who knws the history of a pulley.who invented it ,place of discovery?
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Most people believe that Archimedes invented the pulley.
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Michael Farady of England created electricity through magnets. And people before him knew about electricity for long time, so its difficult to answer who invented it.
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Carl Friedrich Gauss (30 April 1777 – 23 February 1855) was a German mathematician and scientist of profound genius who contributed significantly to many fields, including number theory, analysis, differential geometry, geodesy, magnetism, astronomy and optics. Sometimes known as "the prince of mathematicians", Gauss had a remarkable influence in many fields of mathematics and science and is ranked beside Euler, Newton and Archimedes as one of history's greatest mathematicians.
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Issac Newton\n\nGallileo however proved that gravitational 'time to fall'was the same for 2 objects of different weights. Gallileo died 11 months before Newton's birth. There work was very complimentary. Newton established the gravitational constant that both backs up Gallileo and demonstrated that it is also gravity that causes the planets to orbit the Sun. The apple under the tree is a bit of a myth!
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http://www.mechatronic.org\n\nread some books also
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Ok first of all know about the term :Machanical advantage.\nMechanical advantage of a pulley is equal to the number of supporting ropes.\n   As per your description yours is a single fixed pulley.\n\n   A fixed pulley is a pulley in which the wheel does not move. Fixed pulleys change the direction of the effort force. It does not increase the size of the effort force. The effort force is equal to the resistance force in a fixed pulley; therefore, the mechanical advantage (MA) of a fixed pulley is equal to 1.\n\n       But the actual defination of mechanical advantage is as follows:it is th ratio of  \nF(out) = force exerted on the load by the machine and \nF(in) = force you exert on the machine\n\nHere the load is 950N and the friction is 0.Thus by the above formulae:\n\nMA=F(out)/F(in)\nor\nMA=Load/Effort\n1=load/effort\nBut load=950N\n1=950/effort\neffort * 1=950N       <By cross mul>\neffort=950N           <Answer>
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i suppose it depends on what you are looking for as a definition of computer.\n\nYou could say the abacus.\nOr if you're looking for something programmable then in 1801 Joseph Jacquard developed a weaving loom whose weaving process was based on holes punched in a card.\nHerman Hollerith used a hole punch card to speed up census tabulation for the 1890 US census - which led to the creation of IBM\n\nBut these wer all based on inventions that used gears to represent data invented by Blaise Pascal (1623-1662)  Gottfried Leibniz (1646-1716) and Charles Babbage (1792-1871)\n\nAugusta Ada Byron, Countess of Lovelace is accredited as being the first programmer in regards to charles babbage's analytical engine during the mid to late 1830's.\n\nHope this information helps
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Johannes Gensfleisch zur Laden zum Gutenberg (c. 1398 – c. February 3, 1468) was a German metal-worker and inventor who achieved fame for his contributions to the technology of printing during 1447, including a type metal alloy and oil-based inks, a mould for casting type accurately, and a new kind of printing press based on presses used in wine-making. The exact origin of Gutenberg’s first presses is apparently unknown, and several authors cite his earliest presses as adaptations of heavier binding presses which were already in use. Tradition credits him with inventing movable type in Europe — an improvement on the block printing already in use there. By combining these elements into a production system, he allowed for the rapid printing of written materials, and an information explosion in Renaissance Europe. Yet, it must be noted that an iron printing press was first invented by Korea's Goryeo dynasty in 1234, 216 years ahead of Gutenberg's feat in 1450.
