Thomas Edison(1847 — 1931)
Thomas Edison
États-Unis
10 min read
American inventor and industrialist (1847–1931), Edison is one of the greatest innovators in history. He filed more than 1,000 patents and created the incandescent light bulb, the phonograph, and the electrical distribution system.
Famous Quotes
« Genius is one percent inspiration and ninety-nine percent perspiration. »
« I have not failed. I've just found 10,000 ways that won't work. »
Key Facts
- 1877: invention of the phonograph, the first device to record and reproduce sound
- 1879: development of the long-lasting incandescent light bulb
- 1882: opening of the first public electric power station in New York (Pearl Street Station)
- Filing of more than 1,093 patents in the United States during his lifetime
- 1876: creation of the first industrial research laboratory in Menlo Park (New Jersey)
Works & Achievements
The first device capable of recording and reproducing sound, the phonograph astonished the world when it recited 'Mary Had a Little Lamb'. Edison himself believed it would be used mainly for dictating mail, never imagining it would give birth to the global music industry.
After thousands of tests with hundreds of different materials, Edison developed a carbonized filament capable of glowing durably. This invention radically transformed daily life, replacing gas lamps in homes and making it possible to light streets, factories, and houses across the world.
Edison did not stop at inventing the light bulb: he designed the entire network needed to bring electricity into homes — dynamos, underground cables, meters, fuses, switches. Pearl Street Station was the prototype for the electrical grids that power the entire planet today.
This device allowed viewers to watch short sequences of moving images and is one of the direct precursors of cinema. Although Edison did not invent cinema single-handedly, the Kinetoscope and the Kinetograph (the associated camera) played a decisive role in the rise of this art form at the turn of the 20th century.
By radically improving Bell's telephone with a carbon powder microphone, Edison made the device genuinely usable over long distances. This improvement is one of the least known yet most impactful of his achievements, as it formed the technical foundation of telecommunications for over a century.
After ten years of tireless research, Edison developed a lightweight, sturdy, and long-lasting rechargeable battery intended for electric vehicles. The commercial success of gasoline-powered cars delayed its adoption, but this technology foreshadowed today's research into renewable energy storage.
Anecdotes
Thomas Edison had suffered from partial deafness since childhood, probably due to scarlet fever and chronic ear infections. Far from holding him back, he claimed that this disability actually helped him concentrate by shutting out ambient noise. This is the striking paradox: the man who invented the phonograph — the machine for reproducing sound — could barely hear at all.
In 1878, Edison triumphantly announced to the press that he had solved the problem of electric lighting before he had actually done so. This premature declaration caused the stock prices of gas lighting companies to plummet! It would take him more than another year of relentless experimentation to develop a lasting light bulb, in October 1879.
Edison waged a full-scale War of Currents against Nikola Tesla and George Westinghouse, who championed alternating current. To discredit this rival technology, public demonstrations of animal electrocution using alternating current were staged at Edison's laboratories, notably by Harold Brown in 1888. Despite this campaign, alternating current prevailed, as it could be transmitted far more efficiently over long distances.
The Menlo Park laboratory, opened in 1876 in New Jersey, was the world's first industrial research center. Edison employed a permanent team of scientists and technicians who sometimes worked around the clock. He declared his ambition to produce “a minor invention every ten days and a major invention every six weeks,” transforming individual creativity into a genuine organized industry.
Edison filed a total of 1,093 patents in the United States — an average of one patent per week during his most productive years. Yet some of his most celebrated inventions built on the work of collaborators such as Charles Batchelor and John Kruesi, which continues to spark debate about the true authorship of certain innovations and the meaning of collective invention in the nineteenth century.
Primary Sources
Be it known that I, Thomas Alva Edison, of Menlo Park, in the State of New Jersey, have invented an Improvement in Electric Lamps, and in the method of manufacturing the same. The object of this invention is to produce electric lamps giving light by incandescence, which lamps shall have high resistance, so as to allow of the practical subdivision of the electric light.
Just tried experiment with a diaphragm having an embossing point & held against paraffin paper moving rapidly. The indentations on paper by the speaking vibrations caused a perfect return of my speech. There is no doubt that I shall be able to store up & reproduce automatically at any future time the human voice.
I have accomplished all that I promised. The subdivision of the electric light is an accomplished fact. The same wire that brings the light into your house will also bring power and heat, and with one operation of a switch you will be able to regulate all three.
Confirmed again tonight : carbonized cotton thread filament held for over 13 continuous hours without failing. This settles the question. We now know it can be done. The problem is not whether it can be done but only how long and at what cost.
The phonograph will undoubtedly be liberally devoted to music. Letter writing and all kinds of dictation will be done with it. It will talk, tell the time, give us books. Teachers will record their lessons for the benefit of absent students. The phonograph will make everything permanent.
Key Places
Small town in Ohio where Thomas Edison was born on February 11, 1847. His preserved birthplace is now a museum tracing his childhood in a modest family.
The world's first industrial research laboratory, founded in 1876. It was here that Edison invented the phonograph and developed the incandescent light bulb, supported by a permanent team of researchers — a revolution in the way inventions were produced.
A scientific and industrial complex ten times larger than Menlo Park, built from 1887 onward and Edison's primary workplace until his death. It was here that the kinetoscope and alkaline batteries were developed; the site is now a National Historic Landmark.
The world's first electric power distribution station, inaugurated on September 4, 1882 in Manhattan. It supplied 59 customers with direct current and marked the beginning of the electrical age for the general public; it was destroyed by fire in 1890.
Edison's winter residence, where he conducted research on plants to produce domestic natural rubber during World War I. His villa and laboratory, adjoining those of his friend Henry Ford, are open to the public.