Magnetic levitation scientific experiment
A Disc Magnet levitates with the help of a ceramic and liquid nitrogen. Pretty cool. It was introduced by Professor Tom H. Johansen in the Superconductors Laboratory at the University of Oslo, Norway.
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How to run Multiple Instances of Yahoo Messenger 8
For those who want to run multiple instances of yahoo messenger 8 at the same time, download and install this registry file here.
if you would like to uninstall for any reason at a later time, download, extract and run this archive here.
I found this very useful if you would like to run unlimited yahoo messenger ids same time on one computer side by side.
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For The Safety Of Your Laptop Batteries
The laptop battery is an indispensable organ of the laptop. The battery is what gives your laptop the convenience of being portable. These batteries can be recharged over and over again.
Laptop batteries should be charged only when they fall below 80% in its capacity. These are usually manufactured for a long lifetime and can be used at least for 500 to 1200 cycles. The use of the laptop batteries can be optimized by handling them carefully and with caution. These batteries should be conditioned on a regular basis. and that should be at least once in a month. While charging the battery, the laptop should be turned off when possible. If kept on, the batteries won’t acquire the required charging power. Also the metal connectors that connect the battery to the laptop should be cleaned. Any dust or moisture in this area can damage the battery.
When you wish to see a movie or listen to music on your laptop, it is better to write the CD or DVD onto your had disc. Doing this will not require as much power as when you just play the CD or DVD on the laptop. In turn, this will help extend the overall life of the battery. A few cautions like these can help the battery to last a long time.
The performance of the battery is determined by its weight, cycle period and rate of discharge. There are three types of batteries available, Some are costly while others in comparison are quite reasonable. These batteries will have a long life if properly stored and used. Hotter temperatures will have an affect on the battery as opposed to keeping the battery at room temperature. However, the terms for storage and usage of the battery vary from one brand to another. The newly manufactured batteries have certain rules for charging them. The new chargers are designed in such a way that they don’t need to be directed regarding the voltage, trickle charge, etc. Therefore, these batteries are said to be “smart batteries” which are smart enough to perform all their tasks own their own.
Theses batteries usually come with the laptop when purchased, and hardly ever need to be replaced because of damage. However, a reputed brand name should always be used to guarantee longer life and better performance. Also, most brand names will come with a warranty.
Laptop batteries can be purchased online also. However you should make sure that the site you are using will offer you quality products and service.
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Victor Epand is an expert consultant for computers, laptops and software. When shopping for used computers, used laptops and used software, we recommend you shop at only the best online stores for used computer batteries, used laptop, used laptop batteries software. |
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The Future Is Quantum
I like the word quantum. It’s a very future sounding word. Fantasy writer Terry Pratchett likes it too, and uses it in his novels to describe anything that can’t really be described or understood. Considering his stories take place on a world that drifts through space balanced on 4 giant elephants standing on a turtle, it’s a word he uses fairly often.
Quantum is like a bridge between what’s possible and what’s probable. It makes science fiction science fact, and it’s here. Well, almost here. The issue of quantum computing has been puzzling researchers for roughly 3 decades, and now it looks like we’re only a few short years away from buying them from our local tech stores.
What’s the big deal with quantum computers anyway? Well, they’re super-fast and super-efficient, making current PCs look like the monstrous machines that took up an entire room when they were first developed. According to Fred Chong, from the University to California, a quantum computer would be able to solve in mere months problems that would take a conventional computer millions of years.
The key to their “superness” is the fact that quantum bits or qubits are not bound by the conventions of time and space as we know them. Normal electrons spin either clockwise or anti-clockwise. Quantum electrons spin in both directions at once. This ability to transcend a single state of existence means that when they’re used in computing, quantum electrons transform conventional “bits” into qubits. Conventional bits can be either a 1 or a 0, but qubits can be both at the same time.
In quantum mechanical terms, the qubits exist in superposition, which leads to an inherent parallelism, which according to physicist David Deutsch allows quantum computers to work on a million computations at once. Current PCs can work on only one.
One of the most important benefits of quantum computers, aside from all the other “superness”, is that they’ll make silicon based microchips obsolete. This is a good thing because within about 4 years silicon chips will have evolved themselves out of existence, being too small to be of any practical use.
