Unlike traditional antivirus software, cloud antivirus refers to the type of antivirus that runs on the cloud(remote server). Cloud Antivirus will scan all your files through the internet and run the tests on their own server, in this way it won’t disrupt any of your computer activity nor will it slow down your computer. Another benefit of cloud antivirus is that instead of having to update traditional antivirus software routinely, it automatically updates the virus definitions in the cloud. Cloud antivirus software consists of client and Web service components working together. The client is a small program running on your local computer, which scans the system for malware Cloud antivirus is usually combined with other malware detection techniques, which are found in traditional anti-virus products. These approaches may include identifying malware based on suspicious heuristic or behavioral characteristics. Some examples of cloud anti-virus products are Panda Cloud Antivirus and Immunet.
Have you ever experienced a sudden feeling of familiarity while in a completely new place? Or the feeling you’ve had the exact same conversation with someone before?
This feeling of familiarity is, of course, known as déjà vu (a French term meaning “already seen”) and it’s reported to occur on an occasional basis in 60-80% of people. It’s an experience that’s almost always fleeting and it occurs at random.
So what is responsible for these feelings of familiarity?
Despite coverage in popular culture, experiences of déjà vu are poorly understood in scientific terms. Déjà vu occurs briefly, without warning and has no physical manifestations other than the announcement: “I just had déjà vu!”
Many researchers propose that the phenomenon is a memory-based experience and assume the memory centres of the brain are responsible for it.
The medial temporal lobes are vital for the retention of long-term memories of events and facts. Certain regions of the medial temporal lobes are important in the detection of familiarity, or recognition, as opposed to the detailed recollection of specific events.
The randomness of déjà vu experiences in healthy individuals makes it difficult to study in an empirical manner. Any such research is reliant on self-reporting from the people involved.
Glitches in the matrix
A subset of epilepsy patients consistently experience déjà vu at the onset of a seizure – that is, when seizures begin in the medial temporal lobe. This has given researchers a more experimentally controlled way of studying déjà vu.
Epileptic seizures are evoked by alterations in electrical activity in neurons within focal regions of the brain. This dysfunctional neuronal activity can spread across the whole brain like the shock waves generated from an earthquake. The brain regions in which this electrical activation can occur include the medial temporal lobes.
Electrical disturbance of this neural system generates an aura (a warning of sorts) of déjà vu prior to the epileptic event.
By measuring neuronal discharges in the brains of these patients, scientists have been able to identify the regions of the brain where déjà vu signals begin.
It has been found that déjà vu is more readily induced in epilepsy patients through electrical stimulation of the rhinal cortices as opposed to the hippocampus. These observations led to the speculation that déjà vu is caused by a dysfunctional electrical discharge in the brain.
These neuronal discharges can occur in a non-pathological manner in people without epilepsy. An example of this is a hyponogogic jerk, the involuntary twitch that can occur just as you are falling asleep.
It has been proposed that déjà vu could be triggered by a similar neurological discharge, resulting in a strange sense of familiarity.
Some researchers argue that the type of déjà vu experienced by temporal lobe epilepsy patients is different from typical déjà vu.
The déjà vu experienced prior to an epileptic seizure may be enduring, rather than a fleeting feeling in those who don’t have epileptic seizures. In people without epilepsy the vivid recognition combined with the knowledge that the environment is truly novel intrinsically underpins the experience of déjà vu.
Mismatches and short circuits
Déjà vu in healthy participants is reported as a memory error which may expose the nature of the memory system.Some researchers speculate that déjà vu occurs due to a discrepancy in memory systems leading to the inappropriate generation of a detailed memory from a new sensory experience.
This implies déjà vu is evoked by a mismatch between the sensory input and memory-recalling output. This explains why a new experience can feel familiar, but not as tangible as a fully recalled memory.
Other theories suggest activation of the rhinal neural system, involved in the detection of familiarity, occurs without activation of the recollection system within the hippocampus. This leads to the feeling of recognition without specific details.
Related to this theory, it was proposed that déjà vu is a reaction of the brain’s memory systems to a familiar experience. This experience is known to be novel, but has many recognisable elements, albeit in a slightly different setting. An example? Being in a bar or restaurant in a foreign country that has the same layout as one you go to regularly at home.
