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He was born on March 14, 1879. and invented the atoms. He died in the 1950's.

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Einstein's Early Life (1879-1904)

Born on March 14, 1879, in the southern German city of Ulm, Albert Einstein grew up in a middle-class Jewish family in Munich. As a child, Einstein became fascinated by music (he played the violin), mathematics and science. He dropped out of school in 1894 and moved to Switzerland, where he resumed his schooling and later gained admission to the Swiss Federal Polytechnic Institute in Zurich. In 1896, he renounced his German citizenship, and remained officially stateless before becoming a Swiss citizen in 1901.

Did you know? Almost immediately after Albert Einstein learned of the atomic bomb's use in Japan, he became an advocate for nuclear disarmament. He formed the Emergency Committee of Atomic Scientists and backed Manhattan Project scientist J. Robert Oppenheimer in his opposition to the hydrogen bomb.

While at Zurich Polytechnic, Einstein fell in love with his fellow student Mileva Maric, but his parents opposed the match and he lacked the money to marry. The couple had an illegitimate daughter, Lieserl, born in early 1902, of whom little is known. After finding a position as a clerk at the Swiss patent office in Bern, Einstein married Maric in 1903; they would have two more children, Hans Albert (born 1904) and Eduard (born 1910).

Einstein's Miracle Year (1905)

While working at the patent office, Einstein did some of the most creative work of his life, producing no fewer than four groundbreaking articles in 1905 alone. In the first paper, he applied the quantum theory (developed by German physicist Max Planck) to light in order to explain the phenomenon known as the photoelectric effect, by which a material will emit electrically charged particles when hit by light. The second article contained Einstein's experimental proof of the existence of atoms, which he got by analyzing the phenomenon of Brownian motion, in which tiny particles were suspended in water.

In the third and most famous article, titled "On the Electrodynamics of Moving Bodies," Einstein confronted the apparent contradiction between two principal theories of physics: Isaac Newton's concepts of absolute space and time and James Clerk Maxwell's idea that the speed of light was a constant. To do this, Einstein introduced his special theory of relativity, which held that the laws of physics are the same even for objects moving in different inertial frames (i.e. at constant speeds relative to each other), and that the speed of light is a constant in all inertial frames. A fourth paper concerned the fundamental relationship between mass and energy, concepts viewed previously as completely separate. Einstein's famous equation E = mc2 (where "c" was the constant speed of light) expressed this relationship.

From Zurich to Berlin (1906-1932)

Einstein continued working at the patent office until 1909, when he finally found a full-time academic post at the University of Zurich. In 1913, he arrived at the University of Berlin, where he was made director of the Kaiser Wilhelm Institute for Physics. The move coincided with the beginning of Einstein's romantic relationship with a cousin of his, Elsa Lowenthal, whom he would eventually marry after divorcing Mileva. In 1915, Einstein published the general theory of relativity, which he considered his masterwork. This theory found that gravity, as well as motion, can affect time and space. According to Einstein's equivalence principle-which held that gravity's pull in one direction is equivalent to an acceleration of speed in the opposite direction-if light is bent by acceleration, it must also be bent by gravity. In 1919, two expeditions sent to perform experiments during a solar eclipse found that light rays from distant stars were deflected or bent by the gravity of the sun in just the way Einstein had predicted.

The general theory of relativity was the first major theory of gravity since Newton's, more than 250 years before, and the results made a tremendous splash worldwide, with the London Times proclaiming a "Revolution in Science" and a "New Theory of the Universe." Einstein began touring the world, speaking in front of crowds of thousands in the United States, Britain, France and Japan. In 1921, he won the Nobel Prize for his work on the photoelectric effect, as his work on relativity remained controversial at the time. Einstein soon began building on his theories to form a new science of cosmology, which held that the universe was dynamic instead of static, and was capable of expanding and contracting.