One of the ways in which they’ll negate silicon chips, and completely revolutionise the way computers are wired, is through the quantum property of teleportation. Using teleportation, information about one particle will be transmitted to another without using any wires at all. In Star Trek terms, information is beamed from one particle to another. The nice thing about quantum is that there will always be enough power to do this. No flailing about in outer space, panicking about another Klingon attack for these babies. You’re always good to go.
Simple quantum computers are already in existence, but they’re nowhere near achieving what they’re capable of. In 2007, a Canadian company, D-Wave, created a 16-qubit (the goal is at least 30 qubits) quantum computer that could solve sudoku puzzles. Other quantum computers can solve the riddle of Schrodinger’s cat (a cat in a box with poison, is it alive or dead? Until you open the box and have a look, it occupies both states, not unlike quantum electrons and qubits), considered one of the most important equations in quantum mechanics.
It may not seem like much to the man/woman on the street, but it’s enough to get quantum physicists out of their baths and running naked down the street with cries of “Eureka”.
Recommended sites:
http://www.sciencedaily.com/releases/2007/06/070614104042.htm
http://www.sciencedaily.com/releases/2001/09/010913074828.htm
http://www.sciencedaily.com/releases/2006/01/060119230847.htm
http://computer.howstuffworks.com/quantum-computer.htm
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Sandra wrote this article for the online marketers Star Business Internet internet service provider and website hosting one of the leading Internet service companies specialising in business website hosting in the UK |
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Top 30 Social Bookmarking Sites
Here are the top 30 Social Bookmarking Sites rated by a combination of Inbound Links, Google Page Rank, Alexa Rank, and U.S. traffic data.
Although no traffic metrics are completely accurate… I do believe the data below to be useful for gauging relative audience size.
1. digg.com
117,796,083 Inbound Links
16,964,445 Compete Monthly Visitors
8,700,000 Quantcast Monthly Visitors
98 Alexa Ranking
Page Rank: 8
2. Technorati.com
75,306,437 Inbound Links
3,231,709 Compete Monthly Visitors
1,400,000 Quantcast Monthly Visitors
216 Alexa Ranking
Page Rank: 8
3. del.icio.us
171,593,051 Inbound Links
1,699,128 Compete Monthly Visitors
1,300,000 Quantcast Monthly Visitors
248 Alexa Ranking
Page Rank: 8
4. Propeller.com
997,000 Inbound Links
1,454,912 Compete Monthly Visitors
2,180,176 Quantcast Monthly Visitors
2,308 Alexa Ranking
Page Rank: 7
5. StumbleUpon.com
19,050,177 Inbound Links
1,313,586 Compete Monthly Visitors
695,239 Quantcast Monthly Visitors
300 Alexa Ranking
Page Rank: 8
6. reddit.com
45,307,577 Inbound Links
1,226,467 Compete Monthly Visitors
344,383 Quantcast Monthly Visitors
852 Alexa Ranking
Page Rank: 7
7. Fark.com
11,438,723 Inbound Links
306,597 Compete Monthly Visitors
1,767,165 Quantcast Monthly Visitors
1,958 Alexa Ranking
Page Rank: 7
8. MyBlogLog.com
1,742,265 Inbound Links
1,972,847 Compete Monthly Visitors
84,922 Quantcast Monthly Visitors
432 Alexa Ranking
Page Rank: 7
9. Slashdot.org
13,555,035 Inbound Links
724,424 Compete Monthly Visitors
269,884 Quantcast Monthly Visitors
579 Alexa Ranking
Page Rank: 9
10. kaboodle.com
100,266 Inbound Links
1,751,763 Compete Monthly Visitors
851,858 Quantcast Monthly Visitors
9,125 Alexa Ranking
Page Rank: 6
11. Bloglines.com
50,717,948 Inbound Links
382,663 Compete Monthly Visitors
103,711 Quantcast Monthly Visitors
853 Alexa Ranking
Page Rank: 9
12. newsvine.com
24,200,775 Inbound Links
315,857 Compete Monthly Visitors
203,761 Quantcast Monthly Visitors
3,977 Alexa Ranking
Page Rank: 7
13. blinklist.com
23,770,576 Inbound Links
243,277 Compete Monthly Visitors
165,306 Quantcast Monthly Visitors
