thomas alva edison biography pdf

Thomas Edison

Thomas Edison is credited with inventions such as the first practical incandescent light bulb and the phonograph. He held over 1,000 patents for his inventions.

(1847-1931)

Who Was Thomas Edison?

Early life and education.

Edison was born on February 11, 1847, in Milan, Ohio. He was the youngest of seven children of Samuel and Nancy Edison. His father was an exiled political activist from Canada, while his mother was an accomplished school teacher and a major influence in Edison’s early life. An early bout with scarlet fever as well as ear infections left Edison with hearing difficulties in both ears as a child and nearly deaf as an adult.

Edison would later recount, with variations on the story, that he lost his hearing due to a train incident in which his ears were injured. But others have tended to discount this as the sole cause of his hearing loss.

In 1854, Edison’s family moved to Port Huron, Michigan, where he attended public school for a total of 12 weeks. A hyperactive child, prone to distraction, he was deemed "difficult" by his teacher.

His mother quickly pulled him from school and taught him at home. At age 11, he showed a voracious appetite for knowledge, reading books on a wide range of subjects. In this wide-open curriculum Edison developed a process for self-education and learning independently that would serve him throughout his life.

At age 12, Edison convinced his parents to let him sell newspapers to passengers along the Grand Trunk Railroad line. Exploiting his access to the news bulletins teletyped to the station office each day, Edison began publishing his own small newspaper, called the Grand Trunk Herald .

The up-to-date articles were a hit with passengers. This was the first of what would become a long string of entrepreneurial ventures where he saw a need and capitalized on the opportunity.

Edison also used his access to the railroad to conduct chemical experiments in a small laboratory he set up in a train baggage car. During one of his experiments, a chemical fire started and the car caught fire.

The conductor rushed in and struck Edison on the side of the head, probably furthering some of his hearing loss. He was kicked off the train and forced to sell his newspapers at various stations along the route.

Edison the Telegrapher

While Edison worked for the railroad, a near-tragic event turned fortuitous for the young man. After Edison saved a three-year-old from being run over by an errant train , the child’s grateful father rewarded him by teaching him to operate a telegraph . By age 15, he had learned enough to be employed as a telegraph operator.

For the next five years, Edison traveled throughout the Midwest as an itinerant telegrapher, subbing for those who had gone to the Civil War . In his spare time, he read widely, studied and experimented with telegraph technology, and became familiar with electrical science.

In 1866, at age 19, Edison moved to Louisville, Kentucky, working for The Associated Press. The night shift allowed him to spend most of his time reading and experimenting. He developed an unrestricted style of thinking and inquiry, proving things to himself through objective examination and experimentation.

Initially, Edison excelled at his telegraph job because early Morse code was inscribed on a piece of paper, so Edison's partial deafness was no handicap. However, as the technology advanced, receivers were increasingly equipped with a sounding key, enabling telegraphers to "read" message by the sound of the clicks. This left Edison disadvantaged, with fewer and fewer opportunities for employment.

In 1868, Edison returned home to find his beloved mother was falling into mental illness and his father was out of work. The family was almost destitute. Edison realized he needed to take control of his future.

Upon the suggestion of a friend, he ventured to Boston, landing a job for the Western Union Company . At the time, Boston was America's center for science and culture, and Edison reveled in it. In his spare time, he designed and patented an electronic voting recorder for quickly tallying votes in the legislature.

However, Massachusetts lawmakers were not interested. As they explained, most legislators didn't want votes tallied quickly. They wanted time to change the minds of fellow legislators.

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In 1871 Edison married 16-year-old Mary Stilwell, who was an employee at one of his businesses. During their 13-year marriage, they had three children, Marion, Thomas and William, who himself became an inventor.

In 1884, Mary died at the age of 29 of a suspected brain tumor. Two years later, Edison married Mina Miller, 19 years his junior.

Thomas Edison: Inventions

In 1869, at 22 years old, Edison moved to New York City and developed his first invention, an improved stock ticker called the Universal Stock Printer, which synchronized several stock tickers' transactions.

The Gold and Stock Telegraph Company was so impressed, they paid him $40,000 for the rights. With this success, he quit his work as a telegrapher to devote himself full-time to inventing.

By the early 1870s, Edison had acquired a reputation as a first-rate inventor. In 1870, he set up his first small laboratory and manufacturing facility in Newark, New Jersey, and employed several machinists.

As an independent entrepreneur, Edison formed numerous partnerships and developed products for the highest bidder. Often that was Western Union Telegraph Company, the industry leader, but just as often, it was one of Western Union's rivals.

Quadruplex Telegraph

In one such instance, Edison devised for Western Union the quadruplex telegraph, capable of transmitting two signals in two different directions on the same wire, but railroad tycoon Jay Gould snatched the invention from Western Union, paying Edison more than $100,000 in cash, bonds and stock, and generating years of litigation.

