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

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          <pb o="36" file="0062" n="63" rhead="CHRISTIANI HUGENII"/>
          <p>
            <s xml:id="echoid-s846" xml:space="preserve">Cæterum penduli longitudinem, rotis quemadmodum di-
              <lb/>
              <note position="left" xlink:label="note-0062-01" xlink:href="note-0062-01a" xml:space="preserve">
                <emph style="sc">Descri-</emph>
                <lb/>
                <emph style="sc">PTIO</emph>
                <emph style="sc">Hc-</emph>
                <lb/>
                <emph style="sc">ROLOGII</emph>
              .</note>
            ximus ordinatis, eam eſſe oportet ut ſcrupula ſecunda ſin-
              <lb/>
            gulis recurſibus metiatur, quæ longitudo tripedalis eſt,
              <lb/>
            & </s>
            <s xml:id="echoid-s847" xml:space="preserve">commodè in ſchemate exhiberi non potuit. </s>
            <s xml:id="echoid-s848" xml:space="preserve">Tripedalem
              <lb/>
            dico, non alicujus reſpectu pedis qui apud Europæ gentem
              <lb/>
            hanc illamve in uſu ſit, ſed certo æternoque pedis modulo
              <lb/>
            ab ipſa hujus penduli longitudine deſumpto, quem
              <emph style="sc">Pedem</emph>
              <lb/>
              <emph style="sc">Horarium</emph>
            in poſterum appellare liceat, ad illam enim
              <lb/>
            omnium aliorum pedum menſuræ referri debent quas incor-
              <lb/>
            ruptas poſteris tradere voluerimus. </s>
            <s xml:id="echoid-s849" xml:space="preserve">Neque enim, verbi gra-
              <lb/>
            tiâ, ignorabitur unquam venturis ſæculis Pariſini pedis mo-
              <lb/>
            dus, dum conſtabit eum ad Pedem Horarium eſſe ut 864
              <lb/>
            ad 881. </s>
            <s xml:id="echoid-s850" xml:space="preserve">Sed de hujus menſuræ exactiſſima conſtitutione plu-
              <lb/>
            ribus agemus in iis quæ de Centro Oſcillationis. </s>
            <s xml:id="echoid-s851" xml:space="preserve">nunc tem-
              <lb/>
            pora converſionum in ſingulis rotis indicibusque obiter de-
              <lb/>
            ſignabimus, ut rectè omnia ad dentium ſupra deſcriptorum
              <lb/>
            numerum quadrare intelligantur.</s>
            <s xml:id="echoid-s852" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s853" xml:space="preserve">Ergo una quidem converſione rotæ C, decies circumire
              <lb/>
            apparet rotam F, ſexagies vero rotam H, & </s>
            <s xml:id="echoid-s854" xml:space="preserve">centies vicies
              <lb/>
            ſupremam K: </s>
            <s xml:id="echoid-s855" xml:space="preserve">cui quum dentes ſint quindecim, iisque
              <lb/>
            alternatim pulſentur pinnulæ L L, una converſione rotæ K
              <lb/>
            numerabuntur ictus 30, quibus reſpondent totidem itus re-
              <lb/>
            ditusque penduli V X. </s>
            <s xml:id="echoid-s856" xml:space="preserve">ideoque converſionibus 120, reſpon-
              <lb/>
            debunt oſcillationes ſimplices 3600, qui numerus eſt ſcru-
              <lb/>
            pulorum ſecundorum unam horam efficientium. </s>
            <s xml:id="echoid-s857" xml:space="preserve">Itaque ho-
              <lb/>
            ræ tempore ſemel circumit rota C, cumque ea ſimul index
              <lb/>
            ad E impoſitus, qui ſcrupula prima demonſtrat. </s>
            <s xml:id="echoid-s858" xml:space="preserve">Et quo-
              <lb/>
            niam eodem temporis ſpatio etiam rota ß, & </s>
            <s xml:id="echoid-s859" xml:space="preserve">per eam γ,
              <lb/>
            convertitur, cum tympanidio ſuo dentium ſex, ad quem
              <lb/>
            numerum duodecuplus eſt numerus dentium rotæ ζ, appa-
              <lb/>
            ret duodecim demum horis hanc circumduci, totidemque
              <lb/>
            indicem illi conjunctum in θ. </s>
            <s xml:id="echoid-s860" xml:space="preserve">Denique cum rotæ H ſexa-
              <lb/>
            ginta converſiones reſpondere oſtenderimus ſingulis conver-
              <lb/>
            ſionibus rotæ C, hinc illa, una cum affixo orbe λ, ſexagies
              <lb/>
            in ſingulas horas circumferetur, hoc eſt, ſemel unius ſcru-
              <lb/>
            puli primi tempore, ideoque partes ſexageſimæ orbiculi </s>
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