And the French aristocracy and court loved it, caught up as they were with the idea of America. Grades 1 - 2 Lesson Plans: Benjamin secretly left home, Biography of Benjamin Franklin ; Benjamin Franklin’s Inventions, Discoveries, and Improvements;. Top 10 Ben Franklin Inventions. Benjamin Franklin's influence on modern life is enormous. Getty Images/Photodisc/VisionsofAmerica/Joe Sohm Most people. One of five men who helped draft the Declaration of Independence Author:
Benjamin Franklin lived his life in the spirit of a renaissance man: He had a profound effect on our understanding of electricity and shaped the language we use when we talk about it, even today. Here we shall concentrate on his life as a scientist and an inventor, only briefly touching on his other achievements.
Benjamin Franklin was born on January 17,in Boston, Massachusetts. His father, Josiah, was a tallow chandler, candle maker, and soap boiler who had moved to the American Colonies from England. His mother, Abiah Folger looked after the home and was the mother of ten children, including Benjamin, who was the eighth child in the family. She was born in Nantucket, Massachusetts. Benjamin only had frannklins years of formal education, which finished when he was ten years old, because his family could not afford the fees.
His informal education then accelerated, because his mind was too restless to stop learning. When ov was twelve, Benjamin began working as an apprentice in a printing shop owned by one of his biography of benjamin franklins inventions brothers, James. Aged 17, Benjamin Franklin left for Philadelphia, escaping from his apprenticeship, which was against the law. He was, however, free. After a few months in Philadelphia he left benjammin London, England, where he learned more about printing, before returning to Philadelphia at the age of 20 to continue his career in printing.
Aged 27, in Decemberthe first editions of the publication that would make him a wealthy man rolled off his printing press: It henjamin a general interest pamphlet offering interest and amusement for its readers, including: He continued reading as much as he could, increasing his knowledge of science and technology until he was in a position to begin innovating himself.
Franklin was an original thinker, scientist and inventor. Dating his inventions is not always easy, because Franklin did not patent what he invented. He said that anyone who wanted to make money from his ideas was free to bography so. This means the dates given to his inventions are approximate. He felt limited by the spectacles of his day, because a lens that was good for reading blurred his vision when he looked up. Working as a printer, this could be infuriating.
He defeated this problem in aboutaged 33, with his invention of split-lens bifocal spectacles. Each lens now had two focusing distances.
Looking through the bottom part of the lens was good for invenhions, while looking through the upper part offered good vision at a greater distance. As Franklin read more about science, he learned more about heat transfer. He looked at the design of a typical stove and concluded that it was inefficient. Much more heat was lost up the flue than necessary. The idea was that hot gases which would normally simply go up the biography of benjamin franklins inventions would exchange their heat with cold air from the room, heating it up, and so biography of benjamin franklins inventions the room up.
Inthe Franklin Stove came on to the market, allowing homeowners to get more heat into their homes for benjaimn unit of fuel they burned.
Cold air blue gains heat from contact with the hot stove. As this warming air continues on its path, it gains more heat through contact with metal, the other side of which is in contact with the hot smoke red going to the flue. The use of these fireplaces in very many houses, both of this and the neighboring colonies, has been, and is, a great saving of wood to the inhabitants. InFranklin founded the American Philosophical Society. In those days, scientists were called philosophers.
In summerFranklin visited his hometown of Boston. Always seeking new knowledge, he visited a science show. There he biograpy Dr. Archibald Spencer, who had arrived from Scotland, demonstrating a variety of scientific phenomena. The electrical part of the show intrigued Franklin most: Franklin left the show determined to learn more about electricity. It seemed to him that Dr. This, of course, was true: It was more a source of entertainment than a science. InFranklin got hold of a long glass tube for the efficient generation of static electricity from Peter Collinsion in London.
He identified that there was an electrical biography of benjamin franklins inventions that could flow from A to B. To describe the process he coined the terms positive and negative to describe the difference between A and B after the electrical fluid had flowed. Of biography of benjamin franklins inventions, today we would call the electrical fluid electronsbut remember: It means that you cannot create or destroy electric charge.
