Huygens, Christiaan, Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica

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            <s xml:id="echoid-s10939" xml:space="preserve">
              <pb o="774" file="0518" n="540" rhead="CHRIST. HUGENII"/>
            gitur: </s>
            <s xml:id="echoid-s10940" xml:space="preserve">ſed quam primum materia hæc poteſt agere etiam ad
              <lb/>
            alteram partem (quod evenit ſi tubum concutiendo, vel im-
              <lb/>
            mittendo parvam aëris bullam, occaſio detur huic materiæ ef-
              <lb/>
            fectum ſuum inchoandi) preſſio illius æqualis erit ab utraque
              <lb/>
            parte, ita ut ſola ſuperſit æris preſſio quæ ſuſtinet Mercu-
              <lb/>
            r@um ad ordinariam altitudinem 27 pollicum; </s>
            <s xml:id="echoid-s10941" xml:space="preserve">Eadem de cau-
              <lb/>
            ſa in experimento aquæ aëre purgatæ, poſt remotam preſ-
              <lb/>
            ſio em aëris evacuando recipiens B, altera illa preſſio ejuſ-
              <lb/>
            dem materiæ agit etiam ut antea in ſuperficiem aquæ in vi-
              <lb/>
            tro D, & </s>
            <s xml:id="echoid-s10942" xml:space="preserve">cohibet ne aqua in Phiala C deſcendat. </s>
            <s xml:id="echoid-s10943" xml:space="preserve">Sed
              <lb/>
            ubi minima bulla aëris intrat phialam, materia quam dixi
              <lb/>
            tranſire per vitrum & </s>
            <s xml:id="echoid-s10944" xml:space="preserve">aquam, ſubito inflat bullam, editque
              <lb/>
            preſſionem æqualem illi, quæ agit in ſuperficiem aquæ in vi-
              <lb/>
            tro D, quare omnis aqua phialæ defluit, & </s>
            <s xml:id="echoid-s10945" xml:space="preserve">ad libellam cum
              <lb/>
            illa, quæ eſt in vitro ſeſe conſtituit.</s>
            <s xml:id="echoid-s10946" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10947" xml:space="preserve">Quæret forte quiſpiam cur preſſio ejus materiæ non agat in
              <lb/>
            aquam ſuſpenſam in phiala C, & </s>
            <s xml:id="echoid-s10948" xml:space="preserve">in Mercurium in tubo D
              <emph style="super">ni.</emph>
              <lb/>
            Boyle, etiam dum vaſa hæc plena ſunt, quoniam ſuppoſui,
              <lb/>
            illam haud difficulter penetrare vitrum æque ac aquam & </s>
            <s xml:id="echoid-s10949" xml:space="preserve">
              <lb/>
            Mercurium? </s>
            <s xml:id="echoid-s10950" xml:space="preserve">Et quare particulæ ejus materiæ non ſe jun-
              <lb/>
            gant, & </s>
            <s xml:id="echoid-s10951" xml:space="preserve">incipiant preſſionem, cum continuo in aqua & </s>
            <s xml:id="echoid-s10952" xml:space="preserve">Mer-
              <lb/>
            curio eant & </s>
            <s xml:id="echoid-s10953" xml:space="preserve">redeant, & </s>
            <s xml:id="echoid-s10954" xml:space="preserve">vitrum non impediat illarum com-
              <lb/>
            municationem cum particulis exterioribus.</s>
            <s xml:id="echoid-s10955" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10956" xml:space="preserve">Ut huic difficultati fiat ſatis, quæ revera maxima eſt, di-
              <lb/>
            cam, licet partes ejus materiæ, quam ſuppoſui, tranſitum in-
              <lb/>
            veniant inter illas, ex quibus vitrum aqua & </s>
            <s xml:id="echoid-s10957" xml:space="preserve">Mercurius for-
              <lb/>
            mantur, non tamen dari tranſitum ſatis latum ut plures ſimul
              <lb/>
            tranſeant, neque ut ſe moveant vi, quæ requiritur ut diſper-
              <lb/>
            gantur partes Mercurii vel aquæ, quæ inter ſe habent quen-
              <lb/>
            dam nexum. </s>
            <s xml:id="echoid-s10958" xml:space="preserve">Et ex hoc ipſo nexu ſequitur, (licet ad par-
              <lb/>
            tem ſuperficiei interioris vitri, quæ tangit aquam vel Mer-
              <lb/>
            curium ſuſpenſum, plures partes premantur actione particu-
              <lb/>
            larum ejus materiæ, cum tamen plurimæ partes aquæ aut
              <lb/>
            Mercurii non premantur, quæ a partibus vitri teguntur,) par-
              <lb/>
            tes aquæ aut Mercurii ſeſe mutuo ſuſtinere, omneſque ſuſpen-
              <lb/>
            ſas hærere; </s>
            <s xml:id="echoid-s10959" xml:space="preserve">quia minor eſt preſſio in ſuperficiem aquæ vel </s>
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