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

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            <s xml:id="echoid-s628" xml:space="preserve">
              <pb o="19" file="00025" n="25" rhead="PRIMO."/>
            molto conuincenti, e proprie. </s>
            <s xml:id="echoid-s629" xml:space="preserve">Qui certo non viſarebbe la
              <lb/>
            maggior conſtipatione, alla quale poteſſe ricorrere il Sig.
              <lb/>
            </s>
            <s xml:id="echoid-s630" xml:space="preserve">Deuſingio.</s>
            <s xml:id="echoid-s631" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s632" xml:space="preserve">_Conte_. </s>
            <s xml:id="echoid-s633" xml:space="preserve">Manon ſolo coll’immergerſi totalmente il vaſo, ò reci-
              <lb/>
            piente ſi potrebbe conoſcere il peſo dell’aria nell’acqua, ma
              <lb/>
            anco con il ponerlo ſimplicemente in eſſa à galleggiare. </s>
            <s xml:id="echoid-s634" xml:space="preserve">Già
              <lb/>
            habbiamo per la citata _prop. </s>
            <s xml:id="echoid-s635" xml:space="preserve">5. </s>
            <s xml:id="echoid-s636" xml:space="preserve">d’ Archimede_, che vna coſa più
              <lb/>
            leggiera dell’humido, poſta in quello, s’immerge ſino che
              <lb/>
            tant’humido quant’è la parte immerſa peſi come tutto quel
              <lb/>
            corpo. </s>
            <s xml:id="echoid-s637" xml:space="preserve">Hora poſto il recipiente pieno d’aria nell’acqua, si
              <lb/>
            immergerà ſino ad’vn certo ſegno. </s>
            <s xml:id="echoid-s638" xml:space="preserve">S’euacui, e ſi reponghi
              <lb/>
            nell’acqua. </s>
            <s xml:id="echoid-s639" xml:space="preserve">Io ſono ſicuriſſimo, che non s’immergerà tan-
              <lb/>
            to quanto prima, ma vn poco meno: </s>
            <s xml:id="echoid-s640" xml:space="preserve">e quel meno diligen-
              <lb/>
            temente oſſeruato, darà a conoſcere il peſo dell’aria eſtrat-
              <lb/>
            ta, e che queſta grauitaſſe nell’acqua.</s>
            <s xml:id="echoid-s641" xml:space="preserve"/>
          </p>
          <figure number="4">
            <image file="00025-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/9EXVCG1R/figures/00025-01"/>
          </figure>
          <p>
            <s xml:id="echoid-s642" xml:space="preserve">_Matem_. </s>
            <s xml:id="echoid-s643" xml:space="preserve">Che queſte eſperienze doueſſero
              <lb/>
            ſuccedere in pratica, io non ne hò du-
              <lb/>
            bio alcuno. </s>
            <s xml:id="echoid-s644" xml:space="preserve">Ma lei Sig. </s>
            <s xml:id="echoid-s645" xml:space="preserve">Ofredi, ſe per
              <lb/>
            ſorte n’ha qualche ſcrupolo, apra l’eru-
              <lb/>
            ditiſſimo Libro _de Compo. </s>
            <s xml:id="echoid-s646" xml:space="preserve">& </s>
            <s xml:id="echoid-s647" xml:space="preserve">Reſol. </s>
            <s xml:id="echoid-s648" xml:space="preserve">Ma-_
              <lb/>
            _tem_. </s>
            <s xml:id="echoid-s649" xml:space="preserve">del nobiliſſimo Signor Carlo Ri-
              <lb/>
            naldini noſtro comune amico, Geome-
              <lb/>
            tra inſigne, e Filoſofo Primario di que-
              <lb/>
            ſto Studio, & </s>
            <s xml:id="echoid-s650" xml:space="preserve">alla _pagina_ 179. </s>
            <s xml:id="echoid-s651" xml:space="preserve">ritrouarà
              <lb/>
            vn eſperienza da eſſo fatta più volte,
              <lb/>
            come mi ha detto a bocca, che io bre-
              <lb/>
            uemente le deſcriuerò. </s>
            <s xml:id="echoid-s652" xml:space="preserve">ABC, è vn’ am.
              <lb/>
            </s>
            <s xml:id="echoid-s653" xml:space="preserve">polla di vetro con il ſuo collo aſſai più
              <lb/>
            lungo d’vn braccio, & </s>
            <s xml:id="echoid-s654" xml:space="preserve">vn quarto, la
              <lb/>
            quale riempita d’argento viuo, & </s>
            <s xml:id="echoid-s655" xml:space="preserve">ot. </s>
            <s xml:id="echoid-s656" xml:space="preserve">
              <lb/>
            turata la bocca A con il dito, s’im-
              <lb/>
            merge in vn vaſo pieno di detto argẽ-
              <lb/>
            to: </s>
            <s xml:id="echoid-s657" xml:space="preserve">leuando poi il dito, l’argento viuo
              <lb/>
            diſcenderà ſino all’F, di modo che A F,
              <lb/>
            ſia vn braccio. </s>
            <s xml:id="echoid-s658" xml:space="preserve">& </s>
            <s xml:id="echoid-s659" xml:space="preserve">vn quarto, come ſup
              <lb/>
            põgo eſſer noto a V. </s>
            <s xml:id="echoid-s660" xml:space="preserve">S. </s>
            <s xml:id="echoid-s661" xml:space="preserve">per la tãto fa. </s>
            <s xml:id="echoid-s662" xml:space="preserve">
              <lb/>
            moſa eſperiẽza del tubo Torricellia-
              <lb/>
            no. </s>
            <s xml:id="echoid-s663" xml:space="preserve">Fatto ciò, la medema bocca A, coſi
              <lb/>
            immerſa s’otturi, e leghi beniſſimo </s>
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