Did u knw that ?

07/03/2013

ਫੇਸਬੁੱਕ ਦੇ ਜਨਮਦਾਤਾ ਮਾਰਕ ਜੁਕਰਬਰਗ ਦੁਨੀਆ ਦਾ 35 ਵਾਂ ਸਭ ਤੋਂ ਅਮੀਰ ਤੇ ਸਾਧਾਰਨ ਇਨਸਾਨ ਹੈ। ਅਸੀਂ ਅੱਜ ਸਾਰੇ ਆਪਸ ਵਿੱਚ ਫੇਸਬੁੱਕ ਦੇ ਜਰੀਏ ਜੁੜੇ ਹੋਏ ਹਨ ਇਸ ਵੈਬਸਾਈਟ ਦੇ 85 ਕਰੋੜ ਯੂਸਰ ਹਨ ਤੇ ਦੁਨੀਆਂ ਭਰ ਵਿੱਚ ਸਭ ਤੋਂ ਜਿਆਦਾ ਦੇਖੀ ਜਾਣ ਵਾਲੀ ਵੈਬਸਾਈਟ ਹੈ।

ਇਸ ਵੈਬਸਾਈਟ ਨੇ ਪੂਰੀ ਦੁਨੀਆ ਵਿੱਚ ਸੋਸਲ ਮੀਡੀਆ ਵਿੱਚ ਇਕ ਕ੍ਰਾਂਤੀ ਲੈ ਆਉਂਦੀ ਹੈ ਤੇ ਦੁਨੀਆਂ ਵਿੱਚ ਕਾਫੀ ਵੱਡੇ ਵੱਡੇ ਇਨਕਲਾਬ ਇਸ ਵੈਬਸਾਈਟ ਦੀ ਵਜਹ ਕਰਕੇ ਆ ਰਹੇ ਹਨ । ਕੀ ਤੁਸੀਂ ਜਾਣਦੇ ਹੋ ਕਿ ਇਹ ਵੈਬਸਾਈਟ ਕਿਸਨੇ ਬਣਾਈ ਹੈ ।

ਮਾਰਕ ਜੁਕਰਬਰਗ ਨਾਮ ਦੇ ਇਕ 27 ਸਾਲਾਂ ਨੌਜੁਵਾਨ ਨੇ 2003 ਵਿੱਚ ਇਸ ਵੈਬਸਾਈਟ ਦੀ ਸੁਰੂਆਤ ਕੀਤੀ , ਜੋ ਕਿ ਇਕ ਪ੍ਰੋਜੈਕਟ ਦਾ ਹਿੱਸਾ ਸੀ , ਪਰ ਆਪਦੀ ਹੋਂਦ ਵਿੱਚ ਆਉਣ ਦੇ ਇਕ ਸਾਲ ਬਾਅਦ ਹੀ ਇਹ ਵੈਬਸਾਈਟ ਇਤਨੀ ਪਾਪੂਲਰ ਹੋ ਗਈ ਕਿ ਅੱਜ ਇਸ ਵੈਬਸਾਈਟ ਦੇ ਜਰੀਏ 85 ਕਰੋੜ ਤੋਂ ਜਿਆਦਾ ਲੋਕ ਜੁੜੇ ਹੋਏ ਹਨ ।

ਕੁਝ ਦਿਨ ਪਹਿਲਾ ਅਸੀ ਹਿਸਟਰੀ ਚੈਨਲ ਤੇ ਇਕ ਡਾਕੂਮੈਂਟਰੀ ਦੇਖ ਰਹੇ ਸੀ । ਜਿਸਦਾ ਨਾਮ ਸੀ ਫੇਸ ਬਿਹਾਈਂਡ ਦਾ ਫੇਸਬੁੱਕ । ਇਸ ਵਿੱਚ ਉਸ ਨੌਜੁਆਨ ਮਾਰਕ ਜੁਕਰਬਰਗ ਦੇ ਬਾਰੇ ਕਾਫੀ ਜਾਣਕਾਰੀ ਦਿਖਾਈ ਗਈ । ਜਿਸ ਨੁੰ ਇਸ ਪੇਜ ਜਰੀਏ ਆਪ ਸਭ ਦੇ ਸਨਮੁੱਖ ਕਰ ਰਹੇ ਹਾਂ ਇਹ ਸਾਡੇ ਲਈ ਕਾਫੀ ਰੌਚਕ ਗੱਲ ਸੀ ਕਿ ਮਾਰਕ ਦੁਨੀਆਂ ਦਾ 35 ਵਾਂ ਸਭ ਤੋਂ ਅਮੀਰ ਇਨਸਾਨ ਜੋ ਕਿ ਫੇਸਬੁੱਕ ਦਾ ਮਾਲਕ ਹੈ ਤੇ 1500 ਕਰੋੜ ਡਾਲਰ ਦੀ ਨਿੱਜੀ ਸੰਪੰਤੀ ਦਾ ਮਾਲਕ ਹੈ , ਅਮਰੀਕਾ ਦੇ ਬਿਲਕੁਲ ਹੀ ਇਕ ਸਾਧਾਰਨ ਤੇ ਛੋਟੇ ਜਿਹੇ ਸਹਿਰ ਸਾਓ ਅੋਲਟੋ ਵਿੱਚ ਬਹੁਤ ਹੀ ਸਾਧਾਰਨ ਜਿੰਦਗੀ ਜਿਊਂਦਾ ਹੈ ।