4,647 Alexa Ranking
Page Rank: 6
14. netvouz.com
8,112,272 Inbound Links
75,507 Compete Monthly Visitors
54,325 Quantcast Monthly Visitors
15,048 Alexa Ranking
Page Rank: 6
15. clipmarks.com
164,419 Inbound Links
196,107 Compete Monthly Visitors
147,131 Quantcast Monthly Visitors
6,740 Alexa Ranking
Page Rank: 6
16. Furl.net
49,595,144 Inbound Links
148,975 Compete Monthly Visitors
57,547 Quantcast Monthly Visitors
4,112 Alexa Ranking
Page Rank: 8
17. MisterWong
13,214,146 Inbound Links
25,416 Compete Monthly Visitors
3,432 Quantcast Monthly Visitors
1,889 Alexa Ranking
Page Rank: 7
18. dzone.com
1,065,009 Inbound Links
100,784 Compete Monthly Visitors
117,897 Quantcast Monthly Visitors
5,187 Alexa Ranking
Page Rank: 6
19. ma.gnolia.com
13,701,444 Inbound Links
110,662 Compete Monthly Visitors
32,363 Quantcast Monthly Visitors
7,454 Alexa Ranking
Page Rank: 7
20. Tailrank.com
5,320,211 Inbound Links
71,563 Compete Monthly Visitors
35,783 Quantcast Monthly Visitors
28,920 Alexa Ranking
Page Rank: 7
21. ShoutWire.com
168,480 Inbound Links
101,738 Compete Monthly Visitors
55,337 Quantcast Monthly Visitors
10,552 Alexa Ranking
Page Rank: 6
22. simpy.com
13,107,730 Inbound Links
62,645 Compete Monthly Visitors
49,205 Quantcast Monthly Visitors
10,948 Alexa Ranking
Page Rank: 7
23. BlogMarks.net
9,748,453 Inbound Links
61,740 Compete Monthly Visitors
28,075 Quantcast Monthly Visitors
11,880 Alexa Ranking
Page Rank: 6
24. BlueDot.us
1,159,780 Inbound Links
107,717 Compete Monthly Visitors
60,045 Quantcast Monthly Visitors
12,072 Alexa Ranking
Page Rank: 6
25. Spurl.net
18,628,253 Inbound Links
42,300 Compete Monthly Visitors
3,483 Quantcast Monthly Visitors
14,300 Alexa Ranking
Page Rank: 6
26. Spotplex.com
541,599 Inbound Links
52,176 Compete Monthly Visitors
15,106 Quantcast Monthly Visitors
42,809 Alexa Ranking
Page Rank: 6
27. linkswarm.com
150,842 Inbound Links
14,504 Compete Monthly Visitors
10,476 Quantcast Monthly Visitors
47,267 Alexa Ranking
Page Rank: 5
28. Spotback.com
97,564 Inbound Links
42,838 Compete Monthly Visitors
5,037 Quantcast Monthly Visitors
42,015 Alexa Ranking
Page Rank: 5
29. PlugIm.com
161,039 Inbound Links
48,078 Compete Monthly Visitors
2,000 Quantcast Monthly Visitors
13,133 Alexa Ranking
Page Rank: 5
30. MyBookmarks.com
25,191 Inbound Links
10,934 Compete Monthly Visitors
7,727 Quantcast Monthly Visitors
108,226 Alexa Ranking
Page Rank: 5
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How to Speed Up FireFox
These few steps will really speed up your browsing experience using Mozilla FireFox browser by over 200%.
1. Into FireFox address bar type “about:config” and hit enter. Scroll down and look for the following entries:
network.http.pipelining
network.http.proxy.pipelining
network.http.pipelining.maxrequests
Normally the browser will make one request to a web page at a time. When you enable pipelining, It will make several requests at once, which dramatically speeds up page loading.
2. Edit those entries as follows:
Set “network.http.pipelining” to “true”
Set “network.http.proxy.pipelining” to “true”
Set “network.http.pipelining.maxrequests” to 30 or less. This means FireFox will make 30 requests to the webpage server at once.
3. Finally right click on an empty area and select New > Integer. Name it “nglayout.initialpaint.delay” and set its value to ‘0′. This value is the amount of time the browser will wait before it acts on the information it recieves.
If you’re using a Broadband/DSL connection you will load pages MUCH faster now!
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Windows XP Registry Cleaners - Top 7 Reasons To Download A Free Scan Now
Windows XP registry cleaners are a great way to keep your PC running at it’s best. If you want to discover the top 7 reasons for using your own Windows XP registry cleaner, then you need to read this article. We will discuss the reasons people use cleaners and how to eradicate the problems that a corrupt registry causes.
