Senin, 16 September 2013
However, Pascal went even further to test the mechanical theory. If, as
suspected by mechanical philosophers like Torricelli and Pascal, air had
lateral weight, the weight of the air would be less at higher
altitudes. Therefore, Pascal wrote to his brother-in-law, Florin Perier,
who lived near a mountain called the Puy de Dome, asking him to perform
a crucial experiment. Perier was to take a barometer up the Puy de Dome
and make measurements along the way of the height of the column of
mercury. He was then to compare it to measurements taken at the foot of
the mountain to see if those measurements taken higher up were in fact
smaller. In September 1648, Perier carefully and meticulously carried
out the experiment, and found that Pascal's predictions had been
correct. The mercury barometer stood lower the higher one went.[6]
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