Fabri, Honoré, Dialogi physici in quibus de motu terrae disputatur, 1665

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        <body>
          <chap>
            <p type="main">
              <s id="s.001229">
                <pb pagenum="105" xlink:href="025/01/109.jpg"/>
              aëris, cujus pars versùs A, & pars versùs I gravitet, tribus modis definiri
                <lb/>
              poteſt hujus cylindri portio, quæ versùs A, & ea; quæ versùs I gravitat;
                <lb/>
              Primo diviſa AI bifariam in F ; & ſic FK gravitat versùs I & FB versùs A.
                <lb/>
              </s>
              <s id="s.001230">Secundo diviſa bifariam BK in M, & ſic BM versùs A, & MK
                <lb/>
              versùs I. gravitat. </s>
              <s id="s.001231">Tertiò ita diviſa AI vt ſegmentum gravitans ver­
                <lb/>
              sùs A, ſit ad aliud gravitans versùs I, vt globus A ad globum I.
                <lb/>
              </s>
              <s id="s.001232">Quartus modus addi poteſt, vt ſcilicet BK ſecetur juxta dictam propor­
                <lb/>
              tio nem globorum. </s>
              <s id="s.001233">Quidquid autem ex his dicatur, ad rem noſtram perinde
                <lb/>
              eſt; quare majoris facilitatis gratia, primum modum accipio, & per punctum
                <lb/>
              F duco GFH perpendiculariter, quæ vocetur dirimens connectentem
                <lb/>
              centra, ſeu linea confinium. </s>
              <s id="s.001234">Quod dixi de AF, IF, de AN, IN dictum eſto,
                <lb/>
              item de reliquis lineis, ſeu cylindris. </s>
            </p>
            <p type="main">
              <s id="s.001235">
                <emph type="italics"/>
              Chryſocom.
                <emph.end type="italics"/>
              </s>
              <s id="s.001236"> Multis ſanè, præſertim Peripateticis, hæc tua doctrina mi­
                <lb/>
              nimè probabitur, qui juxta mentem Philoſophi docent, centrum terræ
                <lb/>
              idem eſſe cum centro Vniverſi, versùs quod omnia gravia tendunt; nega­
                <lb/>
              bunt igitur portionem aëris ſupra dirimentem GH, versùs Lunæ cen­
                <lb/>
              trum gravitare. </s>
            </p>
            <p type="main">
              <s id="s.001237">
                <emph type="italics"/>
              Antim.
                <emph.end type="italics"/>
              </s>
              <s id="s.001238"> Videtur quidem Stagirita hoc ipſum, quod dicis ad ſtruere; præ­
                <lb/>
              ſertim lib.2. de cœlo text. </s>
              <s id="s.001239">100.
                <emph type="italics"/>
              Accidit autem,
                <emph.end type="italics"/>
              inquit,
                <emph type="italics"/>
              idem terræ medium
                <lb/>
              eſſe, ac Vniverſi,
                <emph.end type="italics"/>
              ſed vt terræ centrum eſt, in id ferri per accidens; per ſe
                <lb/>
              verò ad centrum Vniverſi; de hoc tamen lib. 3. text.33. dubitare videtur;
                <lb/>
              vbi enim dixiſſet, quidquid pondus habet, ferri ad medium, ſeu versùs
                <lb/>
              centrum, ſtatim ſubdit hæc:
                <emph type="italics"/>
              vtrùm autem ad terræ medium, an Vniverſi
                <lb/>
              feratur, cùm idem medium ſit ipſorum, alia ratio eſt.
                <emph.end type="italics"/>
              Cùm autem Ariſtoteles
                <lb/>
              cœlos ſolidos poſuerit, & Sphæram ignis aëre ſuperiorem, & quintam
                <lb/>
              eſſentiam, quam animatam eſſe indicare videtur, quid mirum, cùm ele­
                <lb/>
              menta noſtra, juxta illum, vltra concavum Lunæ non extendantur, & ſuis
                <lb/>
              orbibus ſolidis ſolidi Planetæ affixi ſint, nihil vltra prorsùs gravitare aut
                <lb/>
              levitare, ac proinde gravium & levium commune centrum in Mundi &
                <lb/>
              Terræ centro collocavit. </s>
              <s id="s.001240">Si tamen cœlum eſſe fluidum putaſſet, & cœ­
                <lb/>
              leſtes Sphæras in illo communi medio moveri, & ſuos agere orbes; ſi
                <lb/>
              Cometas de novo gigni & mori in ætherea regione, nec non faculas &
                <lb/>
              maculas in Solis diſco. </s>
              <s id="s.001241">Martem propiùs ad terras nonnunquam accedere
                <lb/>
              quàm Solem; novas Stellas in Cœlo naſci; ſi demùm alia multa, quæ
                <lb/>
              jam ex obſervationibus comperta ſunt, ſciviſſet, non eſt dubium, quin alia
                <lb/>
              de Cœlo & Vniverſi conſtructione ſcripſiſſet; quanquam cum Ariſtotele
                <lb/>
              Dico centrum terræ Vniverſi centrum eſſe, circa quod cœleſtes Sphæræ
                <lb/>
              ſuos orbes agunt, versùs quod illa omnia gravia tendunt, ſublunaria ſci­
                <lb/>
              licet, quæ Ariſtoteles agnovit; ſed cùm hoc commune medium vltra
                <lb/>
              extendatur, & eadem ratione pro formatione & conſervatione militet
                <lb/>
              in aliis globis; tot pono centra, in quæ partes circumpoſitæ nituntur,
                <lb/>
              quot ſunt globi totales; gravitas enim non totius, ſed partium proprietas
                <lb/>
              eſt, cujus vi quælibet pars versùs ſuum centrum nititur, & contranititur,
                <lb/>
              ne ab eo ſeparet ut, & ſi vnquam ab eo ſeparetur, in illud denuò ſe reci­
                <lb/>
              pit. Quid vero ad conmune medium ſpectat, illius pottio verſùs illam</s>
            </p>
          </chap>
        </body>
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    </archimedes>
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