Einstein Moves to the United States (1933-39)

A longtime pacifist and a Jew, Einstein became the target of hostility in Weimar Germany, where many citizens were suffering plummeting economic fortunes in the aftermath of defeat in the Great War. In December 1932, a month before Adolf Hitler became chancellor of Germany, Einstein made the decision to emigrate to the United States, where he took a position at the newly founded Institute for Advanced Study in Princeton, New Jersey. He would never again enter the country of his birth.

By the time Einstein's wife Elsa died in 1936, he had been involved for more than a decade with his efforts to find a unified field theory, which would incorporate all the laws of the universe, and those of physics, into a single framework. In the process, Einstein became increasingly isolated from many of his colleagues, who were focused mainly on the quantum theory and its implications, rather than on relativity.

Einstein's Later Life (1939-1955)

In the late 1930s, Einstein's theories, including his equation E=mc2, helped form the basis of the development of the atomic bomb. In 1939, at the urging of the Hungarian physicist Leo Szilard, Einstein wrote to President Franklin D. Roosevelt advising him to approve funding for the development of uranium before Germany could gain the upper hand. Einstein, who became a U.S. citizen in 1940 but retained his Swiss citizenship, was never asked to participate in the resulting Manhattan Project, as the U.S. government suspected his socialist and pacifist views. In 1952, Einstein declined an offer extended by David Ben-Gurion, Israel's premier, to become president of Israel.

Throughout the last years of his life, Einstein continued his quest for a unified field theory. Though he published an article on the theory in Scientific American in 1950, it remained unfinished when he died, of an aortic aneurysm, five years later. In the decades following his death, Einstein's reputation and stature in the world of physics only grew, as physicists began to unravel the mystery of the so-called "strong force" (the missing piece of his unified field theory) and space satellites further verified the principles of his cosmology.

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Born on March 14, 1879, in the southern German city of Ulm, Albert Einstein grew up in a middle-class Jewish family in Munich. As a child, Einstein became fascinated by music (he played the violin), mathematics and science.

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He was born on March 3, 1847. and he also invented the telephone. He died on August 2, 1922

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Birthplace

Alexander Graham Bell was born in Edinburgh, Scotland, on March 3, 1847. Bell's father was a professor of speech elocution at the University of Edinburgh and his mother, despite being deaf, was an accomplished pianist.

Young Alexander was an intellectually curious child who studied piano and began inventing things at an early age. Both of his brothers passed away from tuberculosis by the time Bell was in his early twenties.

Education

Initially, Bell's education consisted of homeschooling. Bell didn't excel academically, but he was a problem solver from an early age.

When he was just 12, the young Alexander invented a device with rotating paddles and nail brushes that could quickly remove husks from wheat grain to help improve a farming process. At age 16, Bell began studying the mechanics of speech.

He went on to attend Royal High School and the University of Edinburgh. In 1870, Bell, along with his family, moved to Canada. The following year, he settled in the United States.

While in the United States, Bell implemented a system his father developed to teach deaf children called "visible speech"-a set of symbols that represented speech sounds.

In 1872, he opened the School of Vocal Physiology and Mechanics of Speech in Boston, where deaf people were taught to speak. At age 26, the budding inventor became Professor of Vocal Physiology and Elocution at the Boston University School of Oratory, even though he didn't have a university degree.

While teaching, Bell met Mabel Hubbard, a deaf student. The couple married on July 11, 1877. They went on to have four children, including two sons who died as infants.

When Was the Telephone Invented?

In 1871, Bell started working on the harmonic telegraph - a device that allowed multiple messages to be transmitted over a wire at the same time. While trying to perfect this technology, which was backed by a group of investors, Bell became preoccupied with finding a way to transmit human voice over wires.

By 1875, Bell, with the help of his partner Thomas Watson, had come up with a simple receiver that could turn electricity into sound.

Other scientists, including Antonio Meucci and Elisha Gray, were working on similar technologies, and there's some debate over who should be credited with the invention of the telephone. It's said that Bell raced to the patent office to be the first to secure the rights to the discovery.

