Casati, Paolo, Terra machinis mota : dissertationes geometricae, mechanicae physicae hydrostaticae

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    <archimedes>
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              <s>
                <pb xlink:href="018/01/193.jpg" pagenum="179"/>
              maiorem leuitatem in aëre communi quàm
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              vt obſiſtat quatuor granorum grauitati? </s>
              <s>Ignis
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              enim naturam in motum maximè pronam
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              ſi attentiùs conſideremus, nihilquè igne le­
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              uius nobis innotuiſſe animaduertamus, cum
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              in tertiâ potiſsimum & ſupremâ aëris regio­
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              ne ignitæ impreſsiones Meteorologicæ ac­
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              cendantur, nemo facilè negauerit ignis leui­
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              tatem ſaltem tantam eſſe, quæ vincat me­
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              dullæ ſambuceæ grauitatem, datâ molis æ­
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              qualitate; nihil quippe medullâ ſambuceâ
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              leuius, hoc eſt minùs graue, potui adhuc
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              deprehendere. </s>
              <s>Medullam enim ſambuci
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              vtcunque viridis cylindricam expendi, cuius
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              altitudo erat digitorum 2 2/3 & baſis diameter
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              digiti 1/4, fuitque pondus gran. 3: æqualis au­
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              tem cylindri cerei pondus fuit gran. 72. At­
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              qui ſi ignis tanta ſit leuitas ſurſum, quantą
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              eſt medullæ ſambuceæ grauitas deorſum̨,
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              multò maior eſt ignis leuitas quàm aeris igni­
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              ti in Æolipilâ. </s>
              <s>Nam quia baſis diameter
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              eſt digiti 1/4, & altitudo dig. </s>
              <s>2 2/3, ſi diametri
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              quadratum 1/16 ducatur in altitudinem
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              /3, na­
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              betur parallelepipedum digiti ſolidi 1/6: hoc
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              autem parallelepipedum eſt ad cylindrum
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              in Ratione baſium, quadratum autem dia­
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              metri ad circulum habet maiorem rationem </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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