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

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              <pb o="38" file="0064" n="65" rhead="CHRISTIANI HUGENII"/>
            curatiusque fabrefactum automaton arguet. </s>
            <s xml:id="echoid-s882" xml:space="preserve">In noſtris, quæ
              <lb/>
              <note position="left" xlink:label="note-0064-01" xlink:href="note-0064-01a" 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>
            optima hactenus habemus, ad ſex libras redactum eſt, po-
              <lb/>
            ſita nimirum orbiculi D diametro pollicari fere; </s>
            <s xml:id="echoid-s883" xml:space="preserve">uti exhibi-
              <lb/>
            ta fuit; </s>
            <s xml:id="echoid-s884" xml:space="preserve">item perpendiculi pondere trilibri, ac totidem pe-
              <lb/>
            dum longitudine. </s>
            <s xml:id="echoid-s885" xml:space="preserve">Quæ longitudo, ut hoc etiam admonea-
              <lb/>
            mus, trans capſam horologii dependet, oblongo foramine
              <lb/>
            perviam, quantum oſcillationibus peragendis neceſſe eſt,
              <lb/>
            Ipſum vero horologium, ad hominis altitudinem ſuſpenſum,
              <lb/>
            horis 30 moveri perſeverat.</s>
            <s xml:id="echoid-s886" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s887" xml:space="preserve">Supereſt nunc forma lamellarum deſcribenda inter quas
              <lb/>
            perpendiculum affigi diximus, quarumque ad æquabilem
              <lb/>
            horologio motum præſtandum vel præcipua eſt opera. </s>
            <s xml:id="echoid-s888" xml:space="preserve">Abs-
              <lb/>
            que his enim Penduli ſimplicis oſcillationes (etſi nonnullis
              <lb/>
            aliter viſum eſt) non erunt æque diuturnæ, ſed brevioris
              <lb/>
            temporis eæ quæ per minores arcus incedent; </s>
            <s xml:id="echoid-s889" xml:space="preserve">idque primùm
              <lb/>
            experimento hujusmodi facile deprehenditur. </s>
            <s xml:id="echoid-s890" xml:space="preserve">Si enim fila
              <lb/>
            accipiantur ejusdem longitudinis duo, paribusque in parte
              <lb/>
            ima ponderibus religatis, utrumque ſeorſim ſuſpendatur,
              <lb/>
            tumque alterum eorum procul à linea perpendiculari, alte-
              <lb/>
            rum parumper duntaxat extrahatur, ſimulque è manu di-
              <lb/>
            mittantur; </s>
            <s xml:id="echoid-s891" xml:space="preserve">non diu utrumque ſimul in partes easdem ferri
              <lb/>
            videbitur, ſed prævertet illud cujus exiliores erunt recur-
              <lb/>
            ſus. </s>
            <s xml:id="echoid-s892" xml:space="preserve">Sed & </s>
            <s xml:id="echoid-s893" xml:space="preserve">temporum per quoslibet arcus rationes numeris
              <lb/>
            definiri poſſunt, certâ ſcientiâ nixis, & </s>
            <s xml:id="echoid-s894" xml:space="preserve">vero quam libuerit
              <lb/>
            propinquis, veluti quod tempus deſcenſus per totum circu-
              <lb/>
            li quadrantem eſt ad tempus per arcum minimum fere ut
              <lb/>
            34 ad 29. </s>
            <s xml:id="echoid-s895" xml:space="preserve">Adeo ut nequaquam reſiſtentiæ aëris ea diverſitas
              <lb/>
            imputanda ſit, ut quidam voluere, ſed ex ipſa motus natu-
              <lb/>
            ra circulique proprietate naſcatur. </s>
            <s xml:id="echoid-s896" xml:space="preserve">Quod alio quoque argu-
              <lb/>
            mento concludi poſſit ex ipſa Penduli iſochroni conſtructio-
              <lb/>
            ne, ubi à circulari linea haud parum receditur, uti mox
              <lb/>
            patebit.</s>
            <s xml:id="echoid-s897" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s898" xml:space="preserve">Sed videatur forſan in noſtris horologiis hiſce, ubi eadem
              <lb/>
            ſemper eſt oſcillationum latitudo, nullius momenti futura
              <lb/>
            quam diximus inæqualitas, adeoque nec correctione ulla
              <lb/>
            perpendiculi opus fore. </s>
            <s xml:id="echoid-s899" xml:space="preserve">Quod ſane ita eſſet ſi latitudo </s>
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