Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 1: Opera mechanica

Table of Notes

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          <pb o="258" file="0336" n="364" rhead="MACHINARUM"/>
          <p>
            <s xml:id="echoid-s5540" xml:space="preserve">Quantum hoc proſit, experitur in ipſius tranſlatione, nam
              <lb/>
            tum crucis fila laxari queunt curando, ut ſupra furcam K, & </s>
            <s xml:id="echoid-s5541" xml:space="preserve">
              <lb/>
            brachium exiguum curvatum R, deſcendat Teleſcopium,
              <lb/>
            ne quidem thecam ligneam aperiendo.</s>
            <s xml:id="echoid-s5542" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5543" xml:space="preserve">Ne oleum pyxide G contentum ex hac defluat, dum Li-
              <lb/>
            bella in itineribus confertur, pyxidis hujus foramen ipſo
              <lb/>
            pondere incluſo claudi poteſt; </s>
            <s xml:id="echoid-s5544" xml:space="preserve">curabitur ad hoc, ut pondus
              <lb/>
            illud deſuper planum admodum ſit, & </s>
            <s xml:id="echoid-s5545" xml:space="preserve">detineatur juxta
              <lb/>
            pyxidis operculum ope annuli cochleati S.</s>
            <s xml:id="echoid-s5546" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s5547" xml:space="preserve">Tubus N, illum in magno repræſentat, cui in interiori
              <lb/>
              <note position="left" xlink:label="note-0336-01" xlink:href="note-0336-01a" xml:space="preserve">TAB.XXIX.
                <lb/>
              Fig. 3.</note>
            Teleſcopii parte Horizontale filum cohæret, continet ela-
              <lb/>
            ſtrum O P furcæ Q annexum, cui ſericum filum cera affi-
              <lb/>
            gitur; </s>
            <s xml:id="echoid-s5548" xml:space="preserve">hoc elaſtrum furcam ad fruſtum bracteæ T trahit,
              <lb/>
            quod ingreditur cochlea, quæ reſpondet foramini H in tubo
              <lb/>
            Teleſcopii, quo dato foramine etiam modice tubus N verti
              <lb/>
            poteſt, ut filum exacte fiat Horizontale, de quo judicatur
              <lb/>
            per Teleſcopium videndo.</s>
            <s xml:id="echoid-s5549" xml:space="preserve"/>
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        <div xml:id="echoid-div450" type="section" level="1" n="186">
          <head xml:id="echoid-head236" style="it" xml:space="preserve">Rectificationis Libellæ Demonſtratio.</head>
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            <s xml:id="echoid-s5550" xml:space="preserve">Rectificationis requiſitum primum fuit hoc; </s>
            <s xml:id="echoid-s5551" xml:space="preserve">ut centrum
              <lb/>
            gravitatis ſuſpenſæ crucis in recta linea per puncta, qui-
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            bus fila brachiis annectuntur, transeunte daretur. </s>
            <s xml:id="echoid-s5552" xml:space="preserve">Ut hujus
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            præparationis neceſſitas concipiatur, ſciri oportet, non ſufficere
              <lb/>
            ſi Teleſcopium ex utroque annulo ſucceſſive ſuſpenſum ad
              <lb/>
            idem objecti punctum dirigatur, hoc enim fieri poteſt, licet
              <lb/>
            objecti punctum multum infra, aut ſupra Horizontale pla-
              <lb/>
            num inveniatur. </s>
            <s xml:id="echoid-s5553" xml:space="preserve">Sit A B Cylindri Teleſcopiani axis; </s>
            <s xml:id="echoid-s5554" xml:space="preserve">ſit
              <lb/>
              <note position="left" xlink:label="note-0336-02" xlink:href="note-0336-02a" xml:space="preserve">TAB.XXIX.
                <lb/>
              Fig. 4.</note>
            C I ſuſpenſionis, aut nexuum filorum linea, quarum linea-
              <lb/>
            rum longitudinum hic non habetur ratio, quoniam, cujus-
              <lb/>
            cunque magnitudinis Teleſcopium ſit, nihil hoc ad ſuſpen-
              <lb/>
            ſi corporis ſitum conferre, notum eſt: </s>
            <s xml:id="echoid-s5555" xml:space="preserve">ponimus A B, C I
              <lb/>
            ſe mutuo ad angulos perfectè rectos ſecare in puncto H. </s>
            <s xml:id="echoid-s5556" xml:space="preserve">De-
              <lb/>
            ſuper centrum gravitatis crucis in E, ponatur in axe A B,
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            magis tamen verſus B, quam punctum H; </s>
            <s xml:id="echoid-s5557" xml:space="preserve">Cruce itaque ſu-
              <lb/>
            ſpenſa in C, linea quæ a C ad centrum terræ tendit erit C </s>
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