. A few of these companies and the sector they represent are: ACC (cement), Bajaj Auto, Tata Motors, Maruti  (automobile), Infosys , Wipro , TCS  (information technology), ONGC , Reliance (oil & gas), ITC, HLL  (fast moving consumer goods) etc.


Each company has a weight assigned to it. Companies like Reliance, Infosys, and HLL have higher weightages compared to others like HDFC , Wipro, or a BHEL. 


The increase or decrease in this index, the Sensex, is the effect of a corresponding increase or decrease in the stock market price of these 30 companies.


 



New Delhi, Oct 5 (ANI): Union Communications and Information Technology Minister Kapil Sibal launched 'Akash' a $35(The expected price tag is 1,750 rupees.) tablet here on Wednesday.

The government is buying the first units of the lightweight touch-screen device, called Aakash, or "sky" in Hindi, for $50 each from a British company which is assembling the web-enabled devices in India.

A pilot run of 100,000 units will be given to students for free, with the first 500 handed out at the launch to a mixed response. It supports video conferencing, has two USB ports and a three-hour battery life but some users said it was slow.

Two years in development, the paperback book-sized Aakash may help the government's goal of incorporating information technology in education, although critics were doubtful of its mass appeal.
Google Inc. is an American multinational public corporation invested in Internet search, cloud computing, and advertising technologies. Google hosts and develops a number of Internet-based services and products, and generates profit primarily from advertising through its AdWords program. The company was founded by Larry Page and Sergey Brin, often dubbed the "Google Guys" while the two were attending Stanford University as PhD candidates. 
  
YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, share and view videos.

Unregistered users may watch videos, and registered users may upload an unlimited number of videos. Videos that are considered to contain potentially offensive content are available only to registered users 18 years old and older. In November 2006, YouTube, LLC was bought by Google Inc. for US$1.65 billion, and now operates as a subsidiary of Google.

The domain name www.youtube.com was activated on February 14, 2005, and the website was developed over the subsequent months.

The first YouTube video was entitled Me at the zoo, and shows founder Karim at the San Diego Zoo. The video was uploaded on April 23, 2005, and can still be viewed on the site.








 

The Microsoft Windows 7 operating system has been designed for delivering better speeds than its predecessors. However, as time passes by, the laptop/PC might tend to get slower. This is not exactly the fault of the OS. As the matter of fact, it is a common problem faced by many operating systems.



Visual and Sound Related 
1. Using minimal Visual Effects
 Disabling certain (or all) visual effects can definitely enhance performance. To disable visual effects, do the following:

  1. 1.       Press Windows key and while holding it down, press Pause/Break key.
    2.       In the window that appears, click on Advanced system settings in the left side pane.
    3.       In the Advanced tab, under Performance Section, click on Settings
    4.       In the Performance Options window (refer figure) that appears, under Visual Effects tab, disable the options that you do not need. Or simply selecting ‘Adjust for best performance‘ will disable all options.
    5.       After disabling the option, click Apply and then OK.
    Doing the above might make the screen less attractive. But, the performance will surely get a boost. 
     

2. Using minimal Sound Effects
For disabling sound effects, do the following:
1.       Click Start. In the search box type mmsys.cpl and press Enter
2.       In the Sound window (refer figure) that appears click on Sounds tab
3.       Set the Sounds scheme to ‘No Sounds
4.       You could set only the essential sounds if needed in the Program Events, by selecting the specific event and then choosing the sound from the Sounds drop-down menu below.
5.       You can as well disable the "Play Windows Startup sound" option.
6.       After the settings are done, click Apply and OK.


Software and Services related

1. Run a trusted Anti-Virus program
Ensure that you have a good anti-virus software loaded on your laptop/computer. This will ensure that no malware or spyware gets planted in your system. Without such protection software, there are chances of third party malware and virus being installed or stored on your system, causing harmful effects and also eating up precious space.

2. Install only essential software
Ensure that you install only that software which you need. If you install any trial software and find out that you don’t really need it, uninstall and delete it immediately. Else, they might hog precious disk space, RAM and processor cycles. If you’ve installed a software, which you are unable to get rid of, and which is hampering the normal functioning of your laptop, then you might have to format your hard drive. Be aware that formatting your hard drive might wipe out all your data. Therefore it is best you take a back-up before going ahead with formatting.

3. Disable or make unneeded services Manual
 Some processes and services, which might not really be necessary, are by default made to start automatically once the system starts up. They will consume RAM as well as the processor’s attention, slowing down other important tasks. It is best to disable them. For this, do the following:
1.      

1.         Click Start. In the search box type services.msc and press Enter
2.       Go to Services & Applications > Services. You’ll see the Services window (refer figure).
3.       Right-click on a service that you wish to set to manual or disable. If the service is already started, Stop it first.
4.       Once the service is stopped, again right-click on it and select Properties.
5.       In the Startup type, you can either set the service to Manual, if you would be using it later, or Disable it, if not needed.
6.       Once done, you can close the window.

 
4. Disabling Unwanted Start-up programs to speed up System Start-up
 
Some programs are set to start during system start-up. These might slow down the start-up process. Programs that are not really needed during start-up can be disabled. For this, do the following:
1.      
1. Click Start. In the search box type msconfig and press Enter.
2. In the System Configuration window (refer figure), go to Startup.
3. Uncheck the box next to those processes that are not important for start-up. This will disable them
4. Once you’ve disabled the processes, click Apply and OK.


Hard Drive related

1. Clean up the hard drive

1.     
1.       Click Start > All Programs > Accessories > System Tools > Disk Cleanup
2.       The system will first calculate how much space can be freed up this way. In the Disk Cleanup window (refer figure) that appears, select the files in that need to be deleted under the Files to delete list.
3.       For deleting ‘System Restore‘ and ‘Shadow copy‘ files, click "Clean up system files" and then on "More Options" tab
4.       Finally click OK. You’ll be prompted again before the deletion. Click Yes.

 2. Enable Write caching on device
 This is an option which allows the OS to flush changed data to the hard disk when the system is idle, so that performance is not affected when in use. For enabling this, do the following:


1.    
1.      
1.    Press Windows key and while holding it down, press Pause/Break key.
2.    In the window that appears, click on Device Manager in the left hand pane.
3.    In the next window that appears, expand Disk drives.
4.    The drop-down list will show the hard drive. Right-click on it and select Properties.
5.    Click the Policies tab in the Device Properties window (refer figure).
6.    Check the box next to "Enable write caching on the device"
7.    You can as well check the box next to "Turn off Windows write-cache buffer flushing on the device" and then click OK.

        Note: However, there is one disadvantage in enabling these options – if there is a power outage or a system crash, data might be lost or corrupted. If you have a secondary power supply, like a UPS, you could go ahead with checking these options.

     
      3.  Perform Disk Defragmentation

 When there is no sufficient space to store in a hard drive, the OS splits the file into parts and stores it in different areas on the hard drive. Defragmenting allows all these parts to be stored in contiguous memory locations. For defragmenting disk do the following:

                1.       Click Start > All Programs > Accessories > System Tools > Disk Defragmenter
2.       In the window (refer figure) that appears, click on the drive that you want to defragment and then click Analyze disk.
3.       This will estimate the time required for the process. When done click on Defragment disk.
4.       Once done you can either View Report or click Close.




 

These pretty much sum up the small things that you can do, to make a big difference to your Windows 7′s performance. If you have some personal tips you’ve done yourself to improve the performances, we’d like to hear from you. 




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