Even more theories exist regarding the cause of déjà vu. These span from the paranormal – past lives, alien abduction and precognitive dreams – to memories formed from experiences that are not first-hand (such as scenes in movies).
So far there is no simple explanation as to why déjà vu occurs, but advances in neuroimaging techniques may aid our understanding of memory and the tricks our minds seem to play on us.
The Dynamic Tower (also known as Dynamic Architecture Building or the Da Vinci Tower) is a planned 420-metre (1,378 ft), 80-floor moving skyscraper in Dubai, United Arab Emirates, designed by architect David Fisher. The 68-story tower will feature floors that can be individually rotated via voice commands. Similar to the Suite Vollard completed in 2001 in Brazil, each floor
will be able to rotate independently. This will result in a constantly changing shape of the tower. Each floor will rotate at maximum of 6 metres (20 ft) per minute, or one full rotation in 90 minutes. It will be the world’s first prefabricated skyscraper with 40 factory-built modules for each floor. The entire tower will be powered from wind turbines and solar panels. Enough surplus electricity should be produced to power five other similar sized buildings in the vicinity. The turbines will be located between each of the rotating floors.
And Yes it is the “INVISIBLE” what you read is right! The much awaited super invisible car finally made by the Mercedes Benz. Its not a fantasy any more, and they have done it. Its amazing to hear that we are finally sitting in the world where such technology now really exist!
They have put down some super technology of LED to produce a invisible car. All they have done is covered all of the car with LED and given cameras at the sides so that the camera takes image of the other side and make it appear on LED on the other side, making a phenomenon of appearance of nothing in between.
Music was sent down a telephone line for the first time in 1876, the year the phone was invented.
Sound travels through water 3 times faster than through air.
A square piece of dry paper cannot be folded in half more than 7 times.
Air becomes liquid at about minus 190 degrees Celsius.
Liquid air looks like water with a bluish tint.
A scientific satellite needs only 250 watts of power, the equivalent used by two hour light bulbs, to operate.
The thin line of cloud that forms behind an aircraft at high altitudes is called a contrail.
Radio waves travel so much faster than sound waves that a broadcast voice can be heard sooner 18,000 km away than in the back of the room in which it originated.
A US ton is equivalent to 900 kg (2000 pounds). A British ton is 1008 kg (2240 pounds), called a gross ton.
Industrial hemp contains less than 1% of THC, the psychoactive component of marijuana.
Since space is essentially empty it cannot carry sound. Therefor there is no sound in space, at least not the sort of sound that we are used to.
The Space Shuttle always rolls over after launch to alleviate structural loading, allowing the shuttle to carry more mass into orbit.
The word “biology” was coined in 1805 by Jean-Baptiste Lamarck.
Most of the air is about 78% nitrogen gas. Only 21% consists of oxygen. The remaining 1% consists of carbon dioxide, argon, neon, helium, krypton, hydrogen, xenon and ozone.
Argon is used to fill the space in most light bulbs. Neon is used in fluorescent signs. Fluorescent lights are filled with mercury gas.
Hydrogen gas is the least dense substance in the world.
Water expands by about 9% as it freezes.
The surface of hot water freezes faster than cold water but the rest of the water will remain liquid longer than in a cold sample.
The smallest transistor is 50-nanometres wide – roughly 1/2000 the width of a human hair.
A compass does not point to the geographical North or South Pole, but to the magnetic poles.
The double-helix structure of DNA was discovered in 1953 by James Watson and Francis Crick. The length of a single human DNA molecule, when extended, is 1.7 metres (5 ft 5 in).
In a desert, a mirage is caused when air near the ground is hotter than air higher up. As light from the sun passes from cooler to warmer air, it speeds up and is refracted upward, creating the image of water.
The typical bolt of lightning heats the atmosphere to 50,000 degrees Fahrenheit.
An electric oven uses one kilowatt-hour of electricity in about 20 minutes, but one kilowatt-hour will power a TV for 3 hours, run a 100-watt bulb for 12 hours, and keep an electric clock ticking for 3 months.
courtesy: Science fast facts
160 billion emails are sent daily, 97% of which are spam.
