Bike Riding Tips and Tricks

Now a days the youth are more passionate about their bikes and adventurous rides with it. The bikes and stunts are really a guy thing which drives the riders to crazy fun like nothing else. But they don’t realise the risk underneath their stunts until they are once experienced for. The following tips will be quite useful for the begginers who are going to be a good riders in future. With all senses a rider has to control the following:
 • Brake 
• Clutch 
• Acclerator 
• Signals lights 
• Sharp turns 
• 150 degree view ahead 
With perfection in these the ride will be under control and happy....but lacking in any thing of above may result in severe disasters.. Common mistakes by Riders: 
• Applying brakes while crossing sharp turns which result in skidding of vehicle. 
• Making the vehicle to run down street with engine off. 
• Not maintaining the center of mass of (bike+rider) jointly.
 • Careless ride by consuming alcohol.,etc.

If you can’t turn a crossing sharply then just apply brakes ahead and then slowly make the turn rather than skidding over the road. Riding the bike downwards with engine off makes the rider to loose control over the vehicle.Remember that an engine in On state works greatly than the engine in Off state.The person should understand his bike well enough to maintaine the center of gravity always aligned in correct manner.The following fig shows the difference

By carefull pressuring up your weight on the foot rest will do a great job under sharp turns. Always drive on the right side of the road and for some countries like India you should align yourself on the left side of the road as per the traffic signs and signals.Use hand signals when ever and where ever necessary.

YOUR DEAR ONES ARE WAITING AT HOME, THINK ABOUT THEM AND DRIVE SAFE. K@run@

NASA's newly landed Mars science rover Curiosity snapped the first color image of its surroundings while an orbiting sister probe photographed litter left behind during the rover's daring do-or-die descent to the surface, scientists said Tuesday.

Curiosity's color image, taken with a dust cover still on the camera lens, shows the north wall and rim of Gale Crater, a vast basin where the nuclear-powered, six-wheeled rover touched down Sunday night after flying through space for more than eight months.

The picture proved that one of the rover's key instruments, a camera known as the Mars Hand Lens Imager, or MAHLI, was in good working order affixed to the end of Curiosity robot arm.

Designed to take magnified, close-up images of rocks and other objects, or wide shots of landscapes, the camera currently remains stowed on the rover's deck. But once in full operation, scientists can use it to capture fine details with a resolution as high as 13.9 microns per pixel -- several times finer than the width of a human hair.

"It works. It's awesome. Can't wait to open it and see what else we can see," Curiosity scientist Ken Edgett told reporters on Tuesday.

The latest images were relayed to Earth during the rover's first full day on the Red Planet, following a descent through the Martian atmosphere and touchdown on Sunday night that NASA hailed as the most elaborate and challenging ever in robotic spaceflight.

The $2.5 billion project is NASA's first astrobiology mission since the Viking probes of the 1970s, and the landing came as a much-welcome success for a space agency beleaguered by science budget cuts and the recent cancellation of its 30-year-old space shuttle program.

The primary mission of Curiosity, touted as first fully equipped mobile laboratory ever sent to another world, is to search for evidence that the planet most similar to Earth now harbors, or once hosted, the key ingredients necessary for the evolution of microbial life.

But mission controllers at the Jet Propulsion Laboratory in California plan to put the rover and its instruments through several weeks of thorough checks and trial operations before gradually beginning science exploration in earnest.

They want to be sure the car-sized vehicle and its sensitive components came through the tricky, jarring final leg of Curiosity's 352 million-mile (566 million-km) journey to Mars without damage.

Encased in a protective capsule, the rover blasted into the Martian sky at 17 times the speed of sound and slowed itself using friction from steering through the thin atmosphere.

Closer to the ground, the vessel was slowed further by a giant, supersonic parachute before a jet backpack and flying "sky crane" took over to deliver Curiosity the last mile to the surface at 10:32 p.m. PDT on Sunday (1:32 a.m. EDT on Monday/0532 GMT on Monday).