On March 7, 1876, Bell was granted his telephone patent. A few days later, he made the first-ever telephone call to Watson, allegedly uttering the now-famous phrase, "Mr. Watson, come here. I want you."

By 1877, the Bell Telephone Company, which today is known as AT&T, was created. In 1915, Bell made the first transcontinental phone call to Watson from New York City to San Francisco.

Did you know? Alexander Graham Bell refused to have a telephone in his study, fearing it would distract him from his scientific work.

Legal Headaches

The inventor faced a nearly 20-year legal battle with other scientists, including Gray and Meucci, who claimed they created telephone prototypes prior to Bell's patent.

In 1887, the U.S. government moved to withdraw the patent issued to Bell, but after a series of rulings, the Bell company won in a Supreme Court decision. While the Bell Company faced over 550 court challenges, in the end, none were successful.

Inventions and Accomplishments

In addition to the telephone, Bell worked on hundreds of projects throughout his career and received patents in various fields. Some of his other notable inventions were:

The metal detector: Bell initially came up with this device to locate a bullet inside of assassinated President James A. Garfield.

Photophone: The photophone allowed transmission of speech on a beam of light.

Graphophone: This improved version of the phonograph could record and play back sound.

Audiometer: This gadget was used to detect hearing problems.

In 1880, Bell was awarded the French Volta Prize, and with the money, he founded a facility devoted to scientific discovery, the Volta Laboratory in Washington, D.C.

Bell invented numerous techniques to help teach speech to the deaf and even worked with well-known author and activist Helen Keller. He also helped launch Science magazine, and from 1896 to 1904 served as president of the National Geographic Society.

Quotes by Bell

While Bell is typically known for what he invented, he's also remembered for what he said and wrote. Some famous quotes attributed to Bell include:

* "When one door closes another door opens; but we so often look so long and so regretfully upon the closed door, that we do not see the ones which open for us."

* "A man's own judgment should be the final appeal in all that relates to himself."

* "Before anything else, preparation is the key to success."

* "Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to focus."

* "Great discoveries and improvements invariably involve the cooperation of many minds."

* "The most successful men in the end are those whose success is the result of steady accretion."

* "The only difference between success and failure is the ability to take action."

* "You cannot force ideas. Successful ideas are the result of slow growth."

* "The inventor looks upon the world and is not contented with things as they are. He wants to improve whatever he sees, he wants to benefit the world; he is haunted by an idea. The spirit of invention possesses him, seeking materialization."

Death and Legacy

Bell died on August 2, 1922, at the age of 75 in Nova Scotia, Canada. The cause of his death was complications from diabetes. He was survived by his wife and two daughters.

During Bell's funeral, every phone in North America was silenced to pay tribute to the inventor.

Today, the famous scientist is remembered for his groundbreaking work in sound technology and improving education for the deaf. His best-known invention, the telephone, forever changed the way humans communicate with each other.

Sources

Alexander Graham Bell. PBS.
History: Alexander Graham Bell. BBC.
Alexander Graham Bell. Famous Scientists.
Who is credited with inventing the telephone? Library of Congress.

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Alexander Graham Bell: Telephone & Inventions - HISTORY

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Alexander Graham Bell is known for his many inventions, especially the telephone and a metal detector. He later created the Bell Telephone Company, now AT&T.

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He was born on January 17, 1706 and died on April 17, 1789 at the age of 84. he also founded electricity.

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Benjamin Franklin ‑ Biography, Inventions & Facts | HISTORY

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Benjamin Franklin (1706‑1790) was a statesman, author, publisher, scientist, inventor, diplomat, a Founding Father and a leading figure of early American history.

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He was born on February 11, 1847 in Milan Ohio. And he invented the Light bulb. He died on October 18, 1931.

