Blaise Pascal · Mathematics

The Machine and the Weight of the Void

Pascal the physicist and engineer: the <em>Pascaline</em> calculating machine; the great Puy-de-D&ocirc;me experiment proving that the air has weight and that the vacuum can exist, against the ancient dogma that &lsquo;nature abhors a vacuum&rsquo;; and Pascal&rsquo;s law of pressure in fluids.

What you'll be able to recall

You learned that Pascal built the Pascaline, that the Puy-de-D&ocirc;me experiment showed the mercury column falls at altitude because the air has weight (not because nature abhors a vacuum), and that Pascal&rsquo;s law states pressure in a confined fluid spreads undiminished in every direction. Explain these ideas an…

Leads to Ren&eacute; Descartes.

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