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

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            <s xml:id="echoid-s1218" xml:space="preserve">
              <pb o="36" file="00042" n="42" rhead="_DIALOGO_"/>
            acqua s’infondi l’oglio EFLH; </s>
            <s xml:id="echoid-s1219" xml:space="preserve">pare ragioneuole, che que
              <lb/>
            ſtocon l’acqua FGML, debba più grauitare, che la ſola ac-
              <lb/>
            qua FGML; </s>
            <s xml:id="echoid-s1220" xml:space="preserve">& </s>
            <s xml:id="echoid-s1221" xml:space="preserve">in conſeguenza, più che il galleggiante HM-
              <lb/>
            PN. </s>
            <s xml:id="echoid-s1222" xml:space="preserve">Onde lo farà ſalire fino che li momenti s’equilibrino. </s>
            <s xml:id="echoid-s1223" xml:space="preserve">In
              <lb/>
            ſomma l’effetto è certiſſimo. </s>
            <s xml:id="echoid-s1224" xml:space="preserve">Ne io d’eſso ſaprei aſsegnar
              <lb/>
            altra cauſa; </s>
            <s xml:id="echoid-s1225" xml:space="preserve">che queſta.</s>
            <s xml:id="echoid-s1226" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1227" xml:space="preserve">_Ofred_. </s>
            <s xml:id="echoid-s1228" xml:space="preserve">Se così è, V. </s>
            <s xml:id="echoid-s1229" xml:space="preserve">S. </s>
            <s xml:id="echoid-s1230" xml:space="preserve">ſarà dell’opinione del dottiſſimo Sig. </s>
            <s xml:id="echoid-s1231" xml:space="preserve">Dona-
              <lb/>
            to Roſsetti, il quale _nelle ſue dimoſtrationi Fiſicomat. </s>
            <s xml:id="echoid-s1232" xml:space="preserve">cart. </s>
            <s xml:id="echoid-s1233" xml:space="preserve">3_.
              <lb/>
            </s>
            <s xml:id="echoid-s1234" xml:space="preserve">dice. </s>
            <s xml:id="echoid-s1235" xml:space="preserve">_Il concetto d’ Archimede, che il galleggiante ſi ſommerga ſot_-
              <lb/>
            _to il liuello dell’ acqua, fin tanto che vna mole d’acqua eguale alla_
              <lb/>
            _parte ſommerſa, peſi aſſolutamente quanto tutto il galleggiante, è_
              <lb/>
            _falſiſſimo_. </s>
            <s xml:id="echoid-s1236" xml:space="preserve">E ſegue a dire, che la ſua propoſitione è vera, quan-
              <lb/>
            do ſopra l’a cqua, e galleggiante vi è vacuo, ma non quando
              <lb/>
            viè aria; </s>
            <s xml:id="echoid-s1237" xml:space="preserve">perche all’hora quanto peſa il galleggiante, tanto
              <lb/>
            peſa vna mole d’acqua eguale alla parte immerſa, inſieme
              <lb/>
            con vna mole d’aria eguale alla parte eſtante.</s>
            <s xml:id="echoid-s1238" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1239" xml:space="preserve">_Conte_. </s>
            <s xml:id="echoid-s1240" xml:space="preserve">Io non voglio ricercare, che coſa intendeſſe Archime-
              <lb/>
            de. </s>
            <s xml:id="echoid-s1241" xml:space="preserve">Sò bene che quanto dice il Signor Roſſetti, mi par vero;
              <lb/>
            </s>
            <s xml:id="echoid-s1242" xml:space="preserve">e facilmente m’induco a credere, che Archimede alla groſ-
              <lb/>
            ſa caminaſſe con I’opinione di quelli, che ſtimauano la no-
              <lb/>
            ſtra aria poſitinamente leggiera. </s>
            <s xml:id="echoid-s1243" xml:space="preserve">Che per altro io ſtimo, che
              <lb/>
            la grauita aſſoluta d’vn graue non ſia quella, che ſentiamo
              <lb/>
            nell’aria, ò in altro mezzo pieno, ma quella che ſentireſſi-
              <lb/>
            mo nel vuoto.</s>
            <s xml:id="echoid-s1244" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1245" xml:space="preserve">_Matem_. </s>
            <s xml:id="echoid-s1246" xml:space="preserve">In gratia Sig. </s>
            <s xml:id="echoid-s1247" xml:space="preserve">Conte non corra così precipitoſo in con-
              <lb/>
            dannar Archimede. </s>
            <s xml:id="echoid-s1248" xml:space="preserve">Chisà, che di quel Fenomeno di natu-
              <lb/>
            ra non ſia più toſto cauſa vna certa, per coſi dire, leggie-
              <lb/>
            rezza, ò grauità minore eſsercitata nell’ acqua? </s>
            <s xml:id="echoid-s1249" xml:space="preserve">Primiera-
              <lb/>
            mente vorrei, che conſideraſſimo, che Archimede non no-
              <lb/>
            mina mai grauità aſſoluta, ò altro, ma ſolo, come ſi vede
              <lb/>
            manifeſtamente dalla ſua propoſitione ſoprapoſta, conſide-
              <lb/>
            ra la grauità, ch’eſsercita il galleggiante, come immerſo nel-
              <lb/>
            l’acqua, e nel modo che ſta. </s>
            <s xml:id="echoid-s1250" xml:space="preserve">Secondariamente vorrei Signot
              <lb/>
            Ofredi, che eſſa mi diceſse, ſe eſsẽdo il galleggiante HMPN,
              <lb/>
            immerſo con la parte LMPO, e ſopra eſſo vi foſſe vacuo, ſe
              <lb/>
            alcuno l’alzaſſe dall’acqua, ma non totalmente, ſi che la
              <lb/>
            parte immerſa foſse minore del LMPO, ſe queſti ſentiſſe la
              <lb/>
            grauità aſsoluta del galleggiante, ò parte?</s>
            <s xml:id="echoid-s1251" xml:space="preserve"/>
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