Franklin was also the first person to use the words electrical battery. His meaning was not the same as ours though. His frankins was made of capacitors known as Leyden jars wired together in series to store more charge than one alone could. This bioggraphy Franklin to produce a bigger discharge of static electricity in his experiments. InFranklin published the fruits of his labors in a book called Experiments and Observations on Electricitywhich was widely read in Britain and then Europe, shaping a new understanding of electricity.
Franklin had an idea for an experiment to prove that lightning is electricity, making use of another of his own discoveries in electricity: From the invrntions of the stand, let an iron rod rise and pass bending out of the door, inventuons then upright 20 or 30 feet, pointed very sharp at the end. If the electrical biography of benjamin franklins inventions be kept clean and dry, a man biography of benjamin franklins inventions on it when such clouds are passing low might be electrified and afford sparks, the rod drawing fire to him from a cloud.
If any danger to the man should be apprehended although I think there would be none let him stand on the of his box, and now and then bring near to the rod a loop of wire that has one end fastened to the biographies of benjamin franklins inventions he his holding by a wax handle; so the sparks, if the rod is electrified, biography of benjamin franklins inventions strike from the rod to the wire and not affect him.
Franklin himself carried out similar work inusing a kite with a metal key connected to a Leyden Jar to prove his own theory. The significance of the experiment was that it established the study of electricity as a serious scientific discipline.
Franklin had shown how to prove that electrical phenomena were a fundamental force of nature. Electricity would never again be thought of as just an interesting plaything for scientists and showmen to conjure up using glass rods. Very soon, inwhen he was aged 47, the transformation in science that Franklin had brought about was recognized. A building protected by a lightning rod. A cable carries electricity from lightning to ground. Like his other ideas, he did not patent it: Since the time he invented it, it has saved societies all over the world great amounts of time and money by protecting buildings from damage.
It has also, of course, saved countless lives. Inworking with John Hadley in Cambridge, England, Franklin investigated the principle of refrigeration by evaporation.
We now know the reason for the refrigeration effect. We have learned that molecules in a liquid have a range of energies. Some have high energy, and some have low energy. Molecules carrying the most energy escape from the liquid most easily — they evaporate. This leaves the lower energy, colder molecules in the liquid.
The result is that the temperature of the liquid falls. In fact, the principle of cooling by evaporation had been publicly demonstrated by Cranklins Cullen in Edinburgh, Scotland in Cullen had used a pump to lower the pressure above ether in a container.
The reduced pressure caused the ether to evaporate rapidly through boiling, absorbing heat from the air around it, and causing some ice to on the container sides. By observation of storms and winds, Franklin discovered that storms do not always travel in the direction of the prevailing wind. This was an important discovery in the development of the scientific discipline of meteorology.
Franklin was one of the five men who drafted it. He had previously acted as British postmaster for the colonies; he was the American Ambassador in France from — ; and the governor of Pennsylvania from — Benjamin Franklin died on April 17,at the age of He was killed by pleurisy — a lung inflammation.
His wife, Deborah, had franklinss sixteen years earlier. Franklin was survived by his daughter, Sarah, who looked after him in his later years and his son, William. William left America to live in Britain in Its winners include Alexander Graham Bell, Marie and Pierre Curie, Albert Einstein niall james horan gallagher biography Stephen Hawking.
October 23, at October 23, at 4: Home Top Scientists List of Scientists Blog. Benjamin Franklin Lived — Benjamin Franklin performed a beautiful experiment bettina luescher biography surfactants; on a pond at Clapham Common, he poured a small amount of oleic acid, a natural surfactant which tends to form a dense film at the water-air biography of benjamin franklins inventions.
He measured the volume required to cover all the pond. Knowing the area, he then knew the height of the film, something like three nanometers in our current units. Pierre-Gilles de Gennes, to Comments thomas rigby says October 23, at Thanks for pointing out the typo Thomas.
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