A day later, NASA's sharp-eyed Mars Reconnaissance Orbiter surveyed the scene from a vantage point 186 miles above the planet and found Curiosity's approach to Gale Crater littered with discarded equipment used to position the rover near a towering mountain rising from the crater floor.

"You can see all the components of the entry, descent and landing system," said camera scientist Sarah Milkovich.

The satellite's "crime scene" image, released Tuesday, lays out the trail of debris beginning about 1,312 yards from Curiosity's landing site. That is where the heat shield came to rest it was jettisoned during descent.

The back shell of the capsule, which contained the parachute, ended up about 673 yards away from the rover. The last part of the elaborate landing system, the rocket-powered "sky crane" crash-landed 711 yards away after lowering Curiosity to the ground on a tether.

Mars Reconnaissance Orbiter's image shows the heat shield in a region dotted with small craters, while Curiosity is surrounded by rounded hills and fewer craters. To the north is a third type of terrain riddled with buttes, mesas and pits.

"If it were up to me I would go to where those three come together, so we could start to get the flavor of what's going on here in terms of the different geologic materials," Edgett said.

Scientists expect it will be weeks until Curiosity begins roving and months before it heads to the 3-mile (5-km) high mountain at the center of the crater, the primary target for the two-year science mission.

Scientists believe the mound, known as Mount Sharp, may have formed from the remains of sediment that once completely filled the basin, offering a potentially valuable geologic record of the history of Mars.

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HIGGS BOSAN---Proton sub particles

Great invention for the decade which gonna change the future......Higgs Bosan was discovered after blasting the protons......many scientists strived so hard for 50 years for this....including our indians....Named as Higgs BOSan after the Indian scientist BOSE
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Happens Amazingly.......

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Brain power------GE

That’s what we call brain power ;)

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BLOOM BOX

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Amazing speed and memory (information)

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Rail Gun

Railgun

More PowerPoint presentations from aSGuest89121

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F18 cockpit footage makes you want to be a fighter pilot

I wanted to be a pilot

It’s something 99% of us will never experience, and at the same time anyone getting the opportunity will probably find every roller-coaster boring afterwards. But through the use of a GoPro camera, we can all get a better idea of what it’s like to sit inside an F-18 during take-off and in flight.

The speed of such a craft can’t really be imagined unless you’ve been in something similar on the ground, such as in a very fast car on a track day. Even then, you won’t get the sense of maneuverability as can be seen when the other F-18 pulls a left turn during the video and just disappears. I also like the way those droplets of water disappear from the canopy when both engines kick in for take-off.

In an age that sees us need to replace our computers every few years, and where we change our cars on a similar schedule, it’s incredible to think the F-18 Super Hornet has been flying since 1995. The smaller Hornet model has been flying since 1978. The supersonic jet can reach Mach 1.8 (1,190mph) and carries bombs, missiles, and a Vulcan nose-mounted gatling gun firing 20mm rounds. The range of the Super Hornet is 2,346km.

I’m not sure what the exact GoPro model used was to capture this footage, but it doesn’t do the brand any harm to see it inside a jet. The footage is excellent, with no noticeable loss of quality even when capturing the rolls and loops the F-18 is performing.

So, who wants to be a fighter pilot?

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Top Ten Ancient Inventions You Think Are Modern

The industrial revolutions and the years following them produced some of the greatest inventions known to man – and certainly the most complex. Because this has been a part of our history for so long now we tend to presume that much of our modern conveniences have come from then. What is surprising is how many of the things that we use every day have been in use by humans for thousands of years. This list of ten things all predate the birth of Christ and they are all things that we are familiar with if not regular users of.

10

Plywood

Plywood has been made for thousands of years; the earliest known occurrence of plywood was in Ancient Egypt around 3500 BC when wooden articles were made from sawn veneers glued together crosswise. This was originally done due to a shortage of fine wood. Thin sheets of high quality wood were glued over a substrate of lower quality wood for cosmetic effect, with incidental structural benefits. This manner of inventing plywood has occurred repeatedly throughout history.

