Biografia thomas alva edison en ingles
1.- Thomas Alva Edison was the most prolific inventor in American history.
2.- Edison was born in 1847 in the canal town of Milan, Ohio. He wasthe last of seven children.
3.- In 1859 Edison began working on a local branch of the Grand Trunk Railroad, selling newspapers, magazines, and candy. At one point heprinted a newspaper on the train, and he also conducted chemical experiments in a baggage-car laboratory.
4.- From 1863 to 1867 he traveled through the Midwest asan itinerant telegrapher. During these years he read widely, studied and experimented with telegraph technology, and generally acquainted himself with electricalscience.
5.- In 1868 Edison became an independent inventor in Boston. Moving to New York the next year, he undertook inventive work for major telegraph companies.6.-Edison soon acquired a reputation as a first-rank inventor. His work included stock tickers, fire alarms, methods of sending simultaneous messages on one wire, and anelectrochemical telegraph to send messages by automatic machinery.
7.-The crowning achievement of this period was the quadruplex telegraph, which sent two messagessimultaneously in each direction on one wire.
8.- He amassed a record 1,093 patents covering key innovations and minor improvements in wide range of fields, includingtelecommunications, electric power, sound recording, motion pictures, primary and storage batteries, and mining and cement technology.
9.- By the time of his death in1931, Edison had received 1,093 U.S. patents, a total still untouched by any other inventor. Even more important, he created a model for modern industrial research.
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