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Blaise Pascal: Experiments
built 618 days ago
Unit of atmospheric pressure named in honor of Blaise Pascal, whose experiments greatly increased knowledge of the atmosphere. A pascal is the force of one newton acting on a surface area of one square meter. It is the unit of pressure designated by the International System. l00,OOO Pa= 1000mb 1 bar
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Furthur studies in hydrodynamics, hydrostatic and atmospheric pressure led Pascal to many dicoveries still in use today such as the syringe and hydrolic press. Both these inventions came after years of him experimenting with vacuum tubes. One such experiment was to ‘Take a tube which is curved at its bottom end, sealed at its top end A and open its extermity B. Another tube, a completely straight one open at both extermities M and N, is joined into the curved end of the first tube by its extermity M. Seal B, the opening of the curved end of the first tube, either with your finger or in some other manner and turn the entire apparatus upside down so that, in other words, the two tubes really only consist of one tube, being interconnected. Fill this tube with quicksilver and turn it the right way up again so that A is at the top; then place the end N in a dishfull of quicksilver. The whole of the quicksilver in the upper tube will fall down, with the result that it will all recede into the curve unless by any chance part of it ... flows through the aperture M into the tube below. But the quicksilver in the lover tube will only partially subside as part of it will also remain suspended at a heright of 26′-27′ according to the place and weather conditions in which the experiment is being carried out.
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This ban on mathematics merely served to make Blaise even more curious. On his own he experimented with geometrical figures. He invented his own names for geometrical terms because he had not been taught the standard terms. Some people believe that
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