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

Table of figures

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              fuſiùs & accuratiùs infra oſtendetur. </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>
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              <s id="s.002177">Inquirendum modò eſt, an omnia corpora natura­
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              lia æqualibus velocitatibus, an verò inęqualibus mo­
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              ueri debeant in eodem inani ſpatio. </s>
              <s id="s.002178">& primo intuitu
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              videtur incredibile, & abſurdum æquè velocia eſſę
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              debere cùm in lationibus naturalium corporum ha­
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              benda præcipuè ratio ſit facultatum motus efficienti­
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              um quæ procul dubio à viribus grauitatum
                <expan abbr="eorumdẽ">eorumdem</expan>
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              corporum
                <expan abbr="pendẽt">pendent</expan>
              , atque hæ planè inæquales eſſe vi­
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              dentur, & propterea impetus, & velocitates, ab eis
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              pendentes erunt quoque inter ſe inæquales. </s>
              <s id="s.002179">Hoc ab
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              Ariſtotele paſſim in phyſ. & de Cœl. aſſeritur; erit igi­
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              tur operæpretium abſurditatem eius propoſitionis
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              euincere; ait ergo, grauia ſecundùm proportionem̨,
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              quam grauitates habent, moueri, pariterque leuią
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              corpora, velocitates ipſis leuitatibus proportiona­
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              les habere, & quod magis mirere, ait hoc obſeruari,
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              ac ſenſibus patere, habet enim, ſi fuerint duæ moles
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              inæquales eiuſdem corporis, nempè aeris, aſcendent
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              quidem ſursùm inæqualibus velocitatibus, & ſecun­
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              dùm proportionem quam habent earum magnitudi­
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              nes ea prorsùs ratione (inquit ipſe) qua videmus duas
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              moles inæquales terræ (ſi cætera ſint paria) maiorem
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              deſcendere velociùs, quàm minorem, ſecundùm pro­
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              portionem, quam magnitudines habent. </s>
              <s id="s.002180">Hoc autem
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              omninò falſum eſt, vt ſenſuum euidentia conſtat. </s>
              <s id="s.002181">Si
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              enim duæ pilæ ferreæ inæquales fuerint, vna ſcilicèt
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              centum vnciarum, altera vnius (ſic enim conuenien­
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              tia, & paritas ſeruatur in figuris ſphæricis, ſimilibus, </s>
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