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

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          <p>
            <s xml:id="echoid-s5013" xml:space="preserve">
              <pb o="72" file="00166" n="166" rhead="_DIALOGO_"/>
            _ſuntgrauiora quam aqua, nedum aere; </s>
            <s xml:id="echoid-s5014" xml:space="preserve">tunc valdè probabiliter eſt_
              <lb/>
            _incrementum velocitatis fore ſecundum quadrata temporum_
              <lb/>
            &</s>
            <s xml:id="echoid-s5015" xml:space="preserve">c.</s>
            <s xml:id="echoid-s5016" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5017" xml:space="preserve">_Ofr_. </s>
            <s xml:id="echoid-s5018" xml:space="preserve">Se non vi è altra riſpoſta da ſatiar il mio appetito, al ſi-
              <lb/>
            curo che ſe io foſſi vna donna pregna, come ſcherza V. </s>
            <s xml:id="echoid-s5019" xml:space="preserve">S.
              <lb/>
            </s>
            <s xml:id="echoid-s5020" xml:space="preserve">farei il parto ſegnato. </s>
            <s xml:id="echoid-s5021" xml:space="preserve">Perche certo con maggior ecceſſo
              <lb/>
            di grauità eccede l’acqua l’aria pura, che li metalli, e pietre
              <lb/>
            l’acqua. </s>
            <s xml:id="echoid-s5022" xml:space="preserve">E pure l’aria nell’eſſer eſtruſa non oſſerua ne lli ſpa
              <lb/>
            tii paſſati li quadrati delli tempi. </s>
            <s xml:id="echoid-s5023" xml:space="preserve">Coſi eccede di maggior
              <lb/>
            ecceſſo l’acqua in grauità li altri corpi con li quali eſſo hà
              <lb/>
            eſperimentato, che tanti più graui dell’acqua non eccedo-
              <lb/>
            no eſſa; </s>
            <s xml:id="echoid-s5024" xml:space="preserve">e pure quelli non aſcendono li ſpatii come li qua-
              <lb/>
            drati delli tempi, e queſti li deſcenderanno. </s>
            <s xml:id="echoid-s5025" xml:space="preserve">L’ecceder il
              <lb/>
            corpo graue il mezzo per il quale deue diſcendere di poco
              <lb/>
            in grauità, non fà che ſi muti la proportione delli quadrati
              <lb/>
            delli tẽpi nelli ſpatii paſſati, ma ſolo che queſti ſpatii ſiino
              <lb/>
            minori paragonati cõ li paſſati da corpi più graui nelli me
              <lb/>
            demi tempi. </s>
            <s xml:id="echoid-s5026" xml:space="preserve">Tutti però queſti ſpatii ſono frà ſe proportio
              <lb/>
            nali, mentre ſono proportionali alli quadrati delli tempi. </s>
            <s xml:id="echoid-s5027" xml:space="preserve">
              <lb/>
            Tanto douerebbe ſuccedere alli corpi leggieri, ſe queſti
              <lb/>
            aſcendeſſero per leggierezza poſitiua; </s>
            <s xml:id="echoid-s5028" xml:space="preserve">che quanto più foſ-
              <lb/>
            ſero leggieri del mezzo aſcendeſſero più velocemente; </s>
            <s xml:id="echoid-s5029" xml:space="preserve">ma
              <lb/>
            però che li ſpatii paſſati da tutti foſſero come li quadrati
              <lb/>
            delli tempi. </s>
            <s xml:id="echoid-s5030" xml:space="preserve">In ſomma queſta riſpoſta del P. </s>
            <s xml:id="echoid-s5031" xml:space="preserve">Riccioli ha
              <lb/>
            ſuegliato in me deſiderio maggiore di ſaperne qualche
              <lb/>
            cauſa più veriſſimile.</s>
            <s xml:id="echoid-s5032" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5033" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s5034" xml:space="preserve">Per vedere, che il parto de V. </s>
            <s xml:id="echoid-s5035" xml:space="preserve">S non naſca deturpato com
              <unsure/>
              <lb/>
            qualche machia, me cimenterò io d’incontrarne vna forſe
              <lb/>
            maggiore. </s>
            <s xml:id="echoid-s5036" xml:space="preserve">Già parmi conſtare da quanto da noi è ſtato al-
              <lb/>
            tre volte detto, che il legno v. </s>
            <s xml:id="echoid-s5037" xml:space="preserve">g. </s>
            <s xml:id="echoid-s5038" xml:space="preserve">ſaliſce per l’acqua per la
              <lb/>
            ſola eſtruſione che li fà l’acqua deſcendendo, e non per leg-
              <lb/>
            gerezza poſitiua, la quale non darſi douerebbe pure il P
              <lb/>
            Riccioli imparare da queſte ſue eſperienze; </s>
            <s xml:id="echoid-s5039" xml:space="preserve">mentre queſt
              <lb/>
            ſuoi corpi non ſaliſcono con la proportione de quadrati
              <lb/>
            de tempi, come douerebbe ſuccedere. </s>
            <s xml:id="echoid-s5040" xml:space="preserve">A dunque non puà
              <lb/>
            eſter eſtruſo per ſpatii, che habbino la proportione delli
              <lb/>
            quadrati delli tempi, ſe l’acqua non diſcende con queſta
              <lb/>
            velocità. </s>
            <s xml:id="echoid-s5041" xml:space="preserve">Biſogna adunque indagare perche l’acqua </s>
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