Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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quieſcere videatur exercet actionem quamdam
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preſſiuam</
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tantæ energiæ quanta eſt eius grauitas; hoc
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autem facilè percipiemus ſi fingamus duos homines
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æquè validos & robuſtos qui totis viribus ſe mutuò
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impellant, vbi manifeſtum eſt quòd exiſtentibus vi
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ribus contrarijs inter ſe æqualibus, vt vna alteri noņ
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pręualeat, tunc neuter luctantium dimouebitur è ſuo
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loco, ſed ibidem quieſcet, licèt quilibet
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corũ
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vniuer
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ſam vim, & facultatem propriam exerceat impellen
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do, & repellendo ſuum antagoniſtam, non ſecùs
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do</
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aliquis impellit columnam ingentem vehemen
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ter, licèt minimè valeat eam è ſuo loco deijcere, ac
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commouere, vt nimirum motus progreſſiuus hominis
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impellentis, aut columnæ ſubſequatur; nihilominùs
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negari non poteſt motus impulſiuus muſculorum, &
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artuum hominis impellentis; nec pariter negari po
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teſt aliqua exigua & inſenſibilis flexio eiuſdem
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næ</
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, quæ ad inſtat arcus, ſeù machinæ æquali vi impul
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ſui, & flexioni reſiſtit. </
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<
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baſim, vel laminam vitream innititur concedendum
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omninò eſt effici conſtipationem quamdam partium
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ferri prementis, & vitri compreſſi, vt nimirum ali
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quantiſper eorum poroſitates
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, eò quòd
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(vt oſtenſum eſt cap. 26. de Vi percuſſionis) reperiri
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in rerum natura corpora compoſita
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nequeũt
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quæ ad
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eò dura ſint vt compreſſioni cuiuslibet corporis reſi
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ſtere valeant. </
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<
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">quod verò prædicta compreſſio vitri ab
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ingenti pondere fiat patet ex eo quòd augendo ma
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gis ac magis pondus comprimens, tandem baſis vi-</
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