ਉਸ ਨੂੰ ਦੇਖ ਕੇ ਕੋਈ ਕਹਿ ਹੀ ਨਹੀਂ ਸਕਦਾ ਕਿ ਫੇਸਬੁੱਕ ਦਾ ਮਾਲਕ ਤੇ ਇਤਨਾ ਅਮੀਰ ਇਨਸਾਨ ਇਤਨੀ ਸਾਧਾਰਨ ਜਿੰਦਗੀ ਜੀ ਰਿਹਾ ਹੈ । 2003 ਤੋਂ ਅੱਜ ਤੱਕ ਉਸਦੀ ਜਿੰਦਗੀ ਵਿੱਚ ਕੋਈ ਫਰਕ ਨਹੀਂ ਆਇਆ ਹੈ ਤੇ ਉਹ ਹੁਣ ਵੀ ਕੰਪਿਊਟਰ ਕੰਪਨੀ ਵਿੱਚ ਆਪਣੇ ਕਾਮਿਆਂ ਨਾਲ 16-16 ਘੰਟੇ ਕੰਮ ਕਰ ਰਿਹਾ ਹੈ । ਉਸਦਾ ਮੀਡੀਆ ਨਾਲ ਕੋਈ ਲੈਣਾ ਦੇਣਾ ਨਹੀਂ ਤੇ ਨਾਂ ਹੀ ਉਹ ਕੋਈ ਇੰਟਰਵਿਊ ਵਗੈਰਾ ਕਿਸੇ ਨੂੰ ਦੇਂਦਾ ਹੈ । ਹੁਣ ਤੱਕ ਸਿਰਫ ਉਸਨੇ ਅਮਰੀਕਾ ਦੇ ਮੀਡੀਆ ਨੂੰ 2003 ਤੋਂ ਸਿਰਫ ਤਿੰਨ ਇੰਟਰਵਿਊ ਹੀ ਦਿੱਤੀਆਂ ਹਨ । ਬਿਲਕੁਲ ਹੀ ਸਾਧਾਰਨ ਜਿਹੇ ਕੱਪੜੇ ਪਾਈ ਇਹ ਇਨਸਾਨ ਮਾਰਕ ਜੁਕਰਬਰਗ ਬਿਲਕੁਲ ਹੀ ਆਮ ਇਨਸਾਨਾਂ ਦੀ ਭੀੜ ਵਿੱਚ ਅਰਬਾਂ ਪਤੀ ਲੱਗਦਾ ਹੀ ਨਹੀਂ ।

ਉਸਦੀ ਆਪਣੀ ਸਾਰੀ ਨਿਜੀ ਜਾਇਦਾਦ ਵੀ ਫੇਸਬੁੱਕ ਦੇ ਵਿੱਚ ਹੀ ਲੱਗੀ ਹੋਈ ਹੈ ਤੇ ਅੱਜ ਦੀ ਤਾਰੀਕ ਵਿੱਚ ਫੇਸਬੁੱਕ ਦੀ ਸੇਅਰ ਮਾਰਕਿਟ ਵਿੱਚ ਕੀਮਤ 1000 ਕਰੋੜ ਡਾਲਰ ਹੈ ਤੇ ਇਸਦਾ ਸਾਲਾਨਾ ਕਾਰੋਬਾਰ ਐਡਵਰਟਾਈਸਮੈਂਟ ਦੇ ਬਿਜਨਸ ਤੋਂ ਕਈ ਬਿਲੀਅਨ ਡਾਲਰ ਸਾਲਾਨਾ ਹੈ ।

