Von Guericke's water barometer, 1672. Fig I: details of parts; Fig II: complete barometer; Fig III: apparatus for the investigation of the weight of air; Fig IV: details of indicator. Water reached the 3rd floor of the building, but not the 4th.From Experimenta Nova ut vocantur Magdeburgica De Vacuo Spatio (New Magdeburg Experiments About the Vacuum by Otto von Guericke. (Amsterdam, 1672). | |
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