Spam generates 33bn KWt-hours of energy every year, enough to power 2.4 million homes, producing 17 million tons of CO2.
9 out of every 1,000 computers are infected with spam.
Spammer get 1 response to every 12 million emails they send (yet it still makes them a small profit).
A twillionaire is a twitterer with a million or more followers.
There are some 1 billion computers in use.
There are some 2 billion TV sets in use.
There are more than 4 billion cell phones in use. About 3 million cell phones are sold every day.
The first known cell phone virus, Cabir.A, appeared in 2004.
Since 2008, video games have outsold movie DVDs.
Amazon sells more e-books than printed books.
Facebook has 500 million registered users… about 100 million less than QQ.
About 1.8 billion people connect to the Internet, 450 million of them speak English.
Google indexed it’s 1 trillionth unique URL on July 25, 2008. That is thought to be about 20% of all the pages on the Internet but a high percentage of the World Wide Web (the public Internet).
One google search produces about 0.2g of CO2. But since you hardly get an answer from one search, a typical search session produces about the same amount of CO2 as does boiling a kettle.
Google handles about 1 billion search queries per day, releasing some 200 tons of CO2 per day.
The average US household uses 10.6 megawatt-hours (MWh) electricity per year.
Google uses an estimated 15 billion kWh of electricity per year, more than most countries. However, google generates a lot of their own power with their solar panels.
The first public cell phone call was made on April 3, 1973 by Martin Cooper.
The Motorola DynaTAC 8000X was the first cell phone sold in the US; launched on April 11, 1984, it was designed by Rudy Krolopp and weighed 2 pounds.
About 20% of the videos on YouTube are music related.
24 hours of video viewing is uploaded every minute on YouTube.
People view 15 billion videos online every month.
On average, US onliners view 100 videos per month each.
Flickr hosts some 5 billion photographs, Facebook hosts more than 15 billion.
1 Bit = Binary Digit
8 Bits = 1 Byte
1000 Bytes = 1 Kilobyte
1000 Kilobytes = 1 Megabyte
1000 Megabytes = 1 Gigabyte
1000 Gigabytes = 1 Terabyte
1000 Terabytes = 1 Petabyte
1000 Petabytes = 1 Exabyte
1000 Exabytes = 1 Zettabyte
1000 Zettabytes = 1 Yottabyte
1000 Yottabytes = 1 Brontobyte
1000 Brontobytes = 1 Geopbyte
Technically speaking, the sum is 1024 bytes.
source: Technology fast facts
Spontaneous human combustion (SHC) is the alleged burning of a person’s body without a readily apparent, identifiable external source of ignition. The combustion may result in simple burns and blisters to the skin, smoking, or a complete incineration of the body. The latter is the form most often ‘recognized’ as SHC.
There is much speculation and controversy over SHC. It is not a proven natural occurrence, but many theories have attempted to explain SHC’s existence and how it may occur. The two most common explanations offered to account for apparent SHC are the non-spontaneous “wick effect” fire, and the rare discharge called static flash fires. Although mathematically it can be shown that the human body contains enough energy stored in the form of fat and other tissues to consume it completely, in normal circumstances bodies will not sustain a flame on their own.
History of Spontaneous Human CombustionMany people believe that Spontaneous Human Combustion was first documented in such early texts as the Bible, but, scientifically speaking, these accounts are too old and secondhand to be seen as reliable evidence.
Over the past 300 years, there have been more than 200 reports of persons burning to a crisp for no apparent reason.
The first reliable historic evidence of Spontaneous Human Combustion appears to be from the year 1673, when Frenchman Jonas Dupont published a collection of Spontaneous Human Combustion cases and studies entitled De Incendiis Corporis Humani Spontaneis. Dupont was inspired to write this book after encountering records of the Nicole Millet case, in which a man was acquitted of the murder of his wife when the court was convinced that she had been killed by spontaneous combustion. Millet, a hard-drinking Parisian was found reduced to ashes in his straw bed, leaving just his skull and finger bones. The straw matting was only lightly damaged. Dupont’s book on this strange subject brought it out of the realm of folkloric rumor and into the popular public imagination.