In 1876, Edison moved his expanding operations to Menlo Park, New Jersey, and built an independent industrial research facility incorporating machine shops and laboratories.

That same year, Western Union encouraged him to develop a communication device to compete with Alexander Graham Bell 's telephone. He never did.

In December 1877, Edison developed a method for recording sound: the phonograph . His innovation relied upon tin-coated cylinders with two needles: one for recording sound, and another for playback.

His first words spoken into the phonograph's mouthpiece were, "Mary had a little lamb." Though not commercially viable for another decade, the phonograph brought him worldwide fame, especially when the device was used by the U.S. Army to bring music to the troops overseas during World War I .

While Edison was not the inventor of the first light bulb, he came up with the technology that helped bring it to the masses. Edison was driven to perfect a commercially practical, efficient incandescent light bulb following English inventor Humphry Davy’s invention of the first early electric arc lamp in the early 1800s.

Over the decades following Davy’s creation, scientists such as Warren de la Rue, Joseph Wilson Swan, Henry Woodward and Mathew Evans had worked to perfect electric light bulbs or tubes using a vacuum but were unsuccessful in their attempts.

After buying Woodward and Evans' patent and making improvements in his design, Edison was granted a patent for his own improved light bulb in 1879. He began to manufacture and market it for widespread use. In January 1880, Edison set out to develop a company that would deliver the electricity to power and light the cities of the world.

That same year, Edison founded the Edison Illuminating Company—the first investor-owned electric utility—which later became General Electric .

In 1881, he left Menlo Park to establish facilities in several cities where electrical systems were being installed. In 1882, the Pearl Street generating station provided 110 volts of electrical power to 59 customers in lower Manhattan.

Later Inventions & Business

In 1887, Edison built an industrial research laboratory in West Orange, New Jersey, which served as the primary research laboratory for the Edison lighting companies.

He spent most of his time there, supervising the development of lighting technology and power systems. He also perfected the phonograph, and developed the motion picture camera and the alkaline storage battery.

Over the next few decades, Edison found his role as inventor transitioning to one as industrialist and business manager. The laboratory in West Orange was too large and complex for any one man to completely manage, and Edison found he was not as successful in his new role as he was in his former one.

Edison also found that much of the future development and perfection of his inventions was being conducted by university-trained mathematicians and scientists. He worked best in intimate, unstructured environments with a handful of assistants and was outspoken about his disdain for academia and corporate operations.

During the 1890s, Edison built a magnetic iron-ore processing plant in northern New Jersey that proved to be a commercial failure. Later, he was able to salvage the process into a better method for producing cement.

Motion Picture

On April 23, 1896, Edison became the first person to project a motion picture, holding the world's first motion picture screening at Koster & Bial's Music Hall in New York City.

His interest in motion pictures began years earlier, when he and an associate named W. K. L. Dickson developed a Kinetoscope, a peephole viewing device. Soon, Edison's West Orange laboratory was creating Edison Films. Among the first of these was The Great Train Robbery , released in 1903.

As the automobile industry began to grow, Edison worked on developing a suitable storage battery that could power an electric car. Though the gasoline-powered engine eventually prevailed, Edison designed a battery for the self-starter on the Model T for friend and admirer Henry Ford in 1912. The system was used extensively in the auto industry for decades.

During World War I, the U.S. government asked Edison to head the Naval Consulting Board, which examined inventions submitted for military use. Edison worked on several projects, including submarine detectors and gun-location techniques.

However, due to his moral indignation toward violence, he specified that he would work only on defensive weapons, later noting, "I am proud of the fact that I never invented weapons to kill."

By the end of the 1920s, Edison was in his 80s. He and his second wife, Mina, spent part of their time at their winter retreat in Fort Myers, Florida, where his friendship with automobile tycoon Henry Ford flourished and he continued to work on several projects, ranging from electric trains to finding a domestic source for natural rubber.

During his lifetime, Edison received 1,093 U.S. patents and filed an additional 500 to 600 that were unsuccessful or abandoned.

He executed his first patent for his Electrographic Vote-Recorder on October 13, 1868, at the age of 21. His last patent was for an apparatus for holding objects during the electroplating process.

Thomas Edison and Nikola Tesla

Edison became embroiled in a longstanding rivalry with Nikola Tesla , an engineering visionary with academic training who worked with Edison's company for a time.

The two parted ways in 1885 and would publicly clash in the " War of the Currents " about the use of direct current electricity, which Edison favored, vs. alternating currents, which Tesla championed. Tesla then entered into a partnership with George Westinghouse, an Edison competitor, resulting in a major business feud over electrical power.