9

Plumbing

Standardized earthenware plumbing pipes with broad flanges making use of asphalt for preventing leakages appeared in the urban settlements of the Indus Valley Civilization by 2700 BC. Plumbing originated during the ancient civilizations such as the Greek, Roman, Persian, Indian, and Chinese civilizations as they developed public baths and needed to provide potable water, and drainage of wastes. Improvement in plumbing systems was very slow, with virtually no progress made from the time of the Roman system of aqueducts and lead pipes until the 19th century. Eventually the development of separate, underground water and sewage systems eliminated open sewage ditches and cesspools.

8

Ice Skates

According to a study done by Federico Formenti, University of Oxford, and Alberto Minetti, University of Milan, Finns were the first to develop ice skates some 5,000 years ago from animal bones. This was important for the Finnish populations to save energy in harsh winter conditions when hunting in Finnish Lakeland. The first skate to use a metal blade was found in Scandinavia and was dated to 200 AD and was fitted with a thin strip of copper folded and attached to the underside of a leather shoe.

7

Perfume

The world’s first recorded chemist is considered to be a woman named Tapputi, a perfume maker who was mentioned in a cuneiform tablet from the second millennium BC in Mesopotamia. She distilled flowers, oil, and calamus with other aromatics then filtered and put them back in the still several times. Recently, archaeologists have uncovered what are believed to be the world’s oldest perfumes in Pyrgos, Cyprus. The perfumes date back more than 4,000 years. The perfumes were discovered in an ancient perfumery. At least 60 stills, mixing bowls, funnels and perfume bottles were found in the 43,000-square-foot (4,000 m2) factory. Four of the perfumes have been re-created from residues found at the site.

6

Metrology and Calibration

The inhabitants of the Indus Valley Civilization (c. 3000–1500 BC, Mature period            2600–1900       BC) developed a sophisticated system of standardization, using weights and measures, evident by the excavations made at the Indus valley sites. This technical standardization enabled gauging devices to be effectively used in angular measurement and measurement for construction. Calibration was also found in measuring devices along with multiple subdivisions in case of some devices. Metrology has existed in some form or another since antiquity. The earliest forms of metrology were simply arbitrary standards set up by regional or local authorities, often based on practical measures such as the length of an arm. The earliest examples of these standardized measures are length, time, and weight.

5.  Lenses

The Nimrud lens is a 3000 year old piece of rock crystal, which was unearthed by Austen Henry Layard at the Assyrian palace of Nimrud. It may have been used as a magnifying glass, or as a burning-glass to start fires by concentrating sunlight. Assyrian craftsmen made intricate engravings, and could have used such a lens in their work. Italian scientist Giovanni Pettinato of the University of Rome has proposed that the lens was used by the ancient Assyrians as part of a telescope; this would explain why the ancient Assyrians knew so much about astronomy.

4

Central Heating

Cities in the northern Ancient Roman civilization used central heating systems from around 1,000 BC, conducting air heated by furnaces through empty spaces under the floors and out of pipes in the walls — a system known as a hypocaust. Hypocausts were used for heating public baths and private houses. The floor was raised above the ground by pillars, called pilae stacks, and spaces were left inside the walls so that hot air and smoke from the furnace (praefurnium) would pass through these enclosed areas and out of flues in the roof, thereby heating but not polluting the interior of the room. Ceramic box tiles were placed inside the walls to both remove the hot burned air, and also to heat the walls. A similar system of central heating was used in ancient Korea, where it is known as ondol. In the image above you can see the sections beneath the floor where the heated air would flow.

3

Cataract Surgery

The earliest records of cataract surgery are from the Bible as well as early Hindu records. Cataract surgery was known to the Indian physician Sushruta (6th century BC – pictured above). In India, cataract surgery was performed with a special tool called the Jabamukhi Salaka, a curved needle used to loosen the lens and push the cataract out of the field of vision. The eye would later be soaked with warm butter and then bandaged. Though this method was successful, Susruta cautioned that cataract surgery should only be performed when absolutely necessary.

