Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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Cap. 1. de
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momentis
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grauium in
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fluido inna
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tantium.</
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SVPPOSITIO I.
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<
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">Suppono primò quòd quodlibet corpus, ſiuè den
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ſum, ſiuè fluidum, ex ijs quæ globum terra-queum̨
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componunt, graue eſt, exercetque vim ſeù conatum
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ſuæ grauitatis, etiam ſi in fluido ſibi aut homogeneo,
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aut non, conſtituatur. </
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ſimis rationibus, ac experimentis confirmabitur. </
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SVPPOSITIO II.
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">Secundo loco ſuppono vim, ſeù conatum, quo flui
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da nituntur ſeſe vnire ſphæræ terraqueæ, effici per
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lineas perpendiculares ad ſuperficiem horizontis. </
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<
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hoc patet quia quodlibet graue naturali inſtinctu co
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natur ad centrum terræ accedere via breuiſſima, igi
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tur directio prædicti motus, ſeù conatus compreſſiuus
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efficietur per ſemidiametros eiuſdem terræ, hæ verò
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perpendiculares ſunt ad ſuperficiem horizontalem,
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quæ ſphæricè ipſam terram comprehendit, igitur ma
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nifeſtum eſt quòd motus ſeù conatus compreſſiuus
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omnium partium fluidi per lineas ad horizontem per
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pendiculares efficitur. </
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SVPPOSITIO III.
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<
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">Tertiò quod libet corpus graue eſt impoſſibile vt
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moueatur motu ſpontaneo, & naturali, quando ad
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telluris minimè approximari poteſt. </
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feſtum eſt quia cùm omnes partes terrenæ vt graues
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naturali inſtinctu ad terræ centrum accedere conen-</
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