Gassendi, Pierre, De motu impresso a motore translato epistulae duae, 1642

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s id="id.000593">
                <pb pagenum="73" xlink:href="027/01/080.jpg"/>
              mam baſim; vis oppoſita ſic retundet, vt cùm in
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              primo momento ſeptem fuerint, in ſecundo ſint tan­
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              tùm quinque, in tertio tantùm tres, in primo tan­
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              tùm vnus. </s>
              <s id="id.000594">Memorià autem tenendum eſt, loqui nos
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              ſemper tantùm de eo, quod eſt perpendiculare in
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              motu; cùm id quidem, quod eſt horizontale, eſſe
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              ex ſe æquabile, aliquoties iam inculcatum ſit. </s>
              <s id="id.000595">Præ­
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              tereò ſeruari eandem proportionem, ſi graue decidat
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              non ad perpendiculum, ſed ſupra planum horizonti
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              obliquum; nam ſegniùs id quidem pro ratione obli­
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              quitatis, ſed facto nihilominùs eadem ratione incre­
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              mento, vt experiri licet globulis demiſſis per tubulos
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              vitreos, cuiuſmodi confici plureis in hunc vſum cura­
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              uimus. </s>
              <s id="id.000596">Prætereo eandem quoque ſeruari circa nu­
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              merum vibrationum, ſiue excurſuum, recurſuúmque
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              vt diximus, rerum penſilium, quatenus chordatum,
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              quibus appenduntur, longitudines ſunt vt quadra­
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              ta vibrationum: adeò vt, ſi ex quatuor chordis prima
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              ſit vnius pedis, ſecunda quatuor, tertia nouem, quar­
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              ta ſexdecim, quo tempore quartum penſile peraget
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              vnam vibrationem, tertium peragat duas, ſecundum
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              treis, & primum quatuor. </s>
              <s id="id.000597">Prætercò tandem exinde
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              eſſe, vnde tam Galileus, quàm Merſennus noſter, &
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              alij definiant quanto tempore lapis caſurus in cen­
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              trum vſque (ſi perforatam Terram concedas) ex ſuper­
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              ficie fuerit, quanto ex Luna, quanto ex Sole, quanto
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              ex ſideribus fixis. </s>
              <s id="id.000598">Supponunt quippe eandem acce­
                <lb/>
              lerationis proportionem ſeruari; tametſi ex eo ca­
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              pite non videatur eadem futura; quòd eadem vbique
                <lb/>
              impellens, attrahenſque vis futura non ſit. </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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