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söndag 9 maj 2010

Eiffeltornet

La Tour Eiffel, 1926
Sonia Delaunay
1885-1979
.
This article traces the evolution
of the powered passenger elevator
from its initial development in the
mid-19th century to the installation
of the three separate elevator systems
in the Eiffel Tower in 1889. The design
of the Tower’s elevators involved
problems of capacity, length of rise,
and safety far greater than any
previously encountered in the field;
and the equipment that resulted was
the first capable of meeting the
conditions of vertical transportation
found in the just
emerging skyscraper.

The Author: Robert M. Vogel is
associate curator of mechanical
and civil engineering,
United States National Museum,
Smithsonian Institution.
.
Förordet från "Elevator Systems of the
Eiffel Tower", 1889 av Robeert M. Vogel

Visst har ni alla legat vakna och funderat på hur Eiffeltornets hissar fungerar? Nu har du, tack vare Project Gutenberg, möjlighet att lära allt du inte tidigare visste om Eiffeltornets vertikala transportsystem.
.
Ett par av mina andra lördagsfynd hittar du på grannbloggen.



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