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Sunday, October 2, 2011

THE HISTORY OF AUTOMOBILES.



  1. Old Engraving depicting the 1771 crash of Nicolas Joseph Cugnot's steam powered carModel A Ford Circa 1930Plymouth Automobile 1939

  2. By definition an automobile or car is a wheeled vehicle that carries its own motor and transports passengers. The automobile as we know it was not invented in a single day by a single inventor. The history of the automobile reflects an evolution that took place worldwide.n 
  3. It is estimated that over 100,000 patents created the modern automobile. You can point to the many firsts that occurred along the way to producing the modern car; and with that goal in mind, highlighted below are articles, biographies, timelines, and photo galleries related to the history of the automobile and its many inventors.
  4. A multi-part feature on the history of automobiles starting with the first steam, electrical, and gasoline-engine cars. Learn the controversy behind what was the first car in history and the importance of the internal combustion engine. The lives of many famous automotive makers are explored in detail with special pages on the assembly line, the origins of the name automobile, the patent disputes, and more.
  5. The History of the Automobile
    Early Steam Powered Cars
    Old Engraving depicting the 1771 crash of Nicolas Joseph Cugnot's steam powered carOld Engraving depicting the 1771 crash of Nicolas Joseph Cugnot's steam-powered car into a stone wall.


    By Mary Bellis
    The automobile as we know it was not invented in a single day by a single inventor. The history of the automobile reflects an evolution that took place worldwide. It is estimated that over 100,000 patents created the modern automobile. However, we can point to the many firsts that occurred along the way. Starting with the first theoretical plans for a motor vehicle that had been drawn up by bothLeonardo da Vinci and Isaac Newton.
    In 1769, the very first self-propelled road vehicle was a military tractor invented by French engineer and mechanic, Nicolas Joseph Cugnot (1725 - 1804). Cugnot used a steam engine to power his vehicle, built under his instructions at the Paris Arsenal by mechanic Brezin. It was used by the French Army to haul artillery at a whopping speed of 2 1/2 mph on only three wheels. The vehicle had to stop every ten to fifteen minutes to build up steam power. The steam engine and boiler were separate from the rest of the vehicle and placed in the front (see engraving above). The following year (1770), Cugnot built a steam-powered tricycle that carried four passengers.

    n 1771, Cugnot drove one of his road vehicles into a stone wall, making Cugnot the first person to get into a motor vehicle accident. This was the beginning of bad luck for the inventor. After one of Cugnot's patrons died and the other was exiled, the money for Cugnot's road vehicle experiments ended.
    Steam engines powered cars by burning fuel that heated water in a boiler, creating steam that expanded and pushed pistons that turned the crankshaft, which then turned the wheels. During the early history of self-propelled vehicles - both road andrailroad vehicles were being developed with steam engines. (Cugnot also designed two steam locomotives with engines that never worked well.) Steam engines added so much weight to a vehicle that they proved a poor design for road vehicles; however, steam engines were very successfully used in locomotives. Historians, who accept that early steam-powered road vehicles were automobiles, feel that Nicolas Cugnot was the inventor of the first automobile.
    After Cugnot Several Other Inventors Designed Steam-Powered Road Vehicles
    • Cugnot's vehicle was improved by Frenchman, Onesiphore Pecqueur, who also invented the first differential gear.
    • In 1789, the first U.S. patent for a steam-powered land vehicle was granted to Oliver Evans.


    • In 1801, Richard Trevithick built a road carriage powered by steam - the first in Great Britain.
    • In Britain, from 1820 to 1840, steam-powered stagecoaches were in regular service. These were later banned from public roads and Britain's railroad system developed as a result.
    • Steam-driven road tractors (built by Charles Deitz) pulled passenger carriages around Paris and Bordeaux up to 1850.
    • In the United States, numerous steam coaches were built from 1860 to 1880. Inventors included: Harrison Dyer, Joseph Dixon, Rufus Porter, and William T. James.
    • Amedee Bollee Sr. built advanced steam cars from 1873 to 1883. The "La Mancelle" built in 1878, had a front-mounted engine, shaft drive to the differential, chain drive to the rear wheels, steering wheel on a vertical shaft and driver's seat behind the engine. The boiler was carried behind the passenger compartment.
    • In 1871, Dr. J. W. Carhart, professor of physics at Wisconsin State University, and the J. I. Case Company built a working steam car that won a 200-mile race.
    • The Internal Combustion Engine and Early Gas-Powered Cars
      Jean Joseph Etienne Lenoir's motor car


