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

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              in YD, in ratione compoſita, ex ratione Quadrati ab ad differentiam
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              Quadrati BD & ex permutata Quadrati ſub chorda arcus EY ad differen­
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              tiam Quadrati ſub chorda arcus ED, vel ex ratione Quadrati LB, ad Qua­
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              dratum bD, plus bis rectangulum ſub LbD, ſeu ad rectangulum ſub bD,
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              & aD, & Lc. ad cE &c. </s>
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            <p type="main">
              <s id="s.001337">
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              Auguſtin.
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              <s id="s.001338"> Non intelligo hæc Geometrica, tam enim jejunè illa pro­
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              ponis; cùm tamèn abſtruſas demonſtrationes contineant; vix ea curtim &
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              raptim indicata potiùs quàm expoſita quiſquam mente capiat. </s>
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            <p type="main">
              <s id="s.001339">
                <emph type="italics"/>
              Antim.
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              <s id="s.001340"> Suppono ea, quæ jam aliàs demonſtravi, ſcilicet circulum ſub
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              radio, æquali chordæ, æqualem eſſe portioni ſuperficiei Sphæræ, quam
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              metitur, vel gignit arcus, cujus eſt chorda, v. g. ſi accipiatur circulus ſub
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              radio æquali chordæ ſubtenſæ arcui EY, erit æqualis portioni ſuperficiei
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              Sphæræ,
                <expan abbr="quã">quam</expan>
              metitur, vel gignit arcus EY revolutus ſcilicet circa axem EC,
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              hinc chorda ſubtenſa arcui ED eſt æqualis radio circuli æqualis ſuperficiei
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              Hemiſphærij; demonſtratum eſt item, portionem ſuperficiei genitæ ab arcu
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              YE eſſe ad genitam ab arcu YD, vt Ec, ad cL; præterea lumina inci­
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              dentia, per parallelas, ſunt vt baſes, ſi conſiderentur in ſe; ſi verò conſi­
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              derentur in ſubjecto, id eſt in diverſa ſuperficie, cui incidunt, ſi ſint
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              æqualia lumina, erunt in ſubjecto, vt ſuperficies illuſtratæ permutando; v.
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              g. ſi eadem vis, ſeu quantitas luminis, (ſic enim vocare liceat) incidat in
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              ſuperficiem duplam alterius, erit lumen, vel luminis intenſio ſuperficiei
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              duplæ ad aliam, vt 1.ad 2. Si verò ſuperficies ſunt æquales, ſed lumina inæ­
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              qualia, erunt intenſiones, vt ipſa lumina; ſi demum & ſuperficies inæqua­
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              les ſunt, erunt intenſiones in ratione compoſita luminum & ſuperficierum
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              permutando; jam applica. </s>
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            <p type="main">
              <s id="s.001341">
                <emph type="italics"/>
              Auguſtin.
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              <s id="s.001342"> Satis eſt, probe intelligo; inde autem conſtat, quod jam
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              ſubindicare viſus es, vim Solis potiſſimum effectum habere circa Polum
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              Hemiſphærij Lunaris ab eo illuſtrati, v. g. circa E, intra arcum Zy, vltra
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              verò versùs B & D parum valet; hinc etiam ſimilis ratio ducitur, cur Sol
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              Oriens vel Occidens, terræ ſuperficiem parum afficiat, plus verò de meri­
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              die, plus demum, quò Sol propiùs ad punctum verticale accedit; hinc vis
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              debilior radij obliqui, non tantùm à radij reflexi carentia petenda eſt; vt
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              aliqui faciunt. </s>
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            <p type="main">
              <s id="s.001343">
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              Chryſocom.
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              </s>
              <s id="s.001344"> Ex iis, quæ dicis, Antime, ſequeretur Lunaris diſci, vel
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              Hemiſphærij extremitates, minùs ſplendidas & illuſtratas videri; nul­
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              lum tamen ego diſcrimen obſervo; oculis autem meis magis credo, quàm
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              veſtris demonſtrationibus. </s>
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            <p type="main">
              <s id="s.001345">
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              Antim.
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              <s id="s.001346"> Demonſtratio, Chryſocome, nunquam fallit, nec fallere poteſt
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              ſtatue igitur oculum in A; Lunam, licèt Sphærica ſit, vt planum diſcum
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              aſpicis, cujus diameter eſt BD, paulò minor; & Ba, ſegmentum ſcilicet
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              apparentis Semidiametri, vides ſub angulo BAa; aL verò ſub angulo
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              aAL; ſed ob parvitatem anguli BAL, qui vix eſt 16.minutorum, anguli
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              ſub quibus videntur ſegmenta aB, aL, ſunt vt ipſa ſegmenta; igitur tanta
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              lux videtur in aB quanta in aL; quia in eadem ratione videtur contra­
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              ctior, in qua primùm incidit diſtractior; vt enim rem in plano tantùm, </s>
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