ਇਸ ਕੰਪਨੀ ਦਾ ਹੈਡਕੁਆਰਟਰ ਬਹੁਤ ਹੀ ਸਾਧਾਰਨ ਜਿਹੇ ਸਹਿਰ ਜੋ ਸਿਲੀਕੋਨ ਵੈਲੀ ਦੇ ਨੇੜੇ ਹੀ ਹੈ ਵਿੱਚ ਹੈ ਤੇ ਇਸ ਦੇ 3000 ਦੇ ਕਰੀਬ ਕਰਮਚਾਰੀ ਹਨ ।

ਮਾਰਕ ਜੁਕਰਬਰਗ ਆਪ ਵੀ ਤਨਖਾਹ ਤੇ ਹੀ ਕੰਮ ਕਰਦਾ ਹੈ । ਡਾਕੂਮੈਂਟਰੀ ਵਿੱਚ ਦਿਖਾਇਆ ਜਾ ਰਿਹਾ ਸੀ ਜੋ ਕਿ ਗੁਪਤ ਤਰੀਕੇ ਨਾਲ ਸੂਟ ਕੀਤੀ ਗਈ ਸੀ , ਕਿ ਮਾਰਕ ਜੁਕਰਬਰਗ ਬਿਲਕੁਲ ਹੀ ਸਾਧਾਰਨ ਜਿਹੀ ਦੁਕਾਨ ਤੋਂ ਦੁਪਹਿਰ ਦਾ ਲੰਚ ਕਰ ਰਿਹਾ ਸੀ ਤੇ ਆਪਣੇ ਕੁਝ ਖਾਸ ਦੌਸਤਾਂ ਨਾਲ ਬਿਲਕੁਲ ਹੀ ਪੈਦਲ ਜਾ ਰਿਹਾ ਸੀ । ਡਾਕੂਮੈਂਟਰੀ ਦੇ ਅਨੂਸਾਰ ਉਸ ਕੋਲ ਕਾਰ ਵੀ 6 ਸਾਲ ਪੁਰਾਣੀ ਸੀ । ਇਹ ਸੋਚ ਕੇ ਕਾਫੀ ਹੈਰਾਨੀ ਹੁੰਦੀ ਹੈ ਕਿ ਕੋਈ ਇਤਨਾ ਅਮੀਰ ਆਦਮੀ ਜੋ ਕਿਸੇ ਅਜਿਹੀ ਚੀਜ ਦਾ ਮਾਲਕ ਹੈ ਜਿਸਨੇ ਪੂਰੀ ਦੁਨੀਆ ਆਪਣੀ ਵੈਬਸਾਈਟ ਦੇ ਜਰੀਏ ਬਦਲ ਦਿੱਤੀ , ਬਿਲਕੁਲ ਹੀ ਸਾਧਾਰਨ ਤੇ ਆਮ ਇਨਸਾਨ ਵਾਂਗ ਰਹਿਣ ਨੂੰ ਪਹਿਲ ਦਿੰਦਾ ਹੈ ।

ਨਹੀਂ ਤਾਂ ਅੱਜ ਕੱਲ ਕੋਈ ਲੱਖ ਪਤੀ ਵੀ ਬਣ ਜਾਵੇ , ਮੀਡੀਆ ਤੇ ਹੋਰ ਪਾਸੇ ਆਪਣੀ ਸੋਹਰਤ ਨੂੰ ਦਿਖਾਉਣ ਵਿੱਚ ਕੋਈ ਕਸਰ ਨਹੀਂ ਰਹਿਣ ਦਿੰਦਾ । ਸਭ ਤੋ ਉਲਟ ਮਾਰਕ ਜੁਕਰਬਰਗ ਵਾਕਿਆ ਹੀ ਇਕ ਸੱਚਾ ਅਮੀਰ ਤੇ ਮਹਾਨ ਇਨਸਾਨ ਹੈ ..

16/06/2012

First commercial products

In the decade from the late 1880s, dozens of designs and machines emerged, particularly in France, Germany and England, and soon spread to America. During this early period of motorcycle history, there were many manufacturers since bicycle makers were adapting their designs for the new internal combustion engine.

