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

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          <chap>
            <pb xlink:href="020/01/689.jpg"/>
            <p type="main">
              <s>
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              CAPITOLO IV.
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              </s>
            </p>
            <p type="main">
              <s>
                <emph type="center"/>
                <emph type="bold"/>
              Del calore
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                <emph.end type="center"/>
              </s>
            </p>
            <p type="main">
              <s>
                <emph type="center"/>
              SOMMARIO
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              </s>
            </p>
            <p type="main">
              <s>I. Dell'antica teoria degl'ignicoli rinnovata da Galileo: della questione del freddo positive o priva­
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              tivo. </s>
              <s>— II. </s>
              <s>Di alcune speculazioni e sperienze meno note fatte intorno al calore dagli Accade­
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              mici del Cimento. </s>
              <s>— III. </s>
              <s>Del calore di comunicazione, e del calorico raggiante. </s>
              <s>— IV. </s>
              <s>Degli
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              effetti del calore negli agghiacciamenti. </s>
              <s>— V. </s>
              <s>Degli effetti del calore nelle evaporazioni. </s>
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            <p type="main">
              <s>
                <emph type="center"/>
              I.
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              </s>
            </p>
            <p type="main">
              <s>La lampada ardente del Sole e le nostre fiamme artificiali conferma­
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              rono così nelle menti degli uomini l'opinione della concomitanza della luce
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              col calore, che furono per lungo tempo credute inseparabili, cosicchè sola­
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              mente sopite, per causa estrinseca e violenta, si credeva esser rimasta la
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              luce stessa, quando in un corpo incalorito non si mostra parvente. </s>
              <s>Comun­
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              que sia quella concomitanza de'due elementi, ministri principali della Na­
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              tura, è così frequente, e per la comune consuetudine hanno proprietà tal­
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              mente comuni, che non si può alla storia della scienza della luce non far
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              immediatamente succedere la storia della scienza del calore. </s>
            </p>
            <p type="main">
              <s>Resa quella scienza impossibile da'Peripatetici, che reputarono essere
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              il calore stesso qualità e non sostanza, Leucippo, Democrito ed Epicuro, con
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              altri antichi Filosofi seguaci di Platone, dissero, avviando le loro specula­
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              zioni per miglior sentiero, il caldo essere una mera affezione de'nostri sensi,
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              la quale non d'altronde derivi che dall'insinuarsi ne'pori delle nostre carni,
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              uscendo con moto velocissimo, da'corpi detti calidi, alcuni atomi sottilissimi
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              e perciò atti a penetrare dovunque. </s>
              <s>Il veder poi che il calore era bene spesso
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              eccitato dal moto, e ch'era effetto naturale di lui il rarefare i corpi, serviva
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              di conferma a quelle dottrine, che perciò, in sul primo risorgere della scienza </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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