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Edison National |
| The
invention factory (test) |
Thomas Alva Edison |
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| Milan (Ohio) 11.February.1847- West Orange (New Jersey) 18.October.1931) | |||||
| Biographical
notes
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| The
father was Dutch and the mother American. Railway deliveryman
 to 12 years, then long telegrapher
the railway lines Americans, self-taught. In 1876
it creates the laboratory of Menlo Park, still today working.
After two years from this creation it was dedicated to the problem of
the light, already was begun
the search in Europe in this field, in the
1860
Swan was
already successful to construct to a light bulb electrical worker
having for filament a coal strip, but its duration was too much short.
Edison resolved the problem in practical way carbonating
a bamboo
filament obtained a extended
life of the lamp,
thanks also
to the improvement of the pumps to high empty that were available in
1878. Edison
realized its lamp electrical worker 21 October 1879, after
two months illuminated the roads of the city of Menlo Park.. | |||||
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