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Two hemispheres which can be exactly fitted on each other; their exact adjustment is further assisted by a projecting internal rim, with is smeared with lard.
Keywordslard, Vacuum, Air-Pump, magdeburg hemisphere
A. Privat Deschanel Elementary Treatise on Natural Philosophy Part I. Mechanics, Hydrostatics, and Pneumatics (New York: D. Appleton and Company, 1884) 187
1182×2400, 662.1 KiB
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