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Heres a great page on the history and creation of the elevator:\n\nhttp://inventors.about.com/library/inventors/blelevator.htm
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Lewis Waterman in 1884\nhttp://inventors.about.com/library/weekly/aa100897.htm
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you probably need history of electricity. lte me give you a brief one.\nFrom the writings of Thales of Miletus it appears that Westerners knew as long ago as 600 B.C. that amber becomes charged by rubbing. There was little real progress until the English scientist William Gilbert in 1600 described the electrification of many substances and coined the term electricity from the Greek word for amber. As a result, Gilbert is called the father of modern electricity. In 1660 Otto von Guericke invented a crude machine for producing static electricity. It was a ball of sulfur, rotated by a crank with one hand and rubbed with the other. Successors, such as Francis Hauksbee, made improvements that provided experimenters with a ready source of static electricity. Today's highly developed descendant of these early machines is the Van de Graaf generator, which is sometimes used as a particle accelerator. Robert Boyle realized that attraction and repulsion were mutual and that electric force was transmitted through a vacuum (c.1675). Stephen Gray distinguished between conductors and nonconductors (1729). C. F. Du Fay recognized two kinds of electricity, which Benjamin Franklin and Ebenezer Kinnersley of Philadelphia later named positive and negative.\n\nThe Leyden Jar and the Quantitative Era\n\nProgress quickened after the Leyden jar was invented in 1745 by Pieter van Musschenbroek. The Leyden jar stored static electricity, which could be discharged all at once. In 1747 William Watson discharged a Leyden jar through a circuit, and comprehension of the current and circuit started a new field of experimentation. Henry Cavendish, by measuring the conductivity of materials (he compared the simultaneous shocks he received by discharging Leyden jars through the materials), and Charles A. Coulomb, by expressing mathematically the attraction of electrified bodies, began the quantitative study of electricity.\n\nA new interest in current began with the invention of the battery. Luigi Galvani had noticed (1786) that a discharge of static electricity made a frog's leg jerk. Consequent experimentation produced what was a simple electron cell using the fluids of the leg as an electrolyte and the muscle as a circuit and indicator. Galvani thought the leg supplied electricity, but Alessandro Volta thought otherwise, and he built the voltaic pile, an early type of battery, as proof. Continuous current from batteries smoothed the way for the discovery of G. S. Ohm's law (pub. 1827), relating current, voltage (electromotelinks" href="/encyclopedia/O/Ohmslaw.html">Ohm's law), and of J. P. Joule's law of electrical heating (pub. 1841). Ohm's law and the rules discovered later by G. R. Kirchhoff regarding the sum of the currents and the sum of the voltages in a circuit (see Kirchhoff's laws) are the basic means of making circuit calculations\nyou do need advanced studying in this but i think this will help u anywhere. best of luck!!
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Stanley William Stanley, inventor of the induction coil, or what is known today as a transformer, was born on November 28, 1858 in Brooklyn.
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The two simplest pulley systems demonstrate the principles of their operation.  First if there is a single pulley overhead and you pull down to lift a load, you must pull with the same force as the weight of the load because oonly one rope pulls up on the load.  100 pound load = 100 pound pull.\n\nSecond, if the load is below you and you pull up on a rope connected to your own level through a pulley, you pull with a force one half the weight of the load because two ropes are pulling now up on the load.  100 pound load = 50 pounds pull + 50 pounds on fixed rope.\n\nThe overhead pulley required you to pull the rope say 10 feet to lift the load 10 feet; but the pulley below you required you to pull the rope 20 feet to lift the load 10 feet.\n\nYou can calculate more complicated pulley systems either by counting the number of ropes that are under tension that actually lift the load and dividing the load by that number or you can determine the length of rope you must pull to raise the load a given distance and use that ratio to determine your force vs the load weight.  you can do this by making sketches rather than actually setting up real pulleys, ropes and loads.  Good luck.
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the firts paper making machine was made in 1803 , but it was susefully applied to printing at 1810 in germany by friedrich koeining. and finaly the power press was invented by american issac addams 1827
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This sounds like a homework assignment, so I am not going to put it in the format you requested.\n\nYes, the concept of work does explain all of that. Without pulleys, levers, and wedges, we would have to lift 2 ton metal pieces without the use of cranes. You would be so surprised on how many things depend on pulleys, levers, and wedges.\n\nJ.N.S
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Philo T. Farnsworth \nhttp://www.ideafinder.com/history/inventors/farnsworth.htm
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I couldn't find the exact creator, as it's been around a long time.\n\n"Machine tool that performs turning operations in which unwanted material is removed from a workpiece rotated against a cutting tool. \n\nThe lathe is one of the oldest and most important machine tools. Wood lathes were in use in France as early as 1569. During the Industrial Revolution in England the machine was adapted for metal cutting."\n\nCheck out this site for people credited with improving the lathe.\nhttp://www.britannica.com/search?query=lathe&ct=&searchSubmit.x=15&searchSubmit.y=14