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

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              eam impelleret, proindeque deorſum conuerti debe­
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              ret ab A verſus G cum à nullo retinaculo impediatur,
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              igitur ſemper reuolui poſſet tympanum ab A verſus
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              G quia ſemper perſeueraret eadem cauſa vertiginis
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              ſcilicet perpetuò conſeruaretur pendulum CD in ſitu
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              horizontali, & ideò ſemper premeret & calcaret tym­
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              pani ſuperficiem AG; quapropter tali artificio con­
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              ſequi poſſe videtur motus perpetuus prædicti tym­
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              pani. </s>
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              Cap. 2. de
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              momentis
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              grauium in
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              fluido inna­
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              tantium</s>
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              Cap. 2. dę
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              momentis
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              grauium in
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              fluido inna­
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              tantium</s>
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              Cap. 2. dę
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              momentis
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              grauium in
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              fluido inna­
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              tantium</s>
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              <s id="s.000075">Hoc, vt dixi, tantam veriſimilitudinem præſefer­
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              re videtur vt nemo ex pluribus amicis quibus hoc ar­
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              tificium communicaui fallaciam in eo latere ſuſpica­
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              tus fuerit, nihilominus licèt ego, nun quam ad praxim
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              hoc artificium reducere curauerim, non vereor tamen
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              abſolutè pronunciare motus perpetuitatem hac via
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              conſe qui non poſſe, quia nimirum perſuadere mihi
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              valeo grauia corpora moueri vnquam ſponte debere,
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              quando nè pilum quidem magis, quàm prius
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                dere</expan>
              valent atque ad centrum terræ accedere neque­
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              unt: cum itaque centrum grauitatis communis D am­
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              borum fluidorum ſemper
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                <figure id="id.010.01.019.1.jpg" xlink:href="010/01/019/1.jpg"/>
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              in eodem plano horizon­
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              tali ABCD retineatur ac
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              ſiſtatur mihi omninò im­
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              poſſibile videtur vt rotą
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              ſiue tympanum AGBF
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                uertatur</expan>
              ad partes A ver­
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              ſus G. </s>
              <s id="s.000076">Itaque licet
                <expan abbr="centrũ">centrum</expan>
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              grauitatis communis D diſtet à centro ſixo vertiginis </s>
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