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

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          <p>
            <s xml:id="echoid-s5546" xml:space="preserve">
              <pb o="90" file="00184" n="184" rhead="DIALOGO"/>
            _rauimus, vt, ſi fortè huiuſmodi repetantur experimenta, minus mi-_
              <lb/>
            _rum videatur ſi non valeant alii primo, & </s>
            <s xml:id="echoid-s5547" xml:space="preserve">ſecundo, vel etiam deci-_
              <lb/>
            _mo aut viceſimo tentamine tantundem præſtare, ac nos præſtiti-_
              <lb/>
            _mus, poſtquam creber vſus in percurioſo hoc experimento expertes_
              <lb/>
            _nos feciſſet, & </s>
            <s xml:id="echoid-s5548" xml:space="preserve">c_.</s>
            <s xml:id="echoid-s5549" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5550" xml:space="preserve">Queſte difficoltà, l’eſperienze fatte, e li peſi alzati ſi vedano
              <lb/>
            nel me demo Boile _nel detto trattat. </s>
            <s xml:id="echoid-s5551" xml:space="preserve">de Firm_. </s>
            <s xml:id="echoid-s5552" xml:space="preserve">che a me pare,
              <lb/>
            che ad eſſe ſe remedii aſſai bene con il modo propoſto dal
              <lb/>
            medemo _ſect_. </s>
            <s xml:id="echoid-s5553" xml:space="preserve">23. </s>
            <s xml:id="echoid-s5554" xml:space="preserve">e conſiderato dal Sig. </s>
            <s xml:id="echoid-s5555" xml:space="preserve">Borelli _prop_. </s>
            <s xml:id="echoid-s5556" xml:space="preserve">89. </s>
            <s xml:id="echoid-s5557" xml:space="preserve">Vna
              <lb/>
            di queſte laſtre s’incaſtri bene nel pauimento, e ſi collochi
              <lb/>
            parallela all’orizonte, l’aItra ſe gli ponghi ſopra, e per eſ
              <lb/>
            cluder l’aria, che non poſſi entrare tra eſſe, ſe ſommerga-
              <lb/>
            no nell’ acqua di modo che la comiſura trà eſſe ſia ſotto
              <lb/>
            acqua, e ſe procuri d’alzare la ſuperiore perpendicolar-
              <lb/>
            mente.</s>
            <s xml:id="echoid-s5558" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5559" xml:space="preserve">_Ofr_. </s>
            <s xml:id="echoid-s5560" xml:space="preserve">Io credo che queſta non potrà eſſer alzata conforza alcu-
              <lb/>
            na anco infinita.</s>
            <s xml:id="echoid-s5561" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5562" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s5563" xml:space="preserve">V. </s>
            <s xml:id="echoid-s5564" xml:space="preserve">S è in grande errore, perche non vi vorrà altra forza
              <lb/>
            ſe non quella, che ſnperi di poco, e la grauità della laſtra,
              <lb/>
            ſuperiore, e de ll’aria, che li ſouraſta, la quale è vguale al
              <lb/>
            predetto cilindro d’argentoniuo. </s>
            <s xml:id="echoid-s5565" xml:space="preserve">Per eſenipio ſiano le la-
              <lb/>
            ſtre di 4. </s>
            <s xml:id="echoid-s5566" xml:space="preserve">dita di diametro; </s>
            <s xml:id="echoid-s5567" xml:space="preserve">la ſuperiore peſi 2. </s>
            <s xml:id="echoid-s5568" xml:space="preserve">libbre, & </s>
            <s xml:id="echoid-s5569" xml:space="preserve">vn,
              <lb/>
            cilindro di mercurio della medema baſe, & </s>
            <s xml:id="echoid-s5570" xml:space="preserve">alto vn brac-
              <lb/>
            cio, & </s>
            <s xml:id="echoid-s5571" xml:space="preserve">vn quarto peſi 30. </s>
            <s xml:id="echoid-s5572" xml:space="preserve">libbre. </s>
            <s xml:id="echoid-s5573" xml:space="preserve">Chitirera, ò adoprà forza,
              <lb/>
            ò peſo, che eccedi 32. </s>
            <s xml:id="echoid-s5574" xml:space="preserve">libbre ſeparerà la laſtra ſuperiore,
              <lb/>
            dall’inferiore; </s>
            <s xml:id="echoid-s5575" xml:space="preserve">con minore no. </s>
            <s xml:id="echoid-s5576" xml:space="preserve">V. </s>
            <s xml:id="echoid-s5577" xml:space="preserve">S. </s>
            <s xml:id="echoid-s5578" xml:space="preserve">eſper imenti ciò in que-
              <lb/>
            ſta guiſa come propone il Sig Borelli. </s>
            <s xml:id="echoid-s5579" xml:space="preserve">Sia la laſtra inferiore
              <lb/>
            D E, & </s>
            <s xml:id="echoid-s5580" xml:space="preserve">il cilindro, o laſtra ſupe-
              <lb/>
            riore C A B. </s>
            <s xml:id="echoid-s5581" xml:space="preserve">che la combacci eſ-
              <lb/>
              <figure xlink:label="fig-00184-01" xlink:href="fig-00184-01a" number="35">
                <image file="00184-01" xlink:href="http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/9EXVCG1R/figures/00184-01"/>
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            quiſiramente in A B, ſia queſta,
              <lb/>
            attaccata in H, alla lance d’vna,
              <lb/>
            libra di braccia vguali, & </s>
            <s xml:id="echoid-s5582" xml:space="preserve">all’al-
              <lb/>
            sra eſtremità K, ſia attaccato il
              <lb/>
            peſo N, vguale à quello della la-
              <lb/>
            ſtra C A B, & </s>
            <s xml:id="echoid-s5583" xml:space="preserve">O, che ſuperi di po-
              <lb/>
            co quello del prederto cilindro
              <lb/>
            di mercurio. </s>
            <s xml:id="echoid-s5584" xml:space="preserve">Infallibilmente V. </s>
            <s xml:id="echoid-s5585" xml:space="preserve">S.
              <lb/>
            </s>
            <s xml:id="echoid-s5586" xml:space="preserve">alzerà la laſtra.</s>
            <s xml:id="echoid-s5587" xml:space="preserve"/>
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