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

Table of figures

< >
< >
page |< < (272) of 434 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div453" type="section" level="1" n="187">
          <p>
            <s xml:id="echoid-s5878" xml:space="preserve">
              <pb o="272" file="0354" n="384" rhead="MACHINARUM"/>
            ris lentium hyperbolicis ellipticiſve, ut Carteſius, ſive ſpe-
              <lb/>
            culis cavis, ut Neutonus, ſive alia quavis ratione id aggreſſi
              <lb/>
            ſint, huc omnia redibant ut brevioribus teleſcopiis, ac mi-
              <lb/>
            nori molimine uſurpandis, multum amplificarentur res viſæ.
              <lb/>
            </s>
            <s xml:id="echoid-s5879" xml:space="preserve">Nam neque accurata illa ac ſcrupuloſa ſuperficierum forma-
              <lb/>
            tio devitari poterat, neque etiam lentium ſpeculorumve
              <lb/>
            magnitudo. </s>
            <s xml:id="echoid-s5880" xml:space="preserve">quoniam obſcuritate nimia, quicquid machinati
              <lb/>
            fuerimus, inutile reddi neceſſe eſt, niſi pro ratione perce-
              <lb/>
            pti augmenti creſcant aperturæ quibus primum lux ſubintrat. </s>
            <s xml:id="echoid-s5881" xml:space="preserve">
              <lb/>
            Nos vero longitudines quidem non imminuimus, ſed ne obeſ-
              <lb/>
            ſent effecimus, quod fere eodem redit.</s>
            <s xml:id="echoid-s5882" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5883" xml:space="preserve">Si quis vero jam requirat quouſque & </s>
            <s xml:id="echoid-s5884" xml:space="preserve">quo operæ pretio
              <lb/>
            extendi porro teleſcopia poſſe exiſtimem, & </s>
            <s xml:id="echoid-s5885" xml:space="preserve">num productis
              <lb/>
            longe ultra modum eorum quæ paulo ante diximus, ſpe-
              <lb/>
            randum ſit adhuc decuplo propius ad lunam cæteraque
              <lb/>
            aſtra nos acceſſuros, quam quo triginta pedes habentibus pro-
              <lb/>
            ceſſimus; </s>
            <s xml:id="echoid-s5886" xml:space="preserve">quibus tanti itineris partes centum quadraginta
              <lb/>
            novem, una duntaxat reliqua, confectæ ſunt: </s>
            <s xml:id="echoid-s5887" xml:space="preserve">reſpondebo
              <lb/>
            me certos quidem arti terminos præfinire non poſſe; </s>
            <s xml:id="echoid-s5888" xml:space="preserve">huc ta-
              <lb/>
            men, quo dixi, nec maximo hominum conatu perventum
              <lb/>
            iri. </s>
            <s xml:id="echoid-s5889" xml:space="preserve">multoque minus futurum, quod aliqui videntur non de-
              <lb/>
            ſperaſſe, ut lunam ac Planetas cæteros velut è propinquo
              <lb/>
            inſpiciamus, & </s>
            <s xml:id="echoid-s5890" xml:space="preserve">utrum animalibus habitentur, an præter
              <lb/>
            vaſtas ſolitudines nihil habeant, viſu penetremus. </s>
            <s xml:id="echoid-s5891" xml:space="preserve">Primum
              <lb/>
            enim, in parandis lentibus, ſcio quantopere creſcat cum ma-
              <lb/>
            gnitudine formandi difficultas; </s>
            <s xml:id="echoid-s5892" xml:space="preserve">ipſiusque inveniendi vitri
              <lb/>
            quod vitiis iis careat, quæ maxime huic operi infeſta ſunt.
              <lb/>
            </s>
            <s xml:id="echoid-s5893" xml:space="preserve">Quanto enim ulterius radii colligentur, tanto magis hæc vi-
              <lb/>
            tia ſe prodant neceſſe eſt. </s>
            <s xml:id="echoid-s5894" xml:space="preserve">Conſtat præterea, ut jam iſta ni-
              <lb/>
            hil obſtent, non amplificari res viſas, niſi pro ratione diame-
              <lb/>
            trorum aperturæ lentis exterioris. </s>
            <s xml:id="echoid-s5895" xml:space="preserve">Quæ diametri nequaquam
              <lb/>
            creſcunt cum teleſcopiorum longitudine; </s>
            <s xml:id="echoid-s5896" xml:space="preserve">ſed, quantum vi-
              <lb/>
            deo, rationem longitudinum ſubduplam ſequuntur. </s>
            <s xml:id="echoid-s5897" xml:space="preserve">Adeo
              <lb/>
            ut data apertura pollicum trium, in teleſcopio triginta pe-
              <lb/>
            des longo; </s>
            <s xml:id="echoid-s5898" xml:space="preserve">quantam circiter experientia concedi ſinit; </s>
            <s xml:id="echoid-s5899" xml:space="preserve">alia,
              <lb/>
            ad trecentos pedes, non niſi novem unciarum & </s>
            <s xml:id="echoid-s5900" xml:space="preserve">ſemis </s>
          </p>
        </div>
      </text>
    </echo>
Impressum