In 1894, the Hildebrand & Wolfmüller became the first motorcycle available to the public for purchase. However, only a few hundred examples of this motorcycle were ever built. Soon, as the engines became more powerful and designs outgrew the bicycle origins, the number of motorcycle-oriented producers increased.

The first known motorcycle in the United States was said to be brought to New York by a French circus performer, in 1895. It weighed about 200 lb (91 kg) and was capable of 40 mph (64 km/h) on a level surface. However, that same year, an inventor from the United States E.J. Pennington demonstrated a motorcycle of his own design in Milwaukee. Pennington claimed his machine was capable of a speed of 58 mph (93 km/h), and is credited with inventing the term "motor cycle" to describe his machine.

15/06/2012

The Hubble Space Telescope is a large telescope in space. It was launched by NASA in 1990. Hubble is the length of a large school bus. It weighs as much as two adult elephants. Hubble travels around Earth at about 5 miles per second.

Hubble faces toward space. It takes pictures of planets, stars and galaxies. Hubble has seen the birth and death of stars. It has seen galaxies that are billions of light years away. Hubble has also seen comet pieces crash into the atmosphere above Jupiter.



What Makes Hubble Different From Telescopes on Earth?

The atmosphere above Earth changes and blocks some of the light that comes from space. Hubble orbits high enough above Earth to avoid this problem. Hubble sees space better than telescopes on Earth.



Where Did the Name Hubble Come From?

Hubble is named after an astronomer. His name was Edwin P. Hubble. An astronomer is someone who studies the planets, stars and space. Edwin P. Hubble made important discoveries in the early 1900s. He found many galaxies in the universe. His work also led to the idea that the universe was getting bigger, as if from a big explosion. Scientists call this explosion the big bang. The explosion would have happened billions of years ago.



What Are Hubble's Most Important Discoveries?

Hubble pictures have helped scientists guess the age and size of the universe. Scientists think the universe is about 13 or 14 billion years old. Hubble has also helped scientists understand how planets and galaxies form.

Hubble has spotted black holes. Black holes suck in everything around them, including light. Hubble has also helped to discover dark energy. Dark energy is a strange force that causes the universe to expand faster and faster as time goes on. And Hubble has helped scientists learn more about explosions that occur when huge stars die.



What Is Servicing Mission 4?

Servicing Mission 4 is the name of the space shuttle mission to repair the Hubble telescope. This will be the fifth time astronauts have visited Hubble. During this mission, astronauts will put two new instruments on Hubble. They will also fix two broken instruments. Scientists hope this work will keep Hubble running for at least five more years.



Where Do the Colors in Hubble Pictures Come From?

Hubble pictures start out as shades of black and white. Colors are then added to the pictures. Colors can help show how an object might look to the human eye. Colors can also be used to point out an important detail in the picture. Or they can help to show details that the human eye wouldn't see.

15/06/2012

The history of the modern computer begins with two separate technologies, automated calculation and programmability, but no single device can be identified as the earliest computer, partly because of the inconsistent application of that term. A few devices are worth mentioning though, like some mechanical aids to computing, which were very successful and survived for centuries until the advent of the electronic calculator, like the Sumerian abacus, designed around 2500 BC of which a descendant won a speed competition against a modern desk calculating machine in Japan in 1946, the slide rules, invented in the 1620s, which were carried on five Apollo space missions, including to the moon and arguably the astrolabe and the Antikythera mechanism, an ancient astronomical computer built by the Greeks around 80 BC. The Greek mathematician Hero of Alexandria (c. 10–70 AD) built a mechanical theater which performed a play lasting 10 minutes and was operated by a complex system of ropes and drums that might be considered to be a means of deciding which parts of the mechanism performed which actions and when. This is the essence of programmability.

Around the end of the 10th century, the French monk Gerbert d'Aurillac brought back from Spain the drawings of a machine invented by the Moors that answered either Yes or No to the questions it was asked. Again in the 13th century, the monks Albertus Magnus and Roger Bacon built talking androids without any further development (Albertus Magnus complained that he had wasted forty years of his life when Thomas Aquinas, terrified by his machine, destroyed it).

