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

Page concordance

< >
Scan Original
171 77
172 78
173 79
174 80
175 81
176 82
177 83
178 84
179 85
180 86
181 87
182 88
183 89
184 90
185 91
186 92
187 93
188 94
189 95
190 96
191
192
< >
page |< < (76) of 192 > >|
    <echo version="1.0RC">
      <text xml:lang="it" type="free">
        <div xml:id="echoid-div40" type="section" level="1" n="23">
          <pb o="76" file="00170" n="170" rhead="_DIALOGO_"/>
          <p>
            <s xml:id="echoid-s5126" xml:space="preserve">_Cont_. </s>
            <s xml:id="echoid-s5127" xml:space="preserve">Queſta ſtrauaganza è ſtata bene anco auuertita dall’oc-
              <lb/>
            culatiſſimo Riccioli, il quale à queſte eſperienze ſubito
              <lb/>
            ſoggiunge. </s>
            <s xml:id="echoid-s5128" xml:space="preserve">_Cauſa autem ob quam aer qui celerior eſſe debuit_,
              <lb/>
            _tardior tamen fuit oleo, fuit quia aer ſolus raritatem ſuam reti-_
              <lb/>
            _nens per anguſtum fiſtulæ canalem ſic aſcendebat, vt circa ſe_
              <lb/>
            _aquæ in ipſius locum ſuccedenti, tenuiſſimam viam relinqueret:_
              <lb/>
            </s>
            <s xml:id="echoid-s5129" xml:space="preserve">_quare cum aqua extenuari deberet morulas temporis requi-_
              <lb/>
            _rebat_.</s>
            <s xml:id="echoid-s5130" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5131" xml:space="preserve">_Mat_. </s>
            <s xml:id="echoid-s5132" xml:space="preserve">Laſcino queſte morule che ancor noi dimoriamo vn
              <lb/>
            poco circa queſta materia. </s>
            <s xml:id="echoid-s5133" xml:space="preserve">Deuono adunque ſapere, che
              <lb/>
            le predette eſperienze ſono ſtate tentate dal Riccioli in
              <lb/>
            occaſione di voler perſuadere al modo litterario, che ſe dia
              <lb/>
            leggierezza poſitiua, e che condottida queſta ſaliſcano
              <lb/>
            per l’acqua l’aria, & </s>
            <s xml:id="echoid-s5134" xml:space="preserve">oglio, e non perche ſiano eſtruſi dall’-
              <lb/>
            acqua più graue. </s>
            <s xml:id="echoid-s5135" xml:space="preserve">Della qual coſa tratta _ex profeſſo nel cit_.
              <lb/>
            </s>
            <s xml:id="echoid-s5136" xml:space="preserve">_luogo pag_. </s>
            <s xml:id="echoid-s5137" xml:space="preserve">383. </s>
            <s xml:id="echoid-s5138" xml:space="preserve">& </s>
            <s xml:id="echoid-s5139" xml:space="preserve">384 Ho nutrito lungo penſiero di eſami-
              <lb/>
            nare queſte ſue ragioni; </s>
            <s xml:id="echoid-s5140" xml:space="preserve">ma hauendo comprato in queſti
              <lb/>
            giorni il nuouo, & </s>
            <s xml:id="echoid-s5141" xml:space="preserve">eccellente libro del Dottiſſimo Signor
              <lb/>
            Gio. </s>
            <s xml:id="echoid-s5142" xml:space="preserve">Alfonſo Borelli _De motionibus natur alibus à grauitate_
              <lb/>
            _pendentibus_, & </s>
            <s xml:id="echoid-s5143" xml:space="preserve">hauendo veduto che _cap. </s>
            <s xml:id="echoid-s5144" xml:space="preserve">4 prop. </s>
            <s xml:id="echoid-s5145" xml:space="preserve">71. </s>
            <s xml:id="echoid-s5146" xml:space="preserve">e per altre_
              <lb/>
            _ſeguenti_, vengono da eſſo confutate, ho conoſciuto eſſer
              <lb/>
            ſuperflua la mia fatica. </s>
            <s xml:id="echoid-s5147" xml:space="preserve">Non giudico però vgualmente ſu-
              <lb/>
            perfluo narrare à loro Signori fedelmente l’eſperienze
              <lb/>
            tentate anco da me in ſimil propoſito.</s>
            <s xml:id="echoid-s5148" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5149" xml:space="preserve">Hò preſo vn tubo di vetro come SX, lungo vn braccio, e
              <lb/>
            mezzo in circa delli noſtri, e largo in diametro più della
              <lb/>
            larghezza de due vngie del pollice, & </s>
            <s xml:id="echoid-s5150" xml:space="preserve">otturatolo prima
              <lb/>
            con veſcica legata in S V, ſtrettiſſimamente, e riempito-
              <lb/>
            lo d’acqua, laſciandoli luogo per vn poco d’aria, l hò ſer-
              <lb/>
            rato parimente nel medemo modo dalla parte R X; </s>
            <s xml:id="echoid-s5151" xml:space="preserve">& </s>
            <s xml:id="echoid-s5152" xml:space="preserve">
              <lb/>
            hauendolo riuoltato in ſito perpendicolare all’orizonte,
              <lb/>
            hò oſſeruato che l’aria hauendo formato, in compara-
              <lb/>
            tione del primo, vn cilindro molto lungo, il quale termi-
              <lb/>
            naua di ſopra in figura curua come A B C, e di ſotto in
              <lb/>
            circolo poco meno largo del tubo, aſcendeua aſſai lenta.
              <lb/>
            </s>
            <s xml:id="echoid-s5153" xml:space="preserve">mente, occupando quaſi tutta la larghezza del tubo; </s>
            <s xml:id="echoid-s5154" xml:space="preserve">e
              <lb/>
            nel fine aſcendeua vn poco più velocemente che nel prin-
              <lb/>
            cipio; </s>
            <s xml:id="echoid-s5155" xml:space="preserve">e nel tempo, che egli a ſcendeua ſi vedeua manife.</s>
            <s xml:id="echoid-s5156" xml:space="preserve"/>
          </p>
        </div>
      </text>
    </echo>
Impressum