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

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              <pb o="49" file="0079" n="82" rhead="HOROLOG. OSCILLATOR."/>
            ves in anchoris ſtant omnium optima videtur, quod, abs-
              <lb/>
              <note position="right" xlink:label="note-0079-01" xlink:href="note-0079-01a" xml:space="preserve">
                <emph style="sc">Descri-</emph>
                <lb/>
                <emph style="sc">PTIO</emph>
                <emph style="sc">Ho-</emph>
                <lb/>
                <emph style="sc">ROLOGII</emph>
              .</note>
            que inſtrumentorum ope, ſolis oculis eæ obſervationes per-
              <lb/>
            agantur.</s>
            <s xml:id="echoid-s1058" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1059" xml:space="preserve">Pendulum vero unciarum novem longitudine inerat horolo-
              <lb/>
            giis hiſce, pondere ſemiſſis. </s>
            <s xml:id="echoid-s1060" xml:space="preserve">Rotæ ponderum attractu cir-
              <lb/>
            cumagebantur, eademque cum illis theca incluſæ erant quater-
              <lb/>
            num pedum longitudine. </s>
            <s xml:id="echoid-s1061" xml:space="preserve">In ima theca plumbum inſuper
              <lb/>
            centum atque amplius librarum additum erat, quo melius
              <lb/>
            perpendicularem ſitum ſuſpenſa in navi machina ſervaret.</s>
            <s xml:id="echoid-s1062" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1063" xml:space="preserve">Quanquam autem æquabilis admodum ſibique conſtans
              <lb/>
            automati motus per hæc experimenta comperiebatur, tamen
              <lb/>
            alia quoque ratione ulterius illud perficere aggreſſi ſumus,
              <lb/>
            quæ erat hujuſmodi. </s>
            <s xml:id="echoid-s1064" xml:space="preserve">Rotæ illi quæ ſerratos dentes habet,
              <lb/>
            penduloque proxima eſt, pondus exiguum ex catenula affa-
              <lb/>
            bre conſtructa appendimus, quo ſola ipſa moveretur, reli-
              <lb/>
            qua omni machina nihil aliud agente quam ut ſingulis ſemi-
              <lb/>
            ſcrupulis horariis plumbum illud exiguum ad priorem alti-
              <lb/>
            tudinem reſtitueret; </s>
            <s xml:id="echoid-s1065" xml:space="preserve">eadem fere ratione atque in conſtructio-
              <lb/>
            ne horologii ſuperius expoſita videre eſt, ubi pondus al-
              <lb/>
            tero fune attollitur, dum altero gravitatem ſuam horolo-
              <lb/>
            gii motui impertit. </s>
            <s xml:id="echoid-s1066" xml:space="preserve">Quibus ita conſtructis, cum veluti ad
              <lb/>
            unicam rotam omnia eſſent redacta, major adhuc quam an-
              <lb/>
            tea apparuit horologiorum æqualitas, illudque accidit me-
              <lb/>
            moratu dignum, quod cum duo ad hanc formam conſtructa
              <lb/>
            ex eodem tigno ſuſpendiſſemus, tignum vero fulcris duobus
              <lb/>
            impoſitum eſſet; </s>
            <s xml:id="echoid-s1067" xml:space="preserve">motus penduli utriuſque ita ictibus adver-
              <lb/>
            ſis inter ſe conſenſere, ut nunquam inde vel minimum rece-
              <lb/>
            derent, ſed utriuſque ſonus una ſemper exaudiretur: </s>
            <s xml:id="echoid-s1068" xml:space="preserve">imo
              <lb/>
            ſi data opera perturbaretur concordia illa, ſemetipſam brevi
              <lb/>
            tempore reduceret. </s>
            <s xml:id="echoid-s1069" xml:space="preserve">Miratus aliquandiu rem adeo inſolitam,
              <lb/>
            inveni denique, inſtituto diligenti examine, à motu ti-
              <lb/>
            gni ipſius, licet haudquaquam ſenſibili, cauſam petendam
              <lb/>
            eſſe. </s>
            <s xml:id="echoid-s1070" xml:space="preserve">Nempe pendulorum reciprocationes horologiis, quanto-
              <lb/>
            libet pondere gravatis, motum aliquem communicare; </s>
            <s xml:id="echoid-s1071" xml:space="preserve">hunc
              <lb/>
            vero motum, tigno ipſi impreſſum, neceſſario efficere ut
              <lb/>
            ſi aliter quam contrariis ad unguem ictibus pendulum </s>
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