In 1642, the Renaissance saw the invention of the mechanical calculator, a device that could perform all four arithmetic operations without relying on human intelligence. The mechanical calculator was at the root of the development of computers in two separate ways. Initially, it was in trying to develop more powerful and more flexible calculators that the computer was first theorized by Charles Babbage and then developed. Secondly, development of a low-cost electronic calculator, successor to the mechanical calculator, resulted in the development by Intel of the first commercially available microprocessor integrated circuit.

14/06/2012

A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 299792.458 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,454,254,955,488 kilometers.

Why would you want such a big unit of distance? Well, on Earth, a kilometer may be just fine. It is a few hundred kilometers from New York City to Washington, DC; it is a few thousand kilometers from California to Maine. In the universe, the kilometer is just too small to be useful. For example, the distance to the next nearest big galaxy, the Andromeda Galaxy, is 21 quintillion km. That's 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance.

In our solar system, we tend to describe distances in terms of the Astronomical Unit (AU). The AU is defined as the average distance between the Earth and the Sun. It is approximately 150 million km (93 million miles). Mercury can be said to be about 1/3 of an AU from the Sun and Pluto averages about 40 AU from the Sun. The AU, however, is not big enough of a unit when we start talking about distances to objects outside our solar system.

For distances to other parts of the Milky Way Galaxy (or even further), astronomers use units of the light-year or the parsec . The light-year we have already defined. The parsec is equal to 3.3 light-years. Using the light-year, we can say that :

The Crab supernova remnant is about 4,000 light-years away.

The Milky Way Galaxy is about 150,000 light-years across.

The Andromeda Galaxy is 2.3 million light-years away.




light speed in meter = 299 792 458 m / s

light speed in km = 299 792 458 / 1000 = 299792.458 km/s

light travel in one hour = 299792.458 X 3600 sec = 1079252848.8 km

light travel in one day or 24 hour = 1079252848.8 X 24 = 25902068371.2 km

light travel in one year = 25902068371.2 X 365 = 9,454,254,955,488 kilometer


ONE LIGHT YEAR = 9,454,254,955,488 kilometer

13/06/2012

A supernova is the explosive death of a star, which unleashes a burst of light through the cosmos. Supernovas happen in two different ways:

When massive stars run out of fresh nuclear fuel, there is no more pressure to sustain them against their own weight. The central part of such a star then collapses. The outer layers of the star fall in on the core and then rebound in a tremendous explosion.
Matter piling up on the compressed core of an already-dead star, known as a white dwarf, can reach sufficient density to trigger a thermonuclear explosion.

These violent deaths occur about once a century in a typical spiral galaxy like our Milky Way. Every 200-300 years we discover a supernova that happens to be bright and close enough to be visible to the unaided eye. The last supernova seen in our galaxy was discovered in 1604. When visible to the eye they appear in the sky as a "new" (Latin: "nova") star. A supernova observed in the "nearby" Large Magellanic Cloud (an irregular galaxy outside of our Milky Way galaxy) in 1987 was the first one visible to the unaided eye since 1604. The Hubble Space Telescope (HST) was not yet in orbit when the explosion was observed, but HST has made dramatic observations of the expanding gaseous remains of that star. Although supernovas are rare in our galaxy, there are many galaxies, and HST has observed stellar explosions elsewhere in the universe.

Supernovas blaze so brightly that they can be seen at distances of up to 10 billion light years. Light from these distant supernovas can tell us how the behavior of the universe has changed during the several billion years of the light’s journey to Earth.

13/06/2012

The sun is a massive fusion engine, which gives off its heat by radiating it into space. We call the fusion processes stellar nucleosynthesis. The nuclear fusion reactions produce zillions of watts of heat. It's about 383 billion billion megawatts, which is 3.83×1026 W, and it does that every second. That's a lot of energy.

Read more: http://wiki.answers.com/Q/Why_is_the_Sun_so_hot

12/06/2012

11/06/2012

no piece of paper can be folded in half more than 7 times

09/06/2012

The pleasant feeling of eating chocolate is caused by a chemical called ANADAMIDE , a neurotransmitter that also produced naturally in the brain

09/06/2012

The electric eel (Electrophorus electricus), which is found in South American tropical regions, has the ability to produce powerful electric charges. The low intensity charges emitted by the eel range from 5 to 10 V. The higher intensity charges vary by the size of the eel. Smaller eels (about 10 cm in length) can produce charges of up to 100 V. Larger eels (over 1 m in length) can produce charges of 450 to 650 volts of electricity

The electric eel is one of the few animals on the planet that can make, store, and discharge electricity.