FREE ESSAY ON THOMAS EDISON

THOMAS EDISON

Edison was born in the village of Milan, Ohio, on Feb. 11, 1847, and his family later
moved to Port Huron, Mich. In his early life as a kid he played jokes on people and got
into trouble. One time he set his father's barn on fire because he wanted to see what
fire look like when it burned. His schooling was three months long because he quit when
too many people made fun of him. At the age of seven his mother taught him, and he loved
to read books. The book Schoool of Natural Philosophy sparked his likeing for science
and, soon after he set up his first lab.
At age 12 his father could no longer buy supplies for his lab so he became a train-boy,
selling magazines and food on the Grand Trunk Railroad. He spent all he earned on books
and supplies for his laboratory.At this time he stoped sleeping and only took cat-naps so
he could work on experiments at night in the bagage car. An accident at this time led to
a loss of hearing about 50%. Two things which contributed to loss of his hearing was a
conductor pulling on his ear and, a conductor clapping his ears for setting the bagage
car on fire it was only an accident. Soon after he left this job.
A station agent taught him telegraph code and procedures, and at age 15, Edison became
manager of a telegraph office. His first inventions were the transmitter and receiver for
the automatic telegraph. At 21, Edison made improvements on the stock ticker for printing
stock-exchange quotations. With the $40,000 he was paid for the improvements in tickers,
he established real laboratory in Newark, N.J. Deciding to give up manufacturing, he
moved the laboratory to Menlo Park, N.J., where he was in charge of groups of employees
working on various projects.
In 1878, Edison started work on an electric lamp and looked for things that could be
electrically heated to incandescence in a vacuum. At first he used platinum wire in glass
bulbs at 10 volts.He realized, however, that independent lamp control would be necessary
for home and office use. He then developed a three-wire system with a supply of 220
volts. Each lamp operated at 110 volts, but the higher voltage required a new substance
other than that of platinum. Edison conducted an extensive search for another filament
material, on Oct. 21, 1879, he showed a lamp useing a carbonized cotton thread that
glowed for 40 hours.
Edison made the first large power station on Pearl Street in New York City in 1882; its
steam-driven generators of 900 horsepower gave enough power for 7,200 lamps. The success
of this station led to the construction of many other power stations. Edison founded The
Edison Electric Light Company in 1878, which eventually merged with other companies into
the General Electric Company in 1892, one of the largest U.S. manufacturers.It still is
around today. 
During his experiments on the light bulb, Edison saw a flow of electricity from a hot
filament across a vacuum to a metal wire. This is known as thermionic emission.Which he
did the improvments on. 
Edison also invented the phonograph in 1877, the invention he was most proud of. It used
tinfoil and wax cylinders to record the sound. His introduction of flexible celluloid
film and his invention of the movie projector aided the development of motion pictures.
His other inventions are the alkaline storage battery, a magnetic process to separate
iron ore, and the carbon microphone. Later on in life he bacame close friends with henry
Ford. He helped Ford on the battery and other things on the Ford Modle T.Edison injoyed
his later years and got a home in Florida which he whent to alot. He died in West Orange,
N.J., on Oct. 18, 1931, he had patented over 1,000 inventions. Edison was one of the best
inventors of of his time and ours. He is most famous for his development of the first
commercially practical incandescent lamp in1879. One of his greatest contributions,
however, was the of the world's first central electric light-power station.Other great
inventions were phonograph, motion picture camera,microphone, and the light bulb.