The top 7 reasons you should download and scan your PC registry are as follows:
Increase PC performance
Guess what? Your PC doesn’t become slow because of old age. The slowness that gradually creeps up on your PC is more to do with wear and tear on your Windows registry. Over time it becomes so clogged with information that your PC takes longer and longer to locate the information it needs. Cleaning your Windows registry will clear out all the deadwood and suddenly your PC will be running faster than ever.
Lower your blood pressure when your PC starts up
One of the most frustrating parts of a PC, whose registry needs cleaning, is the start up time required. If you have ever sat waiting, red-faced, for your PC to complete it’s startup ritual then you really need to look at giving it a spring clean.
Reduce hard disk load
When your PC loads applications or starts up does your hard disk sound like it is going to blow up? This can be the result of spending un-necessary processing time searching a corrupt registry. Clean it and give your hard disk (and your ears) a break.
Get rid of “blue screens of death”
Whilst less common in Windows XP than they were in Windows NT, these still occur on startup and during program execution, due to corruption issues. If you’re suffering through these blue screens of death, suffer no longer by sorting out your registry.
Eradicate PC hanging/freezing
One of the issues that used to frustrate me so much was application freezing for no apparent reason. Often this would happen whilst browsing the Internet or printing. Once again, with thousands of un-used, clogging registry entries your PC can sometimes be sent into endless loops.
Remove application conflicts
Your registry stores information about all the applications and program libraries (DLL’s) on your PC. When it becomes corrupt or clogged multiple versions of DLL’s begin hanging around which in the long term causes application conflicts and issues.
Save money
Need I say more? Quite simply, having a fast performing PC that doesn’t hit you with freezes or errors all the time is bound to save you money. Take a car for example. If you do not maintain it, eventually it is going to cost thousands to fix or require replacement. The same can be said for PC’s, except when people replace them it is often done un-necessarily.
To diagnose your Windows registry you can download and scan your registry for free using one of the many popular packages.
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To discover the best Windows XP Registry Cleaners, download free registry scans and get your PC operating at it’s best, visit http://www.registryrepairadvisor.com |
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Phishing - What It Is And How To Avoid It
The Internet is large. It is too large in fact - making it incredibly easy for criminals to scam you and your fellow surfers out of your credit card numbers and personal information. All it takes is a computer and a power outlet and a scammer can start taking people’s money. This is one of the primary reasons why phishing has become such a prominent problem in recent years.
Phishing, simply put, is the process by which scammers send out fake emails and set up fake websites where they will ask you for personal and financially sensitive information. You likely receive these all the time. They will come to your Inbox in the form of a letter from your bank or a “privacy” notice from an online account. They will ask you to login from the email or confirm a detail by clicking on a link.
When you click on that link, you do not actually go to your bank’s website though. Instead, you are taken to a front, where the phisher has created a fake website designed to look exactly like your bank. When you log in to the fake website, the phisher records your login information, sends you to the real website and makes away with your bank account details - or any other online account you may have given your login information away for.
This can lead to your entire identity being stolen from you and used with ill intent to get fake loans, credit cards, or other things that will ruin your credit and your reputation and possibly take years to repair.
Avoiding Phishers
There are many things you can do to keep from being phished and having your personal information stolen. The most obvious and first thing you should do is to ignore any emails that arrive from your bank or any other personal institutions. No matter what you see in an email - whether it is logos, numbers, contact details, or HTML - you should ignore it. Businesses know the risks that are associated with online scam artists and will never send you confusing emails asking for your login or to confirm anything.
If you feel it still might be real, call your bank or the company from which it is supposedly from and confirm the information there. Never click on any links in the email either. If you want to check a “message” you supposedly got in your bank’s Inbox, directly log into your bank account by entering the URL manually and checking your Inbox.
Never supply too much personal information on a website. You should never need to give over a social security number or credit card number unless the security precautions are in place to protect them. Look for SSL protection and a padlock on the bottom of your browser to tell you the site is secure. In addition, many browsers are instituting new technology to tell you when a site is not legitimate.
By being vigilant and prepared for the worst, you can avoid most phishing attempts and feel safer while surfing online.
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Jeff Wilson writes extensively about computer related issues like how to protect your personal privacy on the Internet, fixing those annoying Windows errors, and speeding up your PC. To get a free download of Jeff’s favorite Internet Privacy tool go to http://www.pcdatakiller.com |
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Computer Repair - From Settings And Preferences To Viruses And Crashes
With the extent with which we use computers today ‘for both professional and personal use’ it’s safe to say we’ve all encountered the need for computer repair in some form. Whether it’s spy ware or a network crash, computer maintenance is what can save us from slowed computer performance, corrupted files, data loss, and time wasted.
