Amazon.com: A Sailor of Austria: In Which, Without Really Intending to, Otto Prohaska Becomes Official War Hero No. 27 of the Habsburg Empire (The Otto Prohaska Novels): 9781590131077: Biggins, John: Books
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17th century illustration of Otto von Guericke's Magdeburg hemispheres experiment, which demonstrated atmospheric pressure. The experiment, so called because it was conducted in Magdeburg, Germany, used two brass hemispheres, seen at top.