Entry
The Puy de Dôme experiment — The measurement of 19 September 1648 that made the mercury of a Torricelli tube fall from the foot to the summit of a mountain
Prescribed by Pascal in a letter of 15 November 1647 to his brother-in-law Florin Périer, performed by him early in the morning before witnesses, with two tubes, at the foot, halfway up and at the summit, then the next day at the tower of Clermont cathedral; reported to Pascal by letter of 22 September, and published in Paris at the end of the year in the Récit de la grande expérience de l’équilibre des liqueurs. Pascal repeated it in Paris, on a small scale, at the tour Saint-Jacques. (Editorial synthesis)
The Puy de Dôme experiment took place on 19 September 1648. (source: Stanford Encyclopedia of Philosophy)
The Puy de Dôme experiment took place on the Puy de Dôme. (source: Stanford Encyclopedia of Philosophy)
The Puy de Dôme experiment ended in a fall of the mercury in the tube as one climbed, the one Pascal expected. (source: Encyclopædia Universalis and BnF)
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