Not surprisingly, the birth of computer repair coincided with the rise of computer use. A complicated piece of technology, a computer is nonetheless used by most of us daily. We sit down at our computers and effortlessly check our emails, stock quotes, and the latest news. We research show times and restaurants. We work our 9 to 5 jobs, using laptops, virtual communication, and hand held devices. Indeed, much in our lives revolves around the computer. It’s no wonder why computer maintenance is so valuable a solution and for the technician, a coveted skill.
Given the many uses for computers, there are as many potential problems, errors, and failures. Thus for computer repair, there are at least as many possible fixes. As a result, knowing what to do to fix your computer can seem like an impossible task. However, if you think about it, most of us have picked up a few tricks along the way that have proven effective. For smaller problems, computer repair is entirely possible by ourselves. For more serious problems though, consulting a professional is the best route.
The main reason why professionals should be consulted is because a person could do more damage to a computer by trying to fix an unknown problem on their own. To avoid such mishaps, it’s best to ask an expert to take a look. Pinpointing the problem is really the biggest part of any computer repair, as it will reveal the exact fix that’s needed to get the system working properly again.
For computer repair technicians, this is the main aspect of their service. Diagnostics do not have to be performed in person necessarily, as most computer manufacturers and Internet service providers have call centers for troubleshooting and offer their advice over the phone, via live chat, or email. Business-wise, most companies have a tech-support staff that can help with most problems, from email to lost files.
Computer repair can be as simple as choosing different settings to full-on data recovery using involved techniques such as zero-knowledge analysis. Given that most computer technicians are specialized, the chances are good that a team can help with all your problems: viruses, spy ware, firewall protection, virtual private networks (VPN), emergency data recovery, RAID recovery, system upgrades, etc.
Computer maintenance pertains to both hardware repair and software repair. At times, installation or uninstallation of software is needed. At others, a small adjustment to preferences will solve the problem. Again, computer repair is wide-ranging. Desktops, mainframes, and supercomputers can all encounter similar problems, but on a different scale. Portable devices will also have related problems, but knowing the system inside a laptop or notebook is a bit different than a PC. This is the reason why most companies have a number of technicians on staff, as one may be more specialized in one area of computer repair than another.
Fixing your computer can be as basic as rebooting your computer, but it can also be as complex as reinstalling the system . Overall, the service of computer repair is relatively new, but the demand for it is growing at a rapid pace. Naturally, the aim is to keep up with all of the new advancements in computer technology which seemingly change by the day.
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My name is Tom Husnik. I live in Minnesota. My web site is at: http://www.bestfixit.com |
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How to Fix a Scratched Disc
If your disc has been scratched, here are the steps you should follow.
Step 1: Clean it. Your first step should be to wash the disc gently under warm water.
Step 2: Try playing the disc. Try to play it in your normal player. If that doesn’t work, try a different drive.
Step 3: Burn a new copy of your disc. Unless your disc now plays perfectly in all drives, you should burn it to a new disc
Step 4: Find the scratch. If nothing’s working so far, inspect the disc and find the scratch.
Step 5: Polish the CD. Apply baking soda toothpaste to a lint-free cloth-an old T-shirt or an eyeglass cloth-and then rub it onto the disc. When rubbing, start at the centre of the disc and rub out to the edge.
Step 6: Wash the disc. If you’re using toothpaste, rinse the disk under warm water and then let it air dry.
Step 7: Try to play the disc. If it works, good. If it doesn’t work, inspect your disc again-there may be another scratch that you didn’t polish the first time.
Step 8: Wax the disc. You can use Vaseline or a neutral-colored shoe polish. Coat the playing surface, then follow the manufacturer’s directions for removing the wax.
Step 9: Play the disc again. If it works this time, copy the disc.
Step 10: Go to a store that sells used. A used CD or DVD store will have a machine that can remove scratches.
You may take great care of your discs, but you will probably have a scratched disc at some point. Follow these steps, and a scratch won’t be a cause for alarm.
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G Pearce works for Magellan Duplication the Hampshire based CD and DVD replication and duplication company serving the needs of artists, record companies and business. For more info on CD replication and duplication services visit http://www.magellanduplication.com/cd-replication.htm |
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