Casati, Paolo
,
Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae
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plum lateris primi facillimè perficiuntur abſ
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que eo, quod opus ſit multiplicatorem ſub
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multiplicando deſcribere. </
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<
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>Eſt itaque ſphæ
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ræ aqueæ diameter minor verâ paſſ. </
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<
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>535254.
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maior autem verâ paſſ. </
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<
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>535368. Quare ſta
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tui poteſt diameter vera paſſ. </
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<
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>535300 rotun
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dè, & ſemidiameter mill. 267. paſſ: 650:
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quæ ſi addatur terreni globi ſemidiametro à
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nobis ſuperiùs aſſumptæ mill. 4128 paſſ 638,
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dabit mill. 4356 paſſ. </
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>288. diſtantiam cen
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triterræ ab vniuerſi centro, quando iam aqua
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in ſphæram conglobata nihil iuuaret terræ
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motionem. </
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>Nunquam autem, puto, ab Ar
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chimede aliquis exigat machinationum ſpe
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cimen exhiberi tanto motu. </
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>Ex quo fit nun
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quam totius telluris pondus debuiſſe ab Ar
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chimede ſuſtineri, atque adeò faciliùs perfi
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ci potuiſſe illam motionem, ac vulgus exi
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ſtimet, modò locus ſuppeteret, in quo ma
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chinæ firmarentur. </
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<
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>Aqua enim dum deor
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ſum niteretur, quamuis ob minorem in ſpe
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cie grauitatem non poſſet terram ſuſtinerę,
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aliquantulum tamen repugnaret deſcenden
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ti, minueretque ſuſtinentis laborem. </
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CIV
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Archimedi
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tellurem mo
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uenti per ali
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quot millia
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ria, noņ
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fuiſſet opus
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totum pon
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dus ſustine
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re.
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Guld.
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<
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> Rectè intuliſti, quod volebam̨;
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aquâ videlicet infimam terræ portionem̨
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ſubeunte ita futurum vt minueretur terræ
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pondus, vt hinc aliqua mouendi aut ſuſtinen</
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