How Much Are You Worth To Facebook ? I’m Valued at $377, Find out Yours !

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When Facebook went for IPO, initially it was opened at 42$ valued at $116 billion. Now currently Facebook stocks at $30.014 (at the time of writing this post). This couldn’t be possible without 800 million people. If you’re one among them, do you want to find out value of your facebook profile ?              more...

How Start Menu Evolved in Windows

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In a recent blog post on building Windows 8, a new post has been found in which the emphasis has been given on the how and why of reimagining Start. In the first post the readers can read about the history and evolution of the Start menu, and several of the problems, and trends that have been gathered from your feed backs. Perhaps, it is always important to understand where we've come from before we talk about where we’re headed.                       more...

How an Inkjet Printer Works

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Inkjet printers contain hundreds of parts all working together to put millions of microscopic dots onto paper. There are five main components of an inkjet printer: print head, paper feeder, circuit board, power supply, and the case. Of these, the print head and paper feeder are the most interesting.

The Print Head

The print head contains an array of microscopic nozzles that fire drops of ink onto the paper. In some cheap printers, the print head is not even part of the printer, but part of the ink cartridge. There are two main types of print head: thermal ("Bubblejet") and piezoelectric.  more...

How Do RSS Feeds Work?

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RSS feeds are like beacons, displaying updates from your favorite websites via your preferred RSS feed reader and thereby saving you the effort of visiting the website!

RSS: A Beacon for Your Website

RSS feeds provide a means of communicating updates to your website content with users, without them having to open your site in their browser.
This is done by means of a feed reader (such as Google Reader), typically an email client or web service, but it can also be a dedicated aggregator app on your computer or mobile device.
The feed acts as a sort of beacon for your website – whenever your site is updated, the RSS feed will update to reflect this change.  more...

How 3D Works

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It seems like 3D is everywhere. Movies, living rooms. Even real life is 3D! But how does it all work?
Most 3D operates on a single basic principle—tricking our dumb, binocular brain into interpreting a 2D image into one with depth. The most basic way to do this is stereoscopy, which is essentially showing a slightly different image to each eye, which the brain mashes together into a 3D image. more...

How Earthquake and Tsunami Warning Systems Work

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Earthquake and tsunami warning systems both monitor the same thing: seismic waves. Seismic data takes the Earth's pulse directly, so when the earth shakes, we get immediate feedback. If all goes well, we have enough time to run.
Lots of organizations watch for earth movement. The U.S.'s Advanced National Seismic System (ANSS), for instance, runs 95 stations across North America. When there's an earthquake, ANSS sends out a signal in real time, which alerts government agencies and emergency response personnel.  more...

How does Hydrogen dust block light?

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Well, there are three major effects that allow hydrogen to absorb pretty much all the light you were going to see, and if you want a really technical explanation, I recommend you go here. Let’s go through all three of them, remembering that hydrogen will only make these tiny absorption lines if we didn’t have these three effects:  more...

How Big Weapons Hit Tiny Targets from Incredible Distances

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let's say our armed forces had to lend a hand in a conflict without deploying troops on the ground (*cough* *cough* Libya *cough*). How would they do that? Simple: GPS. Oh, and Lasers. And mechanized ordnance that is better at navigating than any meatbag with a map. In a tense conflict like Libya, where nobody—including the American public—wants US troops stomping around, it might seem like military options are limited. They are: to a gang of super-smart, incredibly accurate missiles and bombs launched from the ocean and sky. In some cases, a missile's solo journey can originate from a submerged submarine hundreds of miles from its target.  more...

How the Police Get Your Phone Records

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Every time I receive a call, my cell carrier takes note of the incoming telephone number, the time, date and duration of the conversation, and—because the call is sent through a network of cell towers—my location. As it turns out, I'm also carrying the right kind of smart phone, which means my device itself jots down my spot on the earth, as well. Between the brick and carrier, I've amassed a strikingly detailed digital portrait of every chat, check in, text and voice message I've received and sent. And since the diary of events is not in my possession, it's possible that other could get access.  more...

How to Turn an Idea into a Movement : 4 Great Tips

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• turn individual projects into an ultimate blueprint for the idea,
• identify the functions and resources to best activate citizen groups,
• create stories that effectively communicate the ideas of the successful projects, and
• devise innovative ways to share knowledge that will activate local groups.  more...

How The Magnets Work?