      The very first self-powered road vehicles were powered by steam engines and by that definition Nicolas Joseph Cugnot of France built the first automobile in 1769 - recognized by the British Royal Automobile Club and the Automobile Club de France as being the first. So why do so many history books say that the automobile was invented by either Gottlieb Daimler or Karl Benz? It is because both Daimler and Benz invented highly successful and practical gasoline-powered vehicles that ushered in the age of modern automobiles. Daimler and Benz invented cars that looked and worked like the cars we use today. However, it is unfair to say that either man invented "the" automobile.
    Early Electric Cars
    Steam engines were not the only engines used in early automobiles. Vehicles with electrical engines were also invented. Between 1832 and 1839 (the exact year is uncertain), Robert Anderson of Scotland invented the first electric carriage. Electric cars used rechargeable batteries that powered a small electric motor. The vehicles were heavy, slow, expensive, and needed to stop for recharging frequently. Both steam and electric road vehicles were abandoned in favor of gas-powered vehicles. Electricity found greater success in tramways and streetcars, where a constant supply of electricity was possible.
    The History of Electric VehiclesLearn more about the history of electrical vehicles from 1890 to the present.
    However, around 1900, electric land vehicles in America outsold all other types of cars. Then in the several years following 1900, sales of electric vehicles took a nosedive as a new type of vehicle came to dominate the consumer market.


Saturday, October 1, 2011

ACCIDENTAL DISCOVERIES


  • ACCIDENTAL DISCOVERIES

    Do you know what the invention of the telephone, the Post-it note and the discovery of Velcro have in common? All were discovered by accident. Usually scientific progress is associated with rigorous research and analysis, but it’s not always the case. A surprising number of discoveries owe a lot to chance.
    • Alexander Fleming’s discovery of penicillin is one example. It took place in 1928 when he left a culture plate smeared with Staphylococcus bacteria on his lab bench while he went on a two-week holiday. He came home to see that the culture had been contaminated by a fungus, which stopped the bacteria growing. He had discovered an antibiotic!

    This was by no means the first accidental discovery. Throughout the centuries, such discoveries have led to some of the world’s greatest breakthroughs in all areas of life. They were particularly numerous in the field of chemistry - take a look at the Xperimania timeline for many examples. Here are just a few more examples of inventions discovered by chance or ”happy accident” - sometimes discovered while scientists were looking for something entirely different!
    • Post-it notes

    • In 1970, a chemist named Spencer Silver was working in the 3M research laboratories trying to develop strong glue. His work resulted instead in an adhesive that wasn’t very sticky. When pulling apart two pieces of paper stuck together with that adhesive, Spencer discovered that the glue stuck either to one paper or the other. That seemed like a pretty useless invention. Four years later a colleague who was singing in the church choir was however hit by a brilliant idea. He used markers to keep his place in the hymn book, but they kept falling out. So he coated them with Spencer’s glue. As if by magic, they stayed in place yet lifted off without damaging the pages. The Post-it note was born. Today, it is one of the most popular office products available.
    • Cellophane


    • The idea of cellophane, the most popular clear plastic wrapper, jumped to the Swiss textile engineer Jacques Brandenberger’s mind when he was seated at a restaurant. After a customer spilled a bottle of wine onto the tablecloth, he went back to his laboratory convinced that he would discover a way to apply a clear film to cloth, making it waterproof. He conducted research with different materials and eventually applied liquid viscose to cloth. The experiment failed as the cloth became too stiff and brittle. Brandenberger however noted that the coating peeled off in a transparent film that might have other applications. By 1908 he developed a machine that could produce transparent viscose sheets which he marketed as cellophane.
      Velro

    The Velcro fastener was invented in 1941 by George de Mestral, a Swiss engineer. The idea came to him after he took a close look at the burrs which kept sticking to his clothes and his dog’s fur when walking in the Alps. He examined the burrs with a microscope and decided to devise a unique fastener that copied the burrs’ microscopic hooks. Although de Mestral first met with resistance and even laughter, he stuck to his idea. By trial and error, he realised that nylon when sewn under infrared light formed tiny but tough hooks, which easily attached themselves to softer, velvety nylon fabric. Did you know that de Mestral named his invention Velcro after the French words velours (meaning velvet) and crochet (hook)?
    Chance is not enough to make such key discoveries. The scientist or inventor must have a prepared and open mind, to detect and understand the importance of the unforeseen incident and to use it constructively. As the French scientist Louis Pasteur famously said: “In the field of observation, chance favours only the prepared mind”. Although he was speaking at the inauguration of the Faculty of Science at the University of Lille in 1854, the quote is still relevant today.
    The demand on scientific research is currently very high as it is key to solve society’s critical problems related to food, health or energy for instance. An unexpected chance event should not be overlooked. Tomorrow’s open and prepared minds must also be fostered. This preparatory work can start at school from a very early age. It is why science education is so crucial in the development of critical, informed and open minds which will deliver tomorrow’s innovations. Do you feel tempted by the challenge? Open your ears and mind, and maybe one day you will also be hit by “Eureka”!

    Friday, September 30, 2011

    Humor..from College life.copie from Malayalam

    GREAT INVENTIONS THAT NEVER BECAME POPULAR!!