On April 9, 1744, Grace Pett, 60, an alcoholic residing in Ipswich England, was found on the floor by her daughter like “a log of wood consumed by a fire, without apparent flame.” Nearby clothing was undamaged.
In the 1800’s is evidenced in the number of writers that called on it for a dramatic death scene. Most of these authors were hacks that worked on the 19th century equivalent of comic books, “penny dreadfuls”, so no one got too worked up about it; but two big names in the literary world also used SHC as a dramatic device, and one did cause a stir.
The first of these two authors was Captain Marryat who, in his novel Jacob Faithful, borrowed details from a report in the Times of London of 1832 to describe the death of his lead character’s mother, who is reduced to “a sort of unctuous pitchey cinder.”
Twenty years later, in 1852, Charles Dickens used Spontaneous Human Combustion to kill off a character named Krook in his novel Bleak House. Krook was a heavy alcoholic, true to the popular belief at the time that SHC was caused by excessive drinking. The novel caused a minor uproar; George Henry Lewes, philosopher and critic, declared that SHC was impossible, and derided Dickens’ work as perpetuating a uneducated superstition. Dickens responded to this statement in the preface of the 2nd edition of his work, making it quite clear that he had researched the subject and knew of about thirty cases of SHC. The details of Krook’s death inBleak House were directly modeled on the details of the death of the Countess Cornelia de Bandi Cesenate by this extraordinary means; the only other case that Dickens actually cites details from is the Nicole Millet account that inspired Dupont’s book about 100 years earlier. book about 100 years earlier.
In 1951, the Mary Reeser case recaptured the public interest in Spontaneous Human Combustion. Mrs. Reeser, 67, was found in her apartment on the morning of July 2, 1951, reduced to a pile of ashes, a skull, and a completely undamaged left foot. This event has become the foundation for many a book on the subject of SHC since, the most notable being Michael Harrison’s Fire From Heaven, printed in 1976. Fire From Heavenhas become the standard reference work on Spontaneous Human Combustion.
On May 18, 1957, Anna Martin, 68, of West Philadelphia, Pennsylvania, was found incinerated, leaving only her shoes and a portion of her torso. The medical examiner estimated that temperatures must have reached 1,700 to 2,000 degrees, yet newspapers two feet away were found intact.
On December 5, 1966, the ashes of Dr. J. Irving Bentley, 92, of Coudersport, Pennsylvania, were discovered by a meter reader. Dr. Bentley’s body apparently ignited while he was in the bathroom and burned a 2-1/2-by-3-foot hole through the flooring, with only a portion of one leg remaining intact. Nearby paint was unscorched.
July 1, 1951 — Perhaps the most famous case occurred in St. Petersburg, Florida. Mary Hardy Reeser, a 67-year-old widow, spontaneously combusted while sitting in her easy chair. The next morning, her next door neighbor tried the doorknob, found it hot to the touch and went for help. She returned to find Mrs. Reeser, or what was left of her, in a blackened circle four feet in diameter. All that remained of the 175-pound woman and her chair was a few blackened seat springs, a section of her backbone, a shrunken skull the size of a baseball, and one foot encased in a black stain slipper just beyond the four-foot circle. Plus about 10 pounds of ashes. The police report declared that Mrs. Reeser went up in smoke when her highly flammable rayon-acetate nightgown caught fire, perhaps because of a dropped cigarette. But one medical examiner stated that the 3,000-degree heat required to destroy the body should have destroyed the apartment as well. In fact, damage was minimal – the ceiling and upper walls were covered with soot. No chemical accelerants, incidentally, were found.
In 1944 Peter Jones, survived this experience and reported that there was no sensation of heat nor sighting of flames. He just saw smoke. He stated that he felt no pain.
Theories About Spontaneous Human Combustion
– Alchoholism – many Spontaneous Human Combustion vicitms have been alcoholics. But experiments in the 19th century demonstrated that flesh impregnated with alcohol will not burn with the intense heat associated with Spontaneous Human Combustion.
– Deposits of flammable body fat – Many victims have been overweight – yet others have been skinny.
– Devine Intervention – Centuries ago people felt that the explosion was a sign from God of devine punishment.
– Build-up of static electricity – no known form of electrostatic discharge could cause a human to burst into flames.
