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

Table of figures

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              <s id="s.001119">
                <pb pagenum="217" xlink:href="010/01/225.jpg"/>
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              libras exinanita fiſtula æquè comprimeretur ſubie­
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              ctus digitus à pondere totius cylindri aerei SA
                <expan abbr="triũ">trium</expan>
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              librarum vnà cum duabus vncijs vitri AC, cùmque
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              hoc ſit falſum; fiſtula enim exinanita duas vncias ſo­
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              lummodò pendit, non ergo ſuprema
                <expan abbr="colũmna">columna</expan>
              aerea
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              SA fiſtulam, & proindè digitum ſubiectum compri­
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              mit. </s>
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                <expan abbr="Cõtiã">Contram</expan>
              ſupe­
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              rius
                <expan abbr="expoſitã">expoſitam</expan>
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                <expan abbr="doctrinã">doctrinam</expan>
              de­
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              nuo aduer­
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              ſarius inſur­
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              git,</s>
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              Cap. 5. de ae­
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              ris grauitate
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              æquilibrio,
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              ſtructura, &
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              vi elaterią
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              eius.</s>
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              PROP. CIV.
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            <p type="main">
              <s id="s.001123">
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              Fiſtula exinanita, licèt grauetur à cylindro aereo
                <expan abbr="incumbẽ-te">incumben­
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                te</expan>
              non minus, ac quando extante mercurio repletur,
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              debet tamen in primo caſu ſubiectus digitus vi­
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              tri tantum pondus percipere, in ſecundo ve­
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              rò præterea à pondere æquali mercurio
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              ſuſpenſo grauabitur.
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              <s id="s.001124">HVic difficultati
                <expan abbr="reſpõdetur">reſpondetur</expan>
              , quòd, vt multotiès
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              inſinuatum eſt, nulla alia de cauſa fluida cor­
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              pora circa tellurem ſphæricè
                <expan abbr="cõtornantur">contornantur</expan>
              , niſi prop­
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              tèr eorum æquilibrium, ſcilicet quia omnes eius par­
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              tes æquali niſu vim faciunt tendendo deorsùm, &
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              poſtquam à ſoliditate terræ ſubiectæ eius progreſ­
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              ſus deorsùm impeditur niſu reflexo veluti in ſiphone
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              viciſſim ſe mutuo
                <expan abbr="impellũt">impellunt</expan>
              quoque partes fluidi, vel
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              ſolidi eleuatæ ſursùm, itaque in caſu noſtro, concipi
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              debet nedùm columna aerea SAC, ſed etiam alia ei
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              æqualis aerea columna SG, quæ infernè per EC re­
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              flectatur, & ſursùm impellat digitum ſuſtentantem
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              vitrum æquali niſu, ac ipſa ſupernè comprimitur à </s>
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