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Thomas Edison's Early Life

Thomas Alva Edison was born on February 11, 1847, in Milan, Ohio. He was the seventh and last child born to Samuel Edison Jr. and Nancy Elliott Edison, and would be one of four to survive to adulthood. At age 12, he developed hearing loss-he was reportedly deaf in one ear, and nearly deaf in the other-which was variously attributed to scarlet fever, mastoiditis or a blow to the head.

Thomas Edison received little formal education, and left school in 1859 to begin working on the railroad between Detroit and Port Huron, Michigan, where his family then lived. By selling food and newspapers to train passengers, he was able to net about $50 profit each week, a substantial income at the time-especially for a 13-year-old.

Did you know? By the time he died at age 84 on October 18, 1931, Thomas Edison had amassed a record 1,093 patents: 389 for electric light and power, 195 for the phonograph, 150 for the telegraph, 141 for storage batteries and 34 for the telephone.

During the Civil War, Edison learned the emerging technology of telegraphy, and traveled around the country working as a telegrapher. But with the development of auditory signals for the telegraph, he was soon at a disadvantage as a telegrapher.

To address this problem, Edison began to work on inventing devices that would help make things possible for him despite his deafness (including a printer that would convert electrical telegraph signals to letters). In early 1869, he quit telegraphy to pursue invention full time.

Edison in Menlo Park

From 1870 to 1875, Edison worked out of Newark, New Jersey, where he developed telegraph-related products for both Western Union Telegraph Company (then the industry leader) and its rivals. Edison's mother died in 1871, and that same year he married 16-year-old Mary Stillwell.

Despite his prolific telegraph work, Edison encountered financial difficulties by late 1875, but one year later-with the help of his father-Edison was able to build a laboratory and machine shop in Menlo Park, New Jersey, 12 miles south of Newark.

With the success of his Menlo Park "invention factory," some historians credit Edison as the inventor of the research and development (R&D) lab, a collaborative, team-based model later copied by AT&T at Bell Labs, the DuPont Experimental Station, the Xerox Palo Alto Research Center (PARC) and other R&D centers.

In 1877, Edison developed the carbon transmitter, a device that improved the audibility of the telephone by making it possible to transmit voices at higher volume and with more clarity.

That same year, his work with the telegraph and telephone led him to invent the phonograph, which recorded sound as indentations on a sheet of paraffin-coated paper; when the paper was moved beneath a stylus, the sounds were reproduced. The device made an immediate splash, though it took years before it could be produced and sold commercially.

Edison and the Light Bulb

In 1878, Edison focused on inventing a safe, inexpensive electric light to replace the gaslight-a challenge that scientists had been grappling with for the last 50 years. With the help of prominent financial backers like J.P. Morgan and the Vanderbilt family, Edison set up the Edison Electric Light Company and began research and development.

He made a breakthrough in October 1879 with a bulb that used a platinum filament, and in the summer of 1880 hit on carbonized bamboo as a viable alternative for the filament, which proved to be the key to a long-lasting and affordable light bulb. In 1881, he set up an electric light company in Newark, and the following year moved his family (which by now included three children) to New York.

Though Edison's early incandescent lighting systems had their problems, they were used in such acclaimed events as the Paris Lighting Exhibition in 1881 and the Crystal Palace in London in 1882.

Competitors soon emerged, notably George Westinghouse, a proponent of alternating or AC current (as opposed to Edison's direct or DC current). By 1889, AC current would come to dominate the field, and the Edison General Electric Co. merged with another company in 1892 to become General Electric.

Later Years and Inventions

Edison's wife, Mary, died in August 1884, and in February 1886 he remarried Mirna Miller; they would have three children together. He built a large estate called Glenmont and a research laboratory in West Orange, New Jersey, with facilities including a machine shop, a library and buildings for metallurgy, chemistry and woodworking.

Spurred on by others' work on improving the phonograph, he began working toward producing a commercial model. He also had the idea of linking the phonograph to a zoetrope, a device that strung together a series of photographs in such a way that the images appeared to be moving. Working with William K.L. Dickson, Edison succeeded in constructing a working motion picture camera, the Kinetograph, and a viewing instrument, the Kinetoscope, which he patented in 1891.

