Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

Table of figures

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              præterea quia vniuerſum corpus BC, eiuſque portio
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              B ſunt ſimilia, & eiuſdem grauitatis ſpecificæ, & ſo­
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              lummodò moles inæquales
                <expan abbr="habẽt">habent</expan>
              ,
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                <figure id="id.010.01.460.1.jpg" xlink:href="010/01/460/1.jpg"/>
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              ſcilicèt eorum abſoluta pondera in­
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              æqualia ſunt, igitur ablatis om­
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              nibus impedimentis, ſcilicèt iņ
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              vacuo, eadem velocitate deſcen­
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              det integrum corpus BC atque eius
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              portio B: oſtenſa autem priùs fuere
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              duo corpora A, & B in vacuo æquè velocia, igitur cor­
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              pus BC, atque A, erunt quoque in vacuo æquè velo­
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              cia, quod erat demonſtrandum. </s>
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              Pro. 211.</s>
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              Cap. 10. de
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              æquitempo­
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              ranea natu­
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              rali veloci­
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              tate
                <expan abbr="grauiũ">grauium</expan>
              .</s>
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              Pro. 209. &
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              210.</s>
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              <s id="s.002374">Ex hiſce propoſitionibus deducitur, quod omnią
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              corpora grauia, quomodocumque inter ſe differant
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              pondere, magnitudine, & figura, apta nata ſunt ex
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              ſui natura deorsùm
                <expan abbr="deſcẽdere">deſcendere</expan>
              pari velocitate, & hoc
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              procùl dnbio contingeret, quando nil prorsùs à me­
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              dio fluido impedirentur, quod ſolummodò verifica­
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              ri poſſetin ſpatio prorsùs inani, vbi ſi feſtuca, vel
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              pluma, & ingens maſſa ferrea ab eodem termino de­
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              ſcenſum inchoarent, ſemper pari paſſu, & æquabili
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              motu excurrerent, neque aliquando ferrum
                <expan abbr="feſtucã">feſtucam</expan>
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              anticiparet. </s>
              <s id="s.002375">Propoſitio profectò admirabilis, quæ
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              paradoxum cenſeri potuerat cùm primùm à Galileo
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              coniecturalibus
                <expan abbr="tãtummodò">tantummodò</expan>
              rationibus prolata fuit,
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              quæ modò cum euidentia geometrica demonſtratą
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              fuerit, nullam anſam dubitandi relinquit. </s>
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