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

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          <pb o="91" file="00185" n="185" rhead="QVINTO."/>
          <p>
            <s xml:id="echoid-s5588" xml:space="preserve">_Ofr_. </s>
            <s xml:id="echoid-s5589" xml:space="preserve">Baccio la mano di V. </s>
            <s xml:id="echoid-s5590" xml:space="preserve">S. </s>
            <s xml:id="echoid-s5591" xml:space="preserve">Anch’io lo sò; </s>
            <s xml:id="echoid-s5592" xml:space="preserve">poichè in queſta,
              <lb/>
            guiſa non è poſſibile alzar la laſtra C A B, tanto rettamente
              <lb/>
            che non s’inclini qualche poco, alla quale inclinatione de-
              <lb/>
            ueſſi attrìbuire la ſeparatione; </s>
            <s xml:id="echoid-s5593" xml:space="preserve">altrimente chi tenterà alzar
              <lb/>
            la laſtra perpendicolarmente, ne anco con forza di Belze-
              <lb/>
            bù potrà ciò ottenere.</s>
            <s xml:id="echoid-s5594" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5595" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s5596" xml:space="preserve">Il Signor Borelli _nella predetta prop_. </s>
            <s xml:id="echoid-s5597" xml:space="preserve">regiſtra queſta ſua,
              <lb/>
            obiettione, e di eſſa dice. </s>
            <s xml:id="echoid-s5598" xml:space="preserve">_Huiuſmodi cauilloſa reſponſio con-_
              <lb/>
            _donari potest ijs Philoſophis, qui mathematicis imperiti ſunt_. </s>
            <s xml:id="echoid-s5599" xml:space="preserve">V. </s>
            <s xml:id="echoid-s5600" xml:space="preserve">S.
              <lb/>
            </s>
            <s xml:id="echoid-s5601" xml:space="preserve">s’è moſtrata nelli noſtri paſſati colloqui molto intendente
              <lb/>
            di geometria, e matematiche, onde certo non può fuggire
              <lb/>
            vna buona mula. </s>
            <s xml:id="echoid-s5602" xml:space="preserve">Il Sig. </s>
            <s xml:id="echoid-s5603" xml:space="preserve">Borelli per conuincere chi fa queſta
              <lb/>
            irragioneuole obiettioue porta _la prop_. </s>
            <s xml:id="echoid-s5604" xml:space="preserve">90. </s>
            <s xml:id="echoid-s5605" xml:space="preserve">molto bella. </s>
            <s xml:id="echoid-s5606" xml:space="preserve">Io
              <lb/>
            in altro modo (che è però ſimile al ſuo) e ſoggiungendo
              <lb/>
            qualche altra coſa, voglio conuincer’il Signor Ofredi, fa-
              <lb/>
            cendogli toccar con mano che in molti caſi ſarà aſſai più
              <lb/>
            difficile alzar la laſtra ſuperiore inclinãdola, che alzandola
              <lb/>
            perpendicolarmente: </s>
            <s xml:id="echoid-s5607" xml:space="preserve">onde ſe concede che ſe poſſi ſepara-
              <lb/>
            re inclinandola, ſarà aſtai più ragioneuole che ſe poſſi al-
              <lb/>
            zare perpendicolarmente. </s>
            <s xml:id="echoid-s5608" xml:space="preserve">Per moſtrarli queſto vorrei pri-
              <lb/>
            ma imparar da eſſo la ragione della leua, ò Vette, che hà il
              <lb/>
            fulcimento trà la forza, & </s>
            <s xml:id="echoid-s5609" xml:space="preserve">il peſo.</s>
            <s xml:id="echoid-s5610" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5611" xml:space="preserve">_Ofr_. </s>
            <s xml:id="echoid-s5612" xml:space="preserve">La ſeruo in poche parole. </s>
            <s xml:id="echoid-s5613" xml:space="preserve">Sia la leua A B, il cui ſoſtegno
              <lb/>
            ſia in C; </s>
            <s xml:id="echoid-s5614" xml:space="preserve">in B, il peſo d’alzarſi; </s>
            <s xml:id="echoid-s5615" xml:space="preserve">e la forzain A. </s>
            <s xml:id="echoid-s5616" xml:space="preserve">Allora la for-
              <lb/>
              <figure xlink:label="fig-00185-01" xlink:href="fig-00185-01a" number="36">
                <image file="00185-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/9EXVCG1R/figures/00185-01"/>
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            za ſoſtenirà il peſo, quando la medema proportione, che
              <lb/>
            hà B C, diſtanza del peſo dal ſuſtentacolo, all’A C, diſtanza
              <lb/>
            della forza dal medemo, l’habbia reciprocamente la </s>
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