Caverni, Raffaello, Storia del metodo sperimentale in Italia, 1891-1900

Table of figures

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      <text>
        <body>
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            <p type="main">
              <s>
                <pb xlink:href="020/01/682.jpg" pagenum="125"/>
                <emph type="italics"/>
              pauca.
                <emph.end type="italics"/>
              Ecco quali sono quelle idee, che vedonsi lampeggiar dal contesto
                <lb/>
              delle seguenti parole: “ Transferunt autem haec vitra (utrinque convexa et
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              utrinque concava) visas res a veris locis mirum in modum, sursum, deor­
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              sum dextrorsum sinistrorsum ecc. </s>
              <s>Quod etiam in sole experiri potes per vi­
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              trum simile coloribus tinetum, aut in Luna plena vitro liquido. </s>
              <s>Videbis enim
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              utrumlibet sidus in ellipsim configurari et loco transferri, pro situ et statu
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              vitri. </s>
              <s>Et si eiusmodi duo aut plura vitra diversis locis inter visum et sidera
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              dicta statueris, multiplicabis eadem sidera. </s>
              <s>E quibus rationem Pareliorum
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              Paraselenarumque eruere addisces. </s>
              <s>Quod idem specilla polyedra edocebunt. </s>
              <s>
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              Sed et homocentrice convexo concava vitra eadem praestant. </s>
              <s>Unde si ex
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              hisce humilibus in alia ascendere, tanquam gradibus quibusdam non pige­
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              bit, dicemus obiectu vel nobis vel vaporis, aut similis meteori diaphani re­
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              fractui et uno istorum modorum multipliciter figurati ecc. </s>
              <s>solem saepuiscule
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              videri et Parelia ita gigni. </s>
              <s>Sed haec ex occasione stringo non instituto enu­
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              cleo. </s>
              <s>Sapientibus pauca ” (Refractiones coelestes, Ingolstadii 1617, pag. </s>
              <s>40). </s>
            </p>
            <p type="main">
              <s>Questo sfolgorar del pensiero at­
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                <figure id="id.020.01.682.1.jpg" xlink:href="020/01/682/1.jpg" number="108"/>
              </s>
            </p>
            <p type="caption">
              <s>Figura 43.
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              traverso alle parole, così in fretta
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              dallo Scheiner pronunziate, era senza
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              dubbio assai seducente, ma dove tro­
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              vare in cielo que'vetri cristallini e
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              que'prismi atti a rifrangere in modo
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              i raggi del sole da rappresentare i
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              Parelii e le Corone? </s>
              <s>Fra i Sapienti
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              che ripensavano a queste cose si trovò
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              per avventura il Cartesio, il quale,
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              nell'inverno del 1635, trovandosi in
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              Amsterdam, si dette ad osservare di­
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              ligentissimamente le varie figure cri­
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              stalline della neve, in che, sotto l'aria
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              freddissima, si trasformavano le goc­
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              ciole della pioggia. </s>
              <s>Uscito da quella
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              contemplazione, che a lui sembrò nuo­
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              va, e ripensando che simili cristallini
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              di ghiaccio, più presto che in terra,
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              si formano in aria, dove per qualche
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              tempo vi possono rimaner sostenuti
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              dai venti; ecco, disse, i vetri lenti­
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              colari e i prismi, atti per rifrazione
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              a dipingere all'occhio di noi riguar­
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              danti in Terra le Corone e gli Aloni. </s>
            </p>
            <p type="main">
              <s>“ Sit ABC (fig. </s>
              <s>43) ex. </s>
              <s>gr. </s>
              <s>Sol,
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              D oculus, EFG plurimae glaciei par­
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              ticulae pellucidae aliae iuxta alias iacientes, plane quemadmodum esse de­
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              bent ut in stellulas formentur, et quarum convexitas talis est ut radius </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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