| Railway
Boy 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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