After years of heated legal battles with his competitors in the fledgling motion-picture industry, Edison had stopped working with moving film by 1918. In the interim, he had had success developing an alkaline storage battery, which he originally worked on as a power source for the phonograph but later supplied for submarines and electric vehicles.

In 1912, automaker Henry Ford asked Edison to design a battery for the self-starter, which would be introduced on the iconic Model T. The collaboration began a continuing relationship between the two great American entrepreneurs.

Despite the relatively limited success of his later inventions (including his long struggle to perfect a magnetic ore-separator), Edison continued working into his 80s. His rise from poor, uneducated railroad worker to one of the most famous men in the world made him a folk hero.

More than any other individual, he was credited with building the framework for modern technology and society in the age of electricity. His Glenmont estate-where he died in 1931-and West Orange laboratory are now open to the public as the Thomas Edison National Historical Park.

Sources

Thomas Edison's Greatest Invention. The Atlantic.
Life of Thomas Alva Edison. Library of Congress.
7 Epic Fails Brought to You by the Genius Mind of Thomas Edison. Smithsonian Magazine.

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Thomas Edison: Facts, House & Inventions - HISTORY

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Thomas Edison was a prolific inventor and businessman whose inventions include the phonograph, incandescent light bulb, motion picture camera and alkaline battery.

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He was born on December 26,  1791. And he invented the digital computer in the mid 1830s. He died on October 18, 8171

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Charles Babbage | Biography, Computers, Inventions, & Facts

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Charles Babbage, English mathematician and inventor who is credited with having conceived the first automatic digital computer. He designed two calculating devices, the Difference Engine and the Analytical Engine, neither of which were fully built. Learn more about Babbage in this article.

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He won the Nobel Prize for Physics in 1912.

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Childhood and education

Einstein's parents were secular, middle-class Jews. His father, Hermann Einstein, was originally a featherbed salesman and later ran an electrochemical factory with moderate success. His mother, the former Pauline Koch, ran the family household. He had one sister, Maria (who went by the name Maja), born two years after Albert.

Einstein would write that two "wonders" deeply affected his early years. The first was his encounter with a compass at age five. He was mystified that invisible forces could deflect the needle. This would lead to a lifelong fascination with invisible forces. The second wonder came at age 12 when he discovered a book of geometry, which he devoured, calling it his "sacred little geometry book."

Einstein became deeply religious at age 12, even composing several songs in praise of God and chanting religious songs on the way to school. This began to change, however, after he read science books that contradicted his religious beliefs. This challenge to established authority left a deep and lasting impression. At the Luitpold Gymnasium, Einstein often felt out of place and victimized by a Prussian-style educational system that seemed to stifle originality and creativity. One teacher even told him that he would never amount to anything.

Yet another important influence on Einstein was a young medical student, Max Talmud (later Max Talmey), who often had dinner at the Einstein home. Talmud became an informal tutor, introducing Einstein to higher mathematics and philosophy. A pivotal turning point occurred when Einstein was 16 years old. Talmud had earlier introduced him to a children's science series by Aaron Bernstein, Naturwissenschaftliche Volksbucher (1867-68; Popular Books on Physical Science), in which the author imagined riding alongside electricity that was traveling inside a telegraph wire. Einstein then asked himself the question that would dominate his thinking for the next 10 years: What would a light beam look like if you could run alongside it? If light were a wave, then the light beam should appear stationary, like a frozen wave. Even as a child, though, he knew that stationary light waves had never been seen, so there was a paradox. Einstein also wrote his first "scientific paper" at that time ("The Investigation of the State of Aether in Magnetic Fields").

