Bernoulli, Daniel, Hydrodynamica, sive De viribus et motibus fluidorum commentarii

List of thumbnails

< >
161
161 (147)
162
162 (148)
163
163 (149)
164
164 (150)
165
165 (151)
166
166 (152)
167
167 (153)
168
168 (154)
169
169 (155)
170
170 (156)
< >
page |< < (188) of 361 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div223" type="section" level="1" n="176">
          <p>
            <s xml:id="echoid-s5425" xml:space="preserve">
              <pb o="188" file="0202" n="202" rhead="HYDRODYNAMICÆ"/>
            qui ſi vocetur X, ejuſque coſinus x, ſit o, 60000X + o, 80000 (1 + x)
              <lb/>
            = or = 1, 83800: </s>
            <s xml:id="echoid-s5426" xml:space="preserve">pro iſta conditione invenitur arcus a g h M s proxime
              <lb/>
            175 {1/2} grad. </s>
            <s xml:id="echoid-s5427" xml:space="preserve">incidente puncto s in plagam a g M: </s>
            <s xml:id="echoid-s5428" xml:space="preserve">Et cum arcus a g fuerit 48
              <emph style="super">0</emph>
            ,
              <lb/>
            35
              <emph style="super">1</emph>
            , erit tandem arcus g h M s 126
              <emph style="super">0</emph>
            , 55
              <emph style="super">1</emph>
            , qui proinde erit ad circumfe-
              <lb/>
            rentiam circuli præterpropter ut 10 ad 29: </s>
            <s xml:id="echoid-s5429" xml:space="preserve">ſimiliſque ratio intercedit inter ar-
              <lb/>
            cum helicis o p q integramque helicem.</s>
            <s xml:id="echoid-s5430" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5431" xml:space="preserve">Conſequens inde eſt, ſingulis revolutionibus cochlea à Vitruvio de-
              <lb/>
            ſcripta proxime ejici {10/29} illius quantitatis, quam helix integra & </s>
            <s xml:id="echoid-s5432" xml:space="preserve">plena con-
              <lb/>
            tinet, ſeu paullulum ultra trientem.</s>
            <s xml:id="echoid-s5433" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div224" type="section" level="1" n="177">
          <head xml:id="echoid-head225" xml:space="preserve">Scholium 3.</head>
          <p>
            <s xml:id="echoid-s5434" xml:space="preserve">(IX) Notandum tamen eſt, quæcunque ſit aquæ quantitas, quæ qua-
              <lb/>
            libet cochleæ revolutione canalem inferius ingreditur, ſuperiuſque ex eodem
              <lb/>
            eſſluit, nullum nec detrimentum nec lucrum propterea cadere in potentiam ab-
              <lb/>
            ſolutam ſi nulla habeatur frictionum ration, quia potentia movens cæteris paribus
              <lb/>
            illi quantitati proportionalis eſt. </s>
            <s xml:id="echoid-s5435" xml:space="preserve">At vero quia frictiones ſemper obſtant, eædem-
              <lb/>
            que fere ſunt ob pondus machinæ proprium, ſive major ſive minor quantitas
              <lb/>
            aquæ hauriatur, opera utique danda eſt, ut iſta quantitas cæteris paribus fiat
              <lb/>
            maxima: </s>
            <s xml:id="echoid-s5436" xml:space="preserve">Hâc de re nunc agam paullo diſertius.</s>
            <s xml:id="echoid-s5437" xml:space="preserve"/>
          </p>
        </div>
        <div xml:id="echoid-div225" type="section" level="1" n="178">
          <head xml:id="echoid-head226" xml:space="preserve">Scholium 4.</head>
          <p>
            <s xml:id="echoid-s5438" xml:space="preserve">(X) Jam innui ſuprà, creſcere rationem arcus g h M s ad circumferen-
              <lb/>
            tiam circuli decreſcentibus angulis s a o & </s>
            <s xml:id="echoid-s5439" xml:space="preserve">N M G: </s>
            <s xml:id="echoid-s5440" xml:space="preserve">uterque igitur minimus eſſet
              <lb/>
            conſtruendus, niſi alia obſtarent incommoda, præſertim ratione anguli N M G.
              <lb/>
            </s>
            <s xml:id="echoid-s5441" xml:space="preserve">Quod ad angulum s a o attinet, poteſt is fere ad lubitum diminui, neque aliud
              <lb/>
            inde incommodum reſultat, niſi quod latera canalis circumflectendi nimis ad
              <lb/>
            ſe invicem accedere poſſunt: </s>
            <s xml:id="echoid-s5442" xml:space="preserve">E contrario à diminutione iſtius anguli aliud ob-
              <lb/>
            tinetur compendium, nempe quod tunc eo verticalius poſſit erigi machina ip-
              <lb/>
            ſaque aqua eo altius elevari, etenim angulus a M H ſemper major eſſe debet
              <lb/>
            angulo s a o: </s>
            <s xml:id="echoid-s5443" xml:space="preserve">à verticaliori autem cochleæ poſitione ſimul obtinetur, ut mino-
              <lb/>
            ri incommodo ſit machinæ proprium pondus eaque facilius ſuſtineatur.</s>
            <s xml:id="echoid-s5444" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s5445" xml:space="preserve">Hæc ita perpendens crediderim fere ſufficere poſſe angulum 5 graduum,
              <lb/>
            quem faciat canalis cum baſe nuclei. </s>
            <s xml:id="echoid-s5446" xml:space="preserve">Cardanus quoque minorem iſtum </s>
          </p>
        </div>
      </text>
    </echo>