Angeli, Stefano degli, Della gravita' dell' aria e fluidi : esercitata principalmente nelli loro homogenei

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            <s xml:id="echoid-s3294" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s3295" xml:space="preserve">V. </s>
            <s xml:id="echoid-s3296" xml:space="preserve">S. </s>
            <s xml:id="echoid-s3297" xml:space="preserve">potrà comprobare il ſuo diſcorſo con queſta eſperi-
              <lb/>
            enza. </s>
            <s xml:id="echoid-s3298" xml:space="preserve">Fori vna Botte coſi chiuſa nel mezzo d’vno delli ſuoi
              <lb/>
            circoli, & </s>
            <s xml:id="echoid-s3299" xml:space="preserve">vſcitone quel poco di vino, che dice vſcirne alle
              <lb/>
            volte, la fori poi piu ingiù vicino al fondo. </s>
            <s xml:id="echoid-s3300" xml:space="preserve">Poiche ſe ſarà
              <lb/>
            vero il ſuo diſcorſo, biſognerà che anco da queſto foro n’-
              <lb/>
            eſchi di nuouo qualche quantità. </s>
            <s xml:id="echoid-s3301" xml:space="preserve">E la ragione è manifeſta.
              <lb/>
            </s>
            <s xml:id="echoid-s3302" xml:space="preserve">Perche fatto il foro nel mezzo, n’eſce ſino a tanto che l’a-
              <lb/>
            ria interiore habbia tanto debilitato il proprio elaterio,
              <lb/>
            che queſti con il vino ſopraſtante al bucco s’equilibri con
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            l’aria eſteriore. </s>
            <s xml:id="echoid-s3303" xml:space="preserve">Hora il vino ſopraſtante al bucco inferiore,
              <lb/>
            come più alto, preme più che il ſopraſtante al bucco di
              <lb/>
            mezzo; </s>
            <s xml:id="echoid-s3304" xml:space="preserve">e in conſeguenza con l’aria debilitata per la prima
              <lb/>
            vſcita preme più che non premeua il primo vino meno al-
              <lb/>
            to con queſta. </s>
            <s xml:id="echoid-s3305" xml:space="preserve">Onde ſuperando il contrapeſo dell’aria eſte-
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            riore, deue vſcir il vino ſino che debilitandoſi l’elaterio
              <lb/>
            dell’aria, li momenti ſi pareggino. </s>
            <s xml:id="echoid-s3306" xml:space="preserve">Ne vale il dire, che an-
              <lb/>
            che la contropreſſione dell’ aria eſteriore ſia maggiore nel
              <lb/>
            fondo, che nel mezzo, correndo quà la medema ragione
              <lb/>
            del Baroſcopio nel piano, e nell’alto; </s>
            <s xml:id="echoid-s3307" xml:space="preserve">perche ſe bene queſto
              <lb/>
            è vero à tutto rigore, nulladimeno per la poca diſtanza trà
              <lb/>
            li due fori, queſta differenza di contrapreſſione deue eſſer
              <lb/>
            fiſicamente inſenſibile. </s>
            <s xml:id="echoid-s3308" xml:space="preserve">Tale non è la differenza delle due
              <lb/>
            altezze del vino della Botte.</s>
            <s xml:id="echoid-s3309" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3310" xml:space="preserve">_Ofr_. </s>
            <s xml:id="echoid-s3311" xml:space="preserve">Queſta eſperienza, quando ſucceda, mi fà chiuder la boc-
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            ca, e ſtimar di niun va lore vna riſpoſta, che m’apparecchia-
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            uo di dare al Signor Conte. </s>
            <s xml:id="echoid-s3312" xml:space="preserve">Voleuo dire, che non vſciua il
              <lb/>
            vino _ne detur vacuum_. </s>
            <s xml:id="echoid-s3313" xml:space="preserve">Perche fatto il primo foro, eſce il vino
              <lb/>
            ſino à tanto, che l’aria ſe ſia rarefatta quanto puole ad oc-
              <lb/>
            cupar quel ſpatio. </s>
            <s xml:id="echoid-s3314" xml:space="preserve">Ma poi rarefatta al poſſibile, non può
              <lb/>
            più il vino diſcendere, perche allora ſi daria vacuo. </s>
            <s xml:id="echoid-s3315" xml:space="preserve">Má per-
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            che vſcirà poi dal bucco inferiore? </s>
            <s xml:id="echoid-s3316" xml:space="preserve">Anco allora ſi darebbe
              <lb/>
            il vacuo. </s>
            <s xml:id="echoid-s3317" xml:space="preserve">Onde non douerebbe vſcire Se adunque eſce, e
              <lb/>
            ſegno che il vacuo non ha che fare.</s>
            <s xml:id="echoid-s3318" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s3319" xml:space="preserve">_Cont_. </s>
            <s xml:id="echoid-s3320" xml:space="preserve">In queſto mentre la mia fantaſia s’è andata ragirando
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            circa vn’altro accidente. </s>
            <s xml:id="echoid-s3321" xml:space="preserve">Ho oſſeruato più volte, che riem-
              <lb/>
            pita, e chiuſa vna Botte, queſta non ſpandeua in conto al-
              <lb/>
            cuno. </s>
            <s xml:id="echoid-s3322" xml:space="preserve">Poi improuiſamente gocciaua da qualche ſpiraglio.
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            </s>
            <s xml:id="echoid-s3323" xml:space="preserve">Si fermaua da ſua poſta, e di nuouo doppo qualche </s>
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