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some hang out of windows above the track
Cook freom a Miniature by W
Illustration of Two wax flowers
William Pitt is on trial standing on the platform on the right
Hauksbee air pump mb-code 1193468 some hang out of windowsAir pump designed by Francis Hauksbee. Air pumps allowed experimenters to create a partial vacuum in the glass bell at the top of the device by pumping air out using the handle. Apart from proving that a vacuum was possible, the air pump gave rise to many experiments such as studying the effects of rarefied air on combustion, magnetism and sound. ca. 1709