Einstein's education was disrupted by his father's repeated failures at business. In 1894, after his company failed to get an important contract to electrify the city of Munich, Hermann Einstein moved to Milan to work with a relative. Einstein was left at a boardinghouse in Munich and expected to finish his education. Alone, miserable, and repelled by the looming prospect of military duty when he turned 16, Einstein ran away six months later and landed on the doorstep of his surprised parents. His parents realized the enormous problems that he faced as a school dropout and draft dodger with no employable skills. His prospects did not look promising.

Fortunately, Einstein could apply directly to the Eidgenössische Polytechnische Schule ("Swiss Federal Polytechnic School"; in 1911, following expansion in 1909 to full university status, it was renamed the Eidgenössische Technische Hochschule, or "Swiss Federal Institute of Technology") in Zürich without the equivalent of a high school diploma if he passed its stiff entrance examinations. His marks showed that he excelled in mathematics and physics, but he failed at French, chemistry, and biology. Because of his exceptional math scores, he was allowed into the polytechnic on the condition that he first finish his formal schooling. He went to a special high school run by Jost Winteler in Aarau, Switzerland, and graduated in 1896. He also renounced his German citizenship at that time. (He was stateless until 1901, when he was granted Swiss citizenship.) He became lifelong friends with the Winteler family, with whom he had been boarding. (Winteler's daughter, Marie, was Einstein's first love; Einstein's sister, Maja, would eventually marry Winteler's son Paul; and his close friend Michele Besso would marry their eldest daughter, Anna.)

Einstein would recall that his years in Zürich were some of the happiest years of his life. He met many students who would become loyal friends, such as Marcel Grossmann, a mathematician, and Besso, with whom he enjoyed lengthy conversations about space and time. He also met his future wife, Mileva Maric, a fellow physics student from Serbia.

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Albert Einstein | Biography, Education, Discoveries, & Facts

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Albert Einstein, the brilliant physicist and Nobel laureate, revolutionized our understanding of the universe with his theory of relativity and became a symbol of genius that continues to inspire minds worldwide.

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He invented the telephone, the telegraph, and the phonograph.

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Alexander Graham Bell | Biography, Education, Telephone, Inventions, & Facts

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Alexander Graham Bell, (born March 3, 1847, Edinburgh, Scotland—died August 2, 1922, Beinn Bhreagh, Cape Breton Island, Nova Scotia, Canada), Scottish-born American inventor, scientist, and teacher of the deaf whose foremost accomplishments were the invention of the telephone (1876) and the refinem…

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He Figured out that the Lightning was making Electricity at its highest point.

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Benjamin Franklin, (born January 17 [January 6, Old Style], 1706, Boston, Massachusetts [U.S.]-died April 17, 1790, Philadelphia, Pennsylvania, U.S.), American printer and publisher, author, inventor and scientist, and diplomat. One of the foremost of the Founding Fathers, Franklin helped draft the Declaration of Independence and was one of its signers, represented the United States in France during the American Revolution, and was a delegate to the Constitutional Convention. He made important contributions to science, especially in the understanding of electricity, and is remembered for the wit, wisdom, and elegance of his writing.

Early life

Franklin was born the 10th son of the 17 children of a man who made soap and candles, one of the lowliest of the artisan crafts. In an age that privileged the firstborn son, Franklin was, as he tartly noted in his Autobiography, "the youngest Son of the youngest Son for five Generations back." He learned to read very early and had one year in grammar school and another under a private teacher, but his formal education ended at age 10. At 12 he was apprenticed to his brother James, a printer. His mastery of the printer's trade, of which he was proud to the end of his life, was achieved between 1718 and 1723. In the same period he read tirelessly and taught himself to write effectively.

His first enthusiasm was for poetry, but, discouraged with the quality of his own, he gave it up. Prose was another matter. Young Franklin discovered a volume of The Spectator-featuring Joseph Addison and Sir Richard Steele's famous periodical essays, which had appeared in England in 1711-12-and saw in it a means for improving his writing. He read these Spectator papers over and over, copied and recopied them, and then tried to recall them from memory. He even turned them into poetry and then back into prose. Franklin realized, as all the Founders did, that writing competently was such a rare talent in the 18th century that anyone who could do it well immediately attracted attention. "Prose writing" became, as he recalled in his Autobiography, "of great Use to me in the Course of my Life, and was a principal Means of my Advancement."

