Cavalieri, Buonaventura, Geometria indivisibilibvs continvorvm : noua quadam ratione promota

Table of handwritten notes

< >
< >
page |< < of 569 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div7" type="section" level="1" n="7">
          <p style="it">
            <s xml:id="echoid-s73" xml:space="preserve">
              <pb file="0014" n="14"/>
            eorum g quadrata inuicem habebunt. </s>
            <s xml:id="echoid-s74" xml:space="preserve">His verò perſpectis cum
              <lb/>
              <note symbol="g" position="left" xlink:label="note-0014-01" xlink:href="note-0014-01a" xml:space="preserve">_Cor. 1._
                <lb/>
              _11.l.3._</note>
            ad planarum, ac ſolidarum figurarum quoq; </s>
            <s xml:id="echoid-s75" xml:space="preserve">grauitatum centra
              <lb/>
            reſpicerem, ſimilemque varietatem nactus eſſem, adhuc auge-
              <lb/>
            batur admiratio; </s>
            <s xml:id="echoid-s76" xml:space="preserve">in cono enim centrum grauitatis eſt in axe per
              <lb/>
              <note symbol="h" position="left" xlink:label="note-0014-02" xlink:href="note-0014-02a" xml:space="preserve">_Luc. Val_
                <lb/>
              _39 l.1_</note>
            quartam partem diſtant à baſi, in triangulo verò ipſum gignen-
              <lb/>
              <note symbol="i" position="left" xlink:label="note-0014-03" xlink:href="note-0014-03a" xml:space="preserve">_Idem 19._
                <lb/>
              _l.1._</note>
            te eſt in eodem axæ, dictans ab eadem per tertiam partem eiuſ-
              <lb/>
            dem axis. </s>
            <s xml:id="echoid-s77" xml:space="preserve">Similiter in conoide parabolico illiud ect in axe per
              <lb/>
              <note symbol="k" position="left" xlink:label="note-0014-04" xlink:href="note-0014-04a" xml:space="preserve">_Idë 41._
                <lb/>
              _l.2._</note>
            tertiam partem diſtans à baſi, in parabola verò ipſum generante
              <lb/>
              <note symbol="l" position="left" xlink:label="note-0014-05" xlink:href="note-0014-05a" xml:space="preserve">_Arch. 8._
                <lb/>
              _Se. ęquep_</note>
            per duas tertias eiuſdem axis remouetur ab ipſabaſi. </s>
            <s xml:id="echoid-s78" xml:space="preserve">cum er-
              <lb/>
            go talem varietatem in plurimis alijs ſiguris ſæpius, ac ſæpè fuiſsẽ
              <lb/>
            meditatus, vbi prius ex. </s>
            <s xml:id="echoid-s79" xml:space="preserve">g. </s>
            <s xml:id="echoid-s80" xml:space="preserve">cylindrum ex indefinitis numero pa-
              <lb/>
            rallelogrammis, conum verò in eadem baſi, & </s>
            <s xml:id="echoid-s81" xml:space="preserve">circa eundẽ axim
              <lb/>
            cum cylindro conſtitutum, ex indefinitis numero triangulis per
              <lb/>
            axem tranſeuntibus veluti compactum effingens, habita dictorũ
              <lb/>
            planorum mutua ratione, illicò & </s>
            <s xml:id="echoid-s82" xml:space="preserve">ipſorum ſolidor um ab ipſis ge-
              <lb/>
            nitorum emergere rationem exiſtimabam, cum iam planè conſta-
              <lb/>
            ret planorum rationi genitorum ab ijſdem ſolidorum rationem
              <lb/>
            minimè concordare, figurarum menſuram tali ratione inquiren-
              <lb/>
            temoleum, & </s>
            <s xml:id="echoid-s83" xml:space="preserve">operam perdere, ac ex inanibus paleis trituram fa-
              <lb/>
            cturum eſſe, mihi iure cenſendum videbatur. </s>
            <s xml:id="echoid-s84" xml:space="preserve">Verum paulò pro-
              <lb/>
            fundius rem contemplatus in hanc tandem deueni ſententiam,
              <lb/>
            nempè ad rem noſtram lineas, & </s>
            <s xml:id="echoid-s85" xml:space="preserve">plana, non ad inuicem coinci-
              <lb/>
            dentia, ſed æquidiſtantia aſſumenda eſſe; </s>
            <s xml:id="echoid-s86" xml:space="preserve">ſic enim in plurimis ra-
              <lb/>
            tione inueſtigata reperij tum corporum proportioni ipſorum plano-
              <lb/>
            rum, tum planorum proportiom ipſarum linearum proportionem
              <lb/>
            (ſi eo modo ſumantur, quo lib. </s>
            <s xml:id="echoid-s87" xml:space="preserve">2. </s>
            <s xml:id="echoid-s88" xml:space="preserve">explicatur) ad amuſſim in
              <lb/>
              <note symbol="m" position="left" xlink:label="note-0014-06" xlink:href="note-0014-06a" xml:space="preserve">_Def. I._
                <lb/>
              _& 2.l.2._</note>
            omnibus reſpondere. </s>
            <s xml:id="echoid-s89" xml:space="preserve">Cylindrumigitur, & </s>
            <s xml:id="echoid-s90" xml:space="preserve">conum, iam dictos
              <lb/>
            non amplius per axem ſed æquidiſt anter baſiceu ſectos cõtempla-
              <lb/>
            tus, eandem ſanè rationem habere illa comperij, quæ lib. </s>
            <s xml:id="echoid-s91" xml:space="preserve">2. </s>
            <s xml:id="echoid-s92" xml:space="preserve">voco
              <lb/>
            omnia plana cylindri ad omnia plana coni, regula communi
              <lb/>
              <note symbol="n" position="left" xlink:label="note-0014-07" xlink:href="note-0014-07a" xml:space="preserve">_Def. 1. &_
                <lb/>
              _2.l.2._</note>
            baſi (nempè circulorum congeriem, quæ intra cylindrũ, & </s>
            <s xml:id="echoid-s93" xml:space="preserve">conum,
              <lb/>
            veluti vefligia plani à b aſi ad oppoſitam baſim continuò illi æqui-
              <lb/>
              <note symbol="o" position="left" xlink:label="note-0014-08" xlink:href="note-0014-08a" xml:space="preserve">_Def. 1. &_
                <lb/>
              _2.l.2._</note>
            diſtanter fluentis quodammodo relinqui intelliguntur) ei, quam
              <lb/>
            babet cylindrus ad conum. </s>
            <s xml:id="echoid-s94" xml:space="preserve">Optimam ergo methodum figurarum
              <lb/>
            ſcrutanda menſuræ indicaui prius line arum pro planis, & </s>
            <s xml:id="echoid-s95" xml:space="preserve">plano-
              <lb/>
            rum pro ſolidis rationes indagare, vt illicò ipſarum </s>
          </p>
        </div>
      </text>
    </echo>