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Quoth the Insane Clown Posse, "Water, fire, air and dirt / Fucking magnets, how do they work?" Good question! Here's the answer.
Technically, a magnet is any object that has a magnetic field. Magnetic fields are generated by the movement of electrons. All matter contains atoms, right? Well, atoms possess electrons that move in a specific orbit and have a specific spin. That motion creates an itsy-bitsy electronic field. Thing is, the majority of atoms have electrons that exist in pairs and travel in opposing directions, which means the two fields cancel each other out. That's why most things aren't magnets.  more...

How Spontaneous Human Combustion Works ?

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Terrifying, isn't it? To imagine that you could be sitting in your favorite easy chair, happily reading UNIX in a Nutshell, and then your body just COMBUSTS—spontaneously—and you're a pile of ashes.
A coroner in Ireland ruled last week that's exactly what happened to Michael Faherty, 76, who burned to death last December while minding his own business and collecting his pension. In other words, this guy officially died from spontaneous combustion.
Except for the floor below and the ceiling above the body, the apartment and furnishings surrounding Faherty's body were left intact. more...

How Stealth Works ?

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Stealth bombers are not invisible—far from it, in fact. The Northrop Grumman-designed B-2 Spirit has a hard-to-ignore 175-foot wingspan and a thin, disk-like silhouette that makes it look like a cross between a stingray and an alien craft from a summer blockbuster. When one flies over your head, you stop and stare. The words holy shit might fall out of your mouth. Considering there are only 20 around, I'm going to argue the response is appropriate. They really don't look like anything else in the world. more...

How Will the World Really End?

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From asteroids to nuclear terrorism to worldwide hydrogen sulfide poisoning, a diverse menu of scenarios for humanity’s demise.  more...

How Dry Cleaning Works ( It’s Not What You Think)

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Dry cleaning has always belonged in a category of miracles, along with color-safe bleach, dry shampoo, and acupuncture. They seem to work, but is it only because we'd like to believe they do? So we decided to take a look past the counter and '80s-style decals to figure out, what is dry cleaning, anyway?
Spoiler alert! It's not actually dry.
Let's start from the beginning. In the 1800s, a French gentleman named Jolly Belin spilled some kerosene on either a gross tablecloth or some dirty laundry, depending on who you talk to.  more...

How Humans Formed Sentences ?

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Experiments with dogs, chimpanzees and other intelligent animals show that humans aren't the only beings who are able to learn the meanings of words. What distinguishes us is our ability to string those words together in meaningful ways, with one word order conveying something different than another. In short, sentences, not vocabulary, are the true hallmark of language.
Now, a team of researchers who study the neural basis of language have pinpointed the pathway in the brain that allows humans to combine words together into sentences.  more...

How The X-Rays Looking Through You ?

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What is an X Ray ? First of all, how do x-rays work? Well, they don't, of course, any more than light 'works'. X-rays describe radiation which is part of the spectrum which includes visible light, gamma rays and cosmic radiation. X-rays were discovered by Wilhelm Roentgen, almost by accident, in 1895, and within a year the new technology was already in general use for imaging the human body. You can imagine how much excitement this development caused at the turn of the 20th century, not just for the medical profession, but also for the general public. It wasn't only respectable x-ray clinics that were being set up and advertised, more...

How Does Anesthesia Work?

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If you’ve ever had surgery, unless you are super tough, you’ve gone through it with the benefit of anesthetics. But, how do these body-numbing elixirs work?
Prior to the invention of anesthesia in the mid-1800s, surgeons had to hack off limbs, sew up wounds and remove mysterious growths with nothing to dull the patient's pain but opium or booze. While these drugs may have numbed the patient, they didn’t always completely block the pain, or erase the memory of it.  more...

How Are Tattoos Removed?

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Bitterly regret getting that cartoon character carved into your calf on your 18^th birthday? Don't feel quite as passionate about Betty or Bill as you used to? All is not lost. Tattoo removal is possible, and here's how it's done.Years ago, when your ill-advised tat was being rendered, the tattoo artist used an electric tattoo machine to insert pigment into the dermal layer of your skin by rapidly and repeatedly rupturing your skin's top layer. more...

How black holes grow?

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A study led by a University of Utah astrophysicist found a new explanation for the growth of supermassive black holes in the center of most galaxies: they repeatedly capture and swallow single stars from pairs of stars that wander too close. Using new calculations and previous observations of our own Milky Way and other galaxies, "we found black holes grow enormously as a result of sucking in captured binary star partners," says physics and astronomy Professor Ben Bromley, lead author of the study, which is set for online publication April 2 in Astrophysical Journal Letters.  more...