Casati, Paolo
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Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae
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ceræ leuitas ——68, vnius partis aëris leuitas
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—— 39, & vnius partis lapidis leuitas——25:
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quæ ſi in ſummam referantur, erit corporis
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dati leuitas in ſtanno liquente ——144. Qua
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propter tam in ſtanno quàm in aëre perinde
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ſe habet, ac ſi corpus homogeneum eſſet,
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cuius grauitas ſpecifica eſſet 18 3/7. </
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>Sed in aquâ etiam non dubito, quin pari
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ter ſe habeat vt corpus, cuius grauitas ſit
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18 3/7 ad aquam, cuius grauitas 5 1/3: erit enim
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corporis huius ſpecifica grauitas in aquâ +
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(13 2/21), quæ per 7 ducta dat + abſolutam corpo
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ris in aquâ grauitatem † 91 2/3. Hæc verò eſt
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planè eadem, ac ſi in ſummam conferantur
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grauitas duarum partium ferri + 73 1/3, graui
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tas vnius partis marmoris + 15 2/3, leuitas duą
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rum partium ceræ——
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2/3, leuitas vnius par
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tis aëris —— 5 1/3, & grauitas vnius partis lapi
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dis + 8 2/3: ex his enim pariter habetur graui
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tas in aquá + 91 2/3. In quocunque igitur me
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dio conſtituatur, perinde ſe habet, atque ſi
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grauitas ſpecifica in medio leuiſsimo, iņ
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quo nulla poſiti corporis pars leuis eſt, hoc
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eſt in aëre, eſſet + 18 3/7. </
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<
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>Ex his infero terrenum globum eandem
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ſemper habere ſpecificam grauitatem in quo
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cunque medio; ac proinde ſi in aquâ habet </
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