Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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            <s xml:id="echoid-s6902" xml:space="preserve">
              <pb o="590" file="0326" n="343" rhead="CHRIST. HUGENII"/>
            turni ipſius, quam ſuperius diximus ad annuli diametrum ſe
              <lb/>
            habere ut 4 ad 9, hoc eſt fere ut 5 ad 11, ad diametrum
              <lb/>
            Solis erit paulo minor quam 5 ad 37.</s>
            <s xml:id="echoid-s6903" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6904" xml:space="preserve">Quanta vero ſit Saturni diameter ad Telluris diametrum
              <lb/>
            collata haud æque certo definiri poteſt. </s>
            <s xml:id="echoid-s6905" xml:space="preserve">Aſtronomi ita hoc
              <lb/>
            inveſtigant, ut primò intervallum inter terram ac Solem ad
              <lb/>
            certum terreſtrium diametrorum numerum revocent, inde
              <lb/>
            quæſitam magnitudinum rationem eliciant. </s>
            <s xml:id="echoid-s6906" xml:space="preserve">At in illo Solis
              <lb/>
            terræque taxando intervallo nimium quantum inter ſe diſ-
              <lb/>
            ſentiunt; </s>
            <s xml:id="echoid-s6907" xml:space="preserve">nec mirum, quum nulla adhuc tolerabilis metho-
              <lb/>
            dus ad dimetiendum hoc ſpatium reperta ſit. </s>
            <s xml:id="echoid-s6908" xml:space="preserve">Nam ſive per
              <lb/>
            Eclipſes ſive per Lunæ dichotomias id deprehendere conen-
              <lb/>
            tur, facile oſtendi queat inanem operam ſumi. </s>
            <s xml:id="echoid-s6909" xml:space="preserve">Quare mihi
              <lb/>
            quidem unica illa, quam dicam, ratio reliqua eſſe videtur,
              <lb/>
            qua ſaltem veriſimiliter de Planetarum omnium ad terram
              <lb/>
            magnitudine ac diſtantia ſtatui poſſit. </s>
            <s xml:id="echoid-s6910" xml:space="preserve">Teleſcopio diametri
              <lb/>
            Planetarum apparentes explorentur; </s>
            <s xml:id="echoid-s6911" xml:space="preserve">ex his ſingulorum dein-
              <lb/>
            ceps ad Solem comparata magnitudo inveſtigetur, ut de Sa-
              <lb/>
            turno modo exemplum dedimus; </s>
            <s xml:id="echoid-s6912" xml:space="preserve">omnibuſque perpenſis, ea
              <lb/>
            Telluris ad cæteros aſſumatur magnitudo, quæ totius ſyſte-
              <lb/>
            matis ordini aptæque diſpoſitioni quàm maxime congruere
              <lb/>
            videbitur. </s>
            <s xml:id="echoid-s6913" xml:space="preserve">Ita cum proportio diametrorum Telluris ac reli-
              <lb/>
            quorum. </s>
            <s xml:id="echoid-s6914" xml:space="preserve">Planetarum ad Solis diametrum conſtituta fuerit,
              <lb/>
            conſtetque inſuper quot ſuis diametris Sol à nobis diſtet, ex
              <lb/>
            angulo videlicet quem ſubtendit diameter ejus apparens, jam
              <lb/>
            terræ quoque ad Solem magnitudo nota erit; </s>
            <s xml:id="echoid-s6915" xml:space="preserve">atque unà So-
              <lb/>
            lis diſtantia, tum à terra tum à cæteris Planetis, Terræ dia-
              <lb/>
            metris æſtimabitur. </s>
            <s xml:id="echoid-s6916" xml:space="preserve">Hanc itaque nunc viam ingredi placet,
              <lb/>
            ideoque ſicut Saturnum cum Sole modo comparavimus, ita
              <lb/>
            de reliquis quoque ſimile examen inſtituemus.</s>
            <s xml:id="echoid-s6917" xml:space="preserve"/>
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            <s xml:id="echoid-s6918" xml:space="preserve">Jovis diameter, cum proximè nobis adeſt, ſexaginta qua-
              <lb/>
              <note position="left" xlink:label="note-0326-01" xlink:href="note-0326-01a" xml:space="preserve">Jovis terris
                <lb/>
              proximi dia-
                <lb/>
              meter appa-
                <lb/>
              rens quanta
                <lb/>
              obſervetur.</note>
            tuor ſecunda ſcrupula comprehendere mihi videtur; </s>
            <s xml:id="echoid-s6919" xml:space="preserve">quum-
              <lb/>
            que hæc ejus diſtantia ad mediam Solis diſtantiam ſit ut 26
              <lb/>
            ad 5, hinc ſi fiat ut 5 ad 26 ita 64″ ad aliud, invenientur
              <lb/>
            5′, 35″, amplitudo anguli quem obtineret Jovis diameter ſi
              <lb/>
            tam propinquus nobis fieri intelligatur atque Sol in </s>
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