– An explosive combination of chemicals can form in the digestive system – due to poor diet.
– Electrical fields that exist within the human body might be capable of ‘short circuiting’ somehow, that some sort of atomic chain reaction could generate tremendous internal heat.
No satisfactory explanation of Spontaneous Human Combustion has ever been given. It is still an unsolved mystery.
What Remains After a Spontaneous Human Combustion Event
– The body is normally more severely burned than one that has been caught in a normal fire.
– The burns are not distributed evenly over the body; the extremities are usually untouched by fire, whereas the torso usually suffers severe burning.
– In some cases the torso is completely destroyed, the bones being reduced completely to ash.
– Small portions of the body (an arm, a foot, maybe the head) remain unburned.
– Only objects immediately associated with the body have burned; the fire never spread away from the body. SHC victims have burnt up in bed without the sheets catching fire, clothing worn is often barely singed, and flammable materials only inches away remain untouched.
– A greasy soot deposit covers the ceiling and walls, usually stopping three to four feet above the floor.
– Objects above this three to four foot line show signs of heat damage (melted candles, cracked mirrors, etc.)
– Although temperatures of about 3,000 degrees Fahrenheit are normally required to char a body so thoroughly (crematoria, which usually operate in the neighborhood of 2,000 degrees, leave bone fragments which must be ground up by hand), frequently little or nothing around the victim is damaged, except perhaps the exact spot where the deceased ignited.
Types of Spontaneous Human Combustion
Some events of Spontaneous Human Combustion are witnessed but some are not.
All reported cases have occurred indoors.
The victims were always alone for a long period of time.
Witnesses who were nearby (in adjacent rooms) report never hearing any sounds, such as cries of pain or calls for assistance.
In the witnessed combustions – people are actually seen by witnesses to explode into flame; most commonly. Here the witnesses agree that there was no possible source of ignition and/or that the flames were seen to erupt directly from the victim’s skin. Unfortunately, most of the known cases of this type are poorly documented and basically unconfirmed. Sometimes there are no flames seen by the witness.
Non-fatal cases – Unfortunately, the victims of these events generally have no better idea of what happened to them than do the investigators; but the advantage to this grouping is that a survivor can confirm if an event had a simple explanation or not. Thus, there are far fewer cases of Spontaneous Human Combustion with survivors that can be explained away by skeptics without a second look.
Sometimes victims develop burns on their bodies that have no known external cause. These strange wounds commonly start as small discomforts that slowly grow into large, painful marks.
Sometimes the victim will exhibit a mysterious smoke from the body. In these odd and rare occurrences smoke is seen to emanate from a person, with no associated fire or source of smoke other than the person’s body.
On the BBC Television program Q.E.D. (quod erat demonstrandum, which means “that which was to be demonstrated”), Dr. John DeHaan demonstrated the wick effect with a dead pig. They wrapped the poor thing in a blanket, then used a small drop of gasoline and a spark. It took a while for the flame to catch, but eventually it did, and flames began burning intensely hot but with low flames. The pig burned completely – even its bones were incinerated. But the surroundings were mostly spared – only a nearby television, the floor below and the ceiling above the pig were affected by the fire. It’s exactly what the result of most reported cases of spontaneous human combustion looks like.
The theory behind the wick effect is that the spark (for a human, it might be a burning cigarette or a spark from a fireplace) burns through clothing, then splits the skin enough to access subcutaneous fat. Most victims are alone and presumed to have fallen asleep so they don’t immediately notice the spark. The fat is then absorbed into the clothing and behaves like a candle wick, fueling the flames until no fat is left.
You might think that a pig has a lot more fat than a human. We actually have a similar fat content to our porcine friends. So it makes sense that limbs would sometimes remain intact, since they contain less fat.
As for the recent case in Ireland, perhaps the coroner hand’t heard of the wick effect. But to this layperson’s eye, Mr. Faherty seems like a prime candidate. He was found next to an open fireplace, which gives a potential source for a spark.
One other interesting note: Faherty was diabetic. According to this “Material Safety Data Sheet ” from ScienceLab, a firm that supplies chemical and laboratory equipment, insulin may be combustible at high temperature. Just sayin’.