2

Dentist’s Drill

The Indus Valley Civilization has yielded evidence of dentistry being practiced as far back as 7000 BC. This earliest form of dentistry involved curing tooth related disorders with bow drills operated, perhaps, by skilled bead craftsmen. The reconstruction of this ancient form of dentistry showed that the methods used were reliable and effective. Cavities of 3.5 mm depth with concentric grooves indicate use of a drill tool. The age of the teeth has been estimated at 9000 years.

1

Plastic Surgery

Plastic surgery is one of the oldest forms of surgery practiced. Nose-reconstruction operations were probably performed in ancient India as early as 2000 BC, when amputation of the nose was a form of punishment; the caste of potters eventually devised a method for rebuilding the nose by using a portion of the forehead, a technique still employed today. Some discussion of such surgery also appears in ancient Greek and Roman tracts. Pictured above is Walter Yeo, the first man to benefit from modern plastic surgery. The image on the right was taken after Yeo received a skin graft.

This article is licensed under the GFDL because it contains quotations from Wikipedia.
“Plastic Surgery,” Microsoft® Encarta® Online Encyclopedia 2008 © 1997-2008 Microsoft Corporation. All Rights Reserved.

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How does fire behave in zero gravity?

Amazingly found 

• TOP STORIES

MAD SCIENCE

We all know about how fire behaves in outer space: It doesn't. All those action movies were wrong. Fire needs oxygen and oxygen isn't abundant outside of Earth's atmosphere. Fires can happen inside a contained, oxygenated environment in space, but they don't behave the way they do on Earth. The Earth's gravity imposes a lot of conditions on fire that wouldn't happen in microgravity or zero g. Here's why astronauts can't burn a candle at both ends.

Image: NASA - LRC

Gravity it is a mixed bag. Sure, it helps maintain muscle tone, and bone density, and allows us to eat soup in a bowl without any mess. Unfortunately, it also tries to kill us by tripping us up and pulling heavy objects down onto us. It turns out that, not content with blunt force trauma, gravity is also trying to kill us with fire. When a fire starts, it heats up the air around it. This causes that particular section of air to become less dense. That low-density section of air heads upwards because gravity is pulling down on everything and colder, denser sections of air muscle it out of the way to get closest to the earth. This is lucky for the fire, because the only reason the air got hot was because the fire was consuming the oxygen. When the low-density air got pushed up and out of the way by the oxygen-rich air, the fire got a new delivery of fresh oxygen to burn.

Not so in zero gravity. The air that's is heated by the fire does expand, but with no gravity pulling denser air down into its space, it just . . . stays there. Meanwhile the fire continues consuming oxygen and putting out carbon dioxide until it smothers itself. Space travel is so complicated, with so many problems having such drastic consequences, fire is one of the few ways that astronauts really catch a break. Unless there is some kind of air circulation system blowing over the fire, giving it fresh oxygen, a fire in a space craft would put itself out. Which is not to say that fire isn't discouraged. Here an astronaut in the International Space Station nervously chuckles that he can't give a demonstration of how a lit match will put itself out up there. There are rules about that kind of thing.

Some fires, for example candle flames, also change color in space. Part of a burning candle is very endothermic - heat consuming. When a candle wick burns, it is being taken apart molecule by molecule. This separation takes up heat. However, when the molecules, in this case long strings of carbon, get pushed upwards, they're burned like charcoal and glow bright yellow. In zero gravity, the carbon strings don't get burned, and the flame is blue, cooler, and much much dimmer. As awesome as it might seem, fire in zero gravity is a very low-drama affair.

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The Largest and the Smallest

The size of the universe for now is 1,000,000,000,000,000,000,000,000 meters (1 Yottameter) i.e diameter of universe at present,however it expands above this in its own manner and inertia....