Elephant Killing

One of the unusual - and cruel - methods Edison used to convince people of the dangers of alternating current was through public demonstrations where animals were electrocuted.

One of the most infamous of these shows was the 1903 electrocution of a circus elephant named Topsy on New York's Coney Island.

Edison died on October 18, 1931, from complications of diabetes in his home, Glenmont, in West Orange, New Jersey. He was 84 years old.

Many communities and corporations throughout the world dimmed their lights or briefly turned off their electrical power to commemorate his passing.

Edison's career was the quintessential rags-to-riches success story that made him a folk hero in America.

An uninhibited egoist, he could be a tyrant to employees and ruthless to competitors. Though he was a publicity seeker, he didn’t socialize well and often neglected his family.

But by the time he died, Edison was one of the most well-known and respected Americans in the world. He had been at the forefront of America’s first technological revolution and set the stage for the modern electric world.

QUICK FACTS

• Name: Thomas Alva Edison
• Birth Year: 1847
• Birth date: February 11, 1847
• Birth State: Ohio
• Birth City: Milan
• Birth Country: United States
• Gender: Male
• Best Known For: Thomas Edison is credited with inventions such as the first practical incandescent light bulb and the phonograph. He held over 1,000 patents for his inventions.
• Technology and Engineering
• Astrological Sign: Aquarius
• The Cooper Union
• Interesting Facts
• Thomas Edison was considered too difficult as a child so his mother homeschooled him.
• Edison became the first to project a motion picture in 1896, at Koster & Bial's Music Hall in New York City.
• Edison had a bitter rivalry with Nikola Tesla.
• During his lifetime, Edison received 1,093 U.S. patents.
• Death Year: 1931
• Death date: October 18, 1931
• Death State: New Jersey
• Death City: West Orange
• Death Country: United States

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CITATION INFORMATION

• Article Title: Thomas Edison Biography
• Author: Biography.com Editors
• Website Name: The Biography.com website
• Url: https://www.biography.com/inventors/thomas-edison
• Access Date:
• Publisher: A&E; Television Networks
• Last Updated: May 13, 2021
• Original Published Date: April 2, 2014
• Opportunity is missed by most people because it is dressed in overalls and looks like work.
• Everything comes to him who hustles while he waits.
• I am proud of the fact that I never invented weapons to kill.
• I'd put my money on the sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run out before we tackle that.
• Restlessness is discontent — and discontent is the first necessity of progress. Show me a thoroughly satisfied man — and I will show you a failure.
• To invent, you need a good imagination and a pile of junk.
• Hell, there ain't no rules around here! We're trying to accomplish something.
• I always invent to obtain money to go on inventing.
• The phonograph, in one sense, knows more than we do ourselves. For it will retain a perfect mechanical memory of many things which we may forget, even though we have said them.
• We know nothing; we have to creep by the light of experiments, never knowing the day or the hour that we shall find what we are after.
• Everything, anything is possible; the world is a vast storehouse of undiscovered energy.
• The recurrence of a phenomenon like Edison is not very likely... He will occupy a unique and exalted position in the history of his native land, which might well be proud of his great genius and undying achievements in the interest of humanity.” (Nikola Tesla)

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Thomas Edison

By: History.com Editors

Updated: October 17, 2023 | Original: November 9, 2009

Thomas Edison was a prolific inventor and savvy businessman who acquired a record number of 1,093 patents (singly or jointly) and was the driving force behind such innovations as the phonograph, the incandescent light bulb, the alkaline battery and one of the earliest motion picture cameras. He also created the world’s first industrial research laboratory. Known as the “Wizard of Menlo Park,” for the New Jersey town where he did some of his best-known work, Edison had become one of the most famous men in the world by the time he was in his 30s. In addition to his talent for invention, Edison was also a successful manufacturer who was highly skilled at marketing his inventions—and himself—to the public.

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 Nikola Tesla, 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 .

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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Edison: A Biography 1st Edition

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• ISBN-10 0471548065
• ISBN-13 978-0471548065
• Edition 1st
• Publisher Wiley
• Publication date February 11, 1992
• Language English
• Dimensions 6.12 x 1.43 x 9 inches
• Print length 528 pages
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• Publisher ‏ : ‎ Wiley; 1st edition (February 11, 1992)
• Language ‏ : ‎ English
• Paperback ‏ : ‎ 528 pages
• ISBN-10 ‏ : ‎ 0471548065
• ISBN-13 ‏ : ‎ 978-0471548065
• Item Weight ‏ : ‎ 1.6 pounds
• Dimensions ‏ : ‎ 6.12 x 1.43 x 9 inches
• #2,758 in Scientist Biographies
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The story of Thomas Alva Edison, inventor : the wizard of Menlo Park

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