In 1721 James Franklin founded a weekly newspaper, the New-England Courant, to which readers were invited to contribute. Benjamin, now 16, read and perhaps set in type these contributions and decided that he could do as well himself. In 1722 he wrote a series of 14 essays signed "Silence Dogood" in which he lampooned everything from funeral eulogies to the students of Harvard College. For one so young to assume the persona of a middle-aged woman was a remarkable feat, and Franklin took "exquisite Pleasure" in the fact that his brother and others became convinced that only a learned and ingenious wit could have written these essays.

Late in 1722 James Franklin got into trouble with the provincial authorities and was forbidden to print or publish the Courant. To keep the paper going, he discharged his younger brother from his original apprenticeship and made him the paper's nominal publisher. New indentures were drawn up but not made public. Some months later, after a bitter quarrel, Benjamin secretly left home, sure that James would not "go to law" and reveal the subterfuge he had devised.

Youthful adventures

Failing to find work in New York City, Franklin at age 17 went on to Quaker-dominated Philadelphia, a much more open and religiously tolerant place than Puritan Boston. One of the most memorable scenes of the Autobiography is the description of his arrival on a Sunday morning, tired and hungry. Finding a bakery, he asked for three pennies' worth of bread and got "three great Puffy Rolls." Carrying one under each arm and munching on the third, he walked up Market Street past the door of the Read family, where stood Deborah, his future wife. She saw him and "thought I made, as I certainly did, a most awkward ridiculous Appearance."

A few weeks later he was rooming at the Reads' and employed as a printer. By the spring of 1724 he was enjoying the companionship of other young men with a taste for reading, and he was also being urged to set up in business for himself by the governor of Pennsylvania, Sir William Keith. At Keith's suggestion, Franklin returned to Boston to try to raise the necessary capital. His father thought him too young for such a venture, so Keith offered to foot the bill himself and arranged Franklin's passage to England so that he could choose his type and make connections with London stationers and booksellers. Franklin exchanged "some promises" about marriage with Deborah Read and, with a young friend, James Ralph, as his companion, sailed for London in November 1724, just over a year after arriving in Philadelphia. Not until his ship was well out at sea did he realize that Governor Keith had not delivered the letters of credit and introduction he had promised.

In London Franklin quickly found employment in his trade and was able to lend money to Ralph, who was trying to establish himself as a writer. The two young men enjoyed the theatre and the other pleasures of the city, including women. While in London, Franklin wrote A Dissertation on Liberty and Necessity, Pleasure and Pain (1725), a Deistical pamphlet inspired by his having set type for William Wollaston's moral tract, The Religion of Nature Delineated. Franklin argued in his essay that since human beings have no real freedom of choice, they are not morally responsible for their actions. This was perhaps a nice justification for his self-indulgent behaviour in London and his ignoring of Deborah, to whom he had written only once. He later repudiated the pamphlet, burning all but one of the copies still in his possession.

By 1726 Franklin was tiring of London. He considered becoming an itinerant teacher of swimming, but, when Thomas Denham, a Quaker merchant, offered him a clerkship in his store in Philadelphia with a prospect of fat commissions in the West Indian trade, he decided to return home.

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Benjamin Franklin | Biography, Inventions, Books, American Revolution, & Facts

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Benjamin Franklin, American printer and publisher, author, inventor and scientist, and diplomat. One of the foremost of the American Founding Fathers, he helped draft the Declaration of Independence. He also made important contributions to science, especially in the understanding of technology.

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Charles Babbage Biography, Computer models and Inventions

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The father of Charles was a rich man, so it was possible for Charles to receive instruction from several elite schools and teachers during the course of his elementary education.
He was about eight when he had to move to a country school to recover from a dangerous fever. His parents sentenced tha…