The size of sub-sub atomic particle NUTRINO is 0.000000000000000000000001 meter (1 Yoctometer) i.e diameter of nutrino....Planks length is 10^-35, any length less than this has no physical meaning......

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1 sec

The second has been defined to be

the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium 133 atom.

i.e. the time taken by the electron in cesium atom to transfer from one energy band to the other.....

Most of us don't know what exactly one second of time period refers to and how it is defined ...so here it is.

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Fastness Makes You Heavy

The faster you move, the heavier you get

If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount.
Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it can’t go very much faster. But you’ve given it extra energy, and that energy has to go somewhere.
Where it goes is mass. According to relativity, mass and energy are equivalent. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds – Usain Bolt is not noticeably heavier when running than when still – but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.

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Black holes

7.Black holes aren’t black

They’re very dark, sure, but they aren’t black. They glow, slightly, giving off light across the whole spectrum, including visible light.
This radiation is called “Hawking radiation”, after the former Lucasian Professor of Mathematics at Cambridge University Stephen Hawking, who first proposed its existence. Because they are constantly giving this off, and therefore losing mass, black holes will eventually evaporate altogether if they don’t have another source of mass to sustain them; for example interstellar gas or light.
Smaller black holes are expected to emit radiation faster compared to their mass than larger ones, so if – as some theories predict – the Large Hadron Collider creates minuscule holes through particle collisions, they will evaporate almost immediately. Scientists would then be able to observe their decay through the radiation.


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Universe missing

4.Almost all of the Universe is missing


There are probably more than 100 billion galaxies in the cosmos. Each of those galaxies has between 10 million and a trillion stars in it. Our sun, a rather small and feeble star (a “yellow dwarf”, indeed), weighs around a billion billion billion tons, and most are much bigger. There is an awful lot of visible matter in the Universe.
But it only accounts for about two per cent of its mass.
We know there is more, because it has gravity. Despite the huge amount of visible matter, it is nowhere near enough to account for the gravitational pull we can see exerted on other galaxies. The other stuff is called “dark matter”, and there seems to be around six times as much as ordinary matter.
To make matters even more confusing, the rest is something else called “dark energy”, which is needed to explain the apparent expansion of the Universe. Nobody knows what dark matter or dark energy is.


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Can Compress whole atoms into sugar cube.

2.All the matter that makes up the human race could fit in a sugar cube


Atoms are 99.9999999999999 per cent empty space. As Tom Stoppard put it: "Make a fist, and if your fist is as big as the nucleus of an atom, then the atom is as big as St Paul's, and if it happens to be a hydrogen atom, then it has a single electron flitting about like a moth in an empty cathedral, now by the dome, now by the altar."
If you forced all the atoms together, removing the space between them, crushing them down so the all those vast empty cathedrals were compressed into the first-sized nuclei, a single teaspoon or sugar cube of the resulting mass would weigh five billion tons; about ten times the weight of all the humans who are currently alive.
Incidentally, that is exactly what has happened in a neutron star, the super-dense mass left over after a certain kind of supernova.
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universal concept of massive bodies

1.If the Sun were made of bananas, it would be just as hot?


The Sun is hot, as the more astute of you will have noticed. It is hot because its enormous weight – about a billion billion billion tons – creates vast gravity, putting its core under colossal pressure. Just as a bicycle pump gets warm when you pump it, the pressure increases the temperature. Enormous pressure leads to enormous temperature.
If, instead of hydrogen, you got a billion billion billion tons of bananas and hung it in space, it would create just as much pressure, and therefore just as high a temperature. So it would make very little difference to the heat whether you made the Sun out of hydrogen, or bananas, or patio furniture.
Edit: this might be a little confusing. The heat caused by the internal pressure would be similar to that of our Sun. However, if it's not made of hydrogen, the fusion reaction that keeps it going wouldn't get under way: so a banana Sun would rapidly cool down from its initial heat rather than burning for billions of years. Thanks to people who pointed this out.


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