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

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page |< < (XLVI) of 125 > >|
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          <p>
            <s xml:id="echoid-s185" xml:space="preserve">
              <pb o="XLVI" file="0054" n="54"/>
            volta anche ocularmente le fenditure che
              <lb/>
            gettano per qualche cauſa eſterna i ve-
              <lb/>
            tri. </s>
            <s xml:id="echoid-s186" xml:space="preserve">Chi è di noi che veduto non l’ab-
              <lb/>
            bia, ſe per efempio nel tempo maſſime
              <lb/>
            d’inverno verſaſi acqua bollente dentro
              <lb/>
            ad un fiaſco di vetro o in un groſſo
              <lb/>
            bicchier di criſtallo ? </s>
            <s xml:id="echoid-s187" xml:space="preserve">Vedonſi pure allo-
              <lb/>
            ra dilatarſi ed ingrandirſi ſucceſſivamen-
              <lb/>
            te talora più talora men celeremente le
              <lb/>
            fenditure che per lo più in ſimil caſo
              <lb/>
            ſar vi ſi ſogliono, le quali non ſi arre-
              <lb/>
            ſtano, ſe non quando il vetro ſi è fat-
              <lb/>
            to egualmente caldo che l’acqua verſa-
              <lb/>
            tavi dentro, lo che è lo ſteſſo che di-
              <lb/>
            re, ſe non quando le parti del vetro ſo-
              <lb/>
            no tutte egualmente teſe, ſuppoſto però
              <lb/>
            ch’ egli non cada in pezzi prima d’ar-
              <lb/>
            rivarvi. </s>
            <s xml:id="echoid-s188" xml:space="preserve">Di più, non ſono nè debbono
              <lb/>
            eſſere nuovi nella natura a diligente oſ-
              <lb/>
            ſervatore codeſti lenti ed inſenſibili mo-
              <lb/>
            ti, anzi io credo che neſſun corpo </s>
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