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| | (EIFFEL, G.) CAILLETET, L. & EIFFEL, G., Manomètre à air libre de 300 mètres établi à la Tour Eiffel. (Site not responding. Last check: 2007-10-19) |
 | | He collaborated with the distinguished physicist, Louis Paul Cailletet, well known for his work on the liquefaction of gases, to build a giant manometer the entire height of the tower in order to measure the pressure of up to 400 atmospheres. |
 | | In this paper given to the Académie des Sciences in 1891, Cailletet describes this remarkable instrument, explaining its advantages, describing its construction (using a steel, rather than a glass, tube on account of its size), and showing how it was arranged within the tower’s structure. |
 | | A laboratory was installed in the western leg of the tower at the manometer’s base. |
| www.polybiblio.com /elton/5117.html (221 words) |
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