Casati, Paolo
,
Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae
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milliaris autem cubici ex aquâ pondus iam
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inuenerim lib. 10.000000.000000. erit quar
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tus analogiæ terminus lib. 16.875000.000000
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pondus vnius milliaris cubici ex argillâ. </
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<
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>Per
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hanc igitur grauitatem duco inuentam paulò
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antè globi ſoliditatem mill. 294787.501105.
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paſſ. </
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<
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>850936000, & prouenit demùm to
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tius globi terraquei grauitas, ſi mera argilla
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effet, lib. 4.974539.081161.234545.
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000000. quæ fortaſsè paulò maior erit eâ gra
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uitate, quam Merſenne, ſtatuebas, quia in
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terræ diametro inueniendâ minùs accuratis
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rationibus vtebaris, ſi ſatis memini. </
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<
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>Ex in
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uentâ itaque globi grauitate ſi dematur con
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ſtituta aquarum grauitas, remanet ſolius ter
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ræ pondus lib. 4.973735.823673.549545.
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000000. </
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XCVI
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Terræ gra
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uitas libra
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rum nume
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ro
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probabili
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explicata.
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<
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>Cum verò grauitas hæc intrà aquam non
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tota percipiatur, ſed ſolùm iuxta exceſſum
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grauitatis ſpecificæ argillæ ſupra grauitatem
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aquæ ſpecificam, ſatis conſtat, quantùm
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minueretur terræ pondus, & quantò faciliùs
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moueretur. </
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Gal.
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<
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> Eam tamen hic intelligis, puto, ad
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hibendam circumſcriptionem, vt non toti
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globo, ſed illi tantùm parti, quæ aquis cir
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cumfunderetur, grauitatem adimerent aquæ,
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parem ponderi molis aqueæ æqualis; neque </
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