Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="039/01/023.jpg"/>
              metarum prorſus regulari, nullam ipſos reſiſtentiam pati quæ vel
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              minimum ſentiri poteſt; atque adeo neutiquam in materiam ul­
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              lam incurſare, cujus aliqua ſit vis reſiſtendi, vel proinde cujus ali­
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              qua ſit denſitas ſeu vis Inertiæ. </s>
              <s>Nam reſiſtentia Mediorum ori­
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              tur vel ab inertia materiæ fluidæ, vel a defectu lubricitatis. </s>
              <s>Quæ
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              oritur a defectu lubricitatis, admodum exigua eſt; & ſane vix
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              obſervari poteſt in Fluidis vulgo notis, niſi valde tenacia fuerint
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              adinſtar Olei & Mellis. </s>
              <s>Reſiſtentia quæ ſentitur in Aere, Aqua,
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              Hydrargyro, & hujuſmodi Fluidis non tenacibus fere tota eſt
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              prioris generis; & minui non poteſt per ulteriorem quemcunque
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              gradum ſubtilitatis, manente Fluidi denſitate vel vi inertiæ, cui
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              ſemper proportionalis eſt hæc reſiſtentia; quemadmodum clariſ­
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              ſime demonſtratum eſt ab Auctore noſtro in peregregia Reſiſten­
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              tiarum Theoria, quæ paulo nunc accuratius exponitur, hac ſe­
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              cunda vice, & per Experimenta corporum cadentium plenius
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              confirmatur. </s>
            </p>
            <p type="main">
              <s>Corpora progrediendo motum ſuum Fluido ambienti paulatim
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              communicant, & communicando amittunt, amittendo autem re­
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              tardantur. </s>
              <s>Eſt itaque retardatio motui communicato proportio­
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              nalis; motus vero communicatus, ubi datur corporis progredientis
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              velocitas, eſt ut Fluidi denſitas; ergo retardatio ſeu reſiſtentia
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              erit ut eadem Fluidi denſitas; neque ullo pacto tolli poteſt, niſi
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              a Fluido ad partes corporis poſticas recurrente reſtituatur motus
                <lb/>
              amiſſus. </s>
              <s>Hoc autem dici non poterit, niſi impreſſio Fluidi in cor­
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              pus ad partes poſticas æqualis fuerit impreſſioni corporis in Flui­
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              dum ad partes anticas, hoc eſt, niſi velocitas relativa qua Flui­
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              dum irruit in corpus a tergo, æqualis fuerit velocitati qua cor­
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              pus irruit in Fluidum, id eſt, niſi velocitas abſoluta Fluidi re­
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              currentis duplo major fuerit quam velocitas abſoluta Fluidi pro­
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              pulſi; quod fieri nequit. </s>
              <s>Nullo igitur modo tolli poteſt Flui­
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              dorum reſiſtentia, quæ oritur ab corundem denſitate & vi in­
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              ertiæ. </s>
              <s>Itaque concludendum erit; Fluidi cæleſtis nullam eſſe
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              vim inertiæ, cum nulla ſit vis reſiſtendi: nullam eſſe vim qua
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              motus communicetur, cum nulla ſit vis inertiæ: nullam eſſe vim
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              qua mutatio quælibet vel corporibus ſingulis vel pluribus indu­
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              catur, cum nulla ſit vis qua motus communicetur: nullam eſſe
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              omnino efficaciam, cum nulla ſit facultas mutationem quamlibet
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              inducendi. </s>
              <s>Quidni ergo hanc Hypotheſin, quæ fundamento
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              plane deſtituitur, quæque naturæ rerum explicandæ ne minimum
                <lb/>
              quidem inſervit, ineptiſſimam vocare liceat & Philoſopho pror-</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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