Bianconi, Giovanni Lodovico, Due lettere di fisica al signor marchese Scipione Maffei, 1746

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            <s xml:id="echoid-s413" xml:space="preserve">
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            canone deciſivo. </s>
            <s xml:id="echoid-s414" xml:space="preserve">La diverſità che tro-
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            vaſi frà tutti gli eſperimenti che ſinora
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            ſonoſi fatti, parmi che ſervir poſſa di
              <lb/>
            contraſegno aſſai convincente a queſto
              <lb/>
            mio aſſerto. </s>
            <s xml:id="echoid-s415" xml:space="preserve">Imperciocchè chi vorrà di-
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            re che gli Accademici di Toſcana (non
              <lb/>
            parlo del Gaſſendo, perchè veramente e-
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            gli ſi è tanto da gli altri dilungato, che
              <lb/>
            non ſo trovare maniera di ſalvarlo) il
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            Perrault, il Caſſini vecchio, Piccard,
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            Romer, Huggen, Flamſted, Halley, Caſ-
              <lb/>
            ſini di Toury, e tanti altri che ci han-
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            no laſciate leggi più o meno l’una dall’
              <lb/>
            altra diverſe, abbiano oſſervato negligen-
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            temente, e tutti ſieno caduti in errore?
              <lb/>
            </s>
            <s xml:id="echoid-s416" xml:space="preserve">che deeſi adunque da queſto conclude-
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            re? </s>
            <s xml:id="echoid-s417" xml:space="preserve">che la velocità del ſuono non biſo-
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            gna che ſia eguale in ogni paeſe o in
              <lb/>
            ogni ſtagione, e che tante circoſtanze di-
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            verſamente combinate concorrano a can-
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            giarla, che non ſarà poſſibile ridurle </s>
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