    Mr. Edison’s Kindle

    Fifteen amazing gadget ideas that were way, way ahead of their time.
    By   |  Sunday, January 24, 2010 at 11:04 pm

    “The best way to predict the future is to invent it.” So said legendary tech visionary Alan Kay. He was absolutely correct. But he might have added that inventing the future is anything but a cakewalk. Even though everyone who does it has the luxury of learning from predecessors who tried and failed.
    The brightest inventors on the planet keep coming up with ideas that never amount to much–even when they set out to solve real problems, and even when their brainchildren foreshadow later breakthroughs. And professional tech watchers have long proven themselves prone to getting irrationally exuberant about stuff that just isn’t ready for prime time.
    Thanks to Google Books’ archives of Popular Science, Popular Mechanics, LIFE, and other magazines that frequently reported on futuristic gizmos, we have a readily accessible record of technology that failed to live up to the initial hype–including random notions that never got off the drawing board, startlingly advanced products that didn’t find a market, and very rough drafts of concepts that eventually became a big deal. The best of them are fascinating, even when it’s not the least bit surprising that they flopped.
    Herewith, fifteen inventions–not that all of them ever got built–that were at least a decade ahead of their time. They’re in chronological order, starting with the inspiration that gave this article its title.

    1. Thomas Edison’s Metal Books
    As described in: Cosmopolitan, February 1911.
    What it was: Among the numerous brainstorms and predictions that Thomas Alva Edison shared with Cosmopolitan readers in an exclusive interview was his vision of 40,000-page books that would be two inches thick and weigh a pound–because their pages would be made of metal, not paper:
    Even the pages of books may be made of steel, though Edison regards nickel as a better substitute for paper…”Why not?” asks Edison. “Nickel will absorb printer’s ink. A sheet of nickel one twenty-thousandth of an inch thick is cheaper, tougher, and more flexible than an ordinary sheet of book-paper. A nickel book, two inches thick, would contain 40,000 pages. Such a book would weigh only a pound. I can make a pound of nickel sheets for a dollar and a quarter.”
    Here…is a prospect of real culture for the masses Forty thousand pages in a volume! A single volume the equivalent in printing space of two hundred paper-leaved books of two hundred pages each! What a library might be placed between two steel covers and sold for, perhaps, two dollars!
    That’s a lot of exclamation points!
    Flies in the ointment: I feel disrespectful expressing skepticism about an idea pitched by the greatest inventor of all time, but…I’m skeptical that it would have worked. Also, wouldn’t it have been tough to flip ahead to, say, page 17,356?
    When did the basic idea become practical? I know of no evidence that Edison or  anyone else ever printed a single book on nickel. (A Google search for “books printed on nickel” returns one result–a Publisher’s Weekly story referencing the Edison interview.) The first time anyone crammed massive numbers of books into one booklike device that real people could buy may have been when the Rocketbook and Softbook were released in 1999–not that very many people bought either of them.
    Modern counterpart: The Kindle, the Nook, Sony’s Readers, and every other current gadget for reading digital tomes…even though they all cost a lot more than $2. And is it going too far to say that Edison had a 1911 version of the upcoming Apple tablet in mind?

    2. The Automobile Wireless Telephone

    What it was: An brainchild of Los Angeles inventor E.C. Hanson, who successfully made wireless calls over a distance of 35 miles from a phone installed in his roundabout.
    Flies in the ointment: You thought the telescoping antennae on early brick phonesare comically archaic? Hanson’s car phone required that the car in question be outfitted with telephone poles fore and aft, supporting “aerial wires and high-voltage insulators.”
    When did the basic idea become practical? Experimentation with mobile phones continued for decades, but they only started to make sense in 1983 when Motorola shipped its DynaTAC, the first true cell phone–a full seven decades after Hanson’s experiments.
    Modern counterpart: Your iPhone, BlackBerry, Nexus One, or Pre. Or even your humble flip phone.

    3. The Telenewspaper and Electric Writer

    What they were: Items in a “home of the future” depicting the typical house of 2000, designed by architect R.A. Duncan and exhibited in London. Besides the expected flying car in the garage, the place had a high-tech study with:
    …a built-in radio and loud speakers, a built-in television set to see the day’s events and a built-in telenewspaper for visible radio projection of the day’s news. An electric writer, to transmit by radio similar messages, and an elaborate lighting-control panel, were also included.
    That’s as far as the magazine’s explanation goes. If the room already has a TV, I’m assuming that the telenewspaper would have presented news in words and pictures displayed on a screen. The electric writer, meanwhile, appears to involve an in-wall display and some sort of box with buttons. I can’t see any evidence of QWERTY capability–maybe there was a wireless keyboard.
    Flies in the ointment: The illustration in the magazine shows a house dwarfed by a huge honkin’ antenna, looking a bit like the ones at the top of San Francisco’s Twin Peaks. With experimental television broadcasts barely underway, it was awfully premature to be talking about homes with multiple displays built into the walls. Also, shouldn’t the telenewspaper and the electric writer be one device, or at least share one display?
    When did the basic ideas become practical? In the 1980s and 1990s, more and more people began using electric screens to read news and transmit messages, although the screens usually weren’t built into walls and the transmissions used telephone wires rather than radio waves.
    Modern counterparts: Google News and Gmail.