Musschenbroek, Petrus van, Physicae experimentales, et geometricae de magnete, tuborum capillarium vitreorumque speculorum attractione, magnitudine terrae, cohaerentia corporum firmorum dissertationes: ut et ephemerides meteorologicae ultraiectinae

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        <div xml:id="echoid-div244" type="section" level="1" n="244">
          <head xml:id="echoid-head267" xml:space="preserve">EXPERIMENTUM X.</head>
          <p>
            <s xml:id="echoid-s8630" xml:space="preserve">Si, poſito ſpeculo B horizontali, gutta notabilis Mercurii ſuper-
              <lb/>
            affundatur in B, tumque alterum ſpeculum A C ſuperponatur, donec
              <lb/>
            ſe contingant in A, ſimulac ſpeculum ſuperius attingit guttam B,
              <lb/>
            hæc applanatur, circularem, vel ſphæræ compreſſæ induendo ſi-
              <lb/>
            guram & </s>
            <s xml:id="echoid-s8631" xml:space="preserve">movetur verſus ſpeculorum hiatum C, quo autem ſpecu-
              <lb/>
            la ſibi arctius apponuntur, eo gutta B plus recedit ab A verſus C
              <lb/>
            adeoque contrarium fit in Mercurio quam in aliis liquoribus hacte-
              <lb/>
            nus examinatis, quemadmodum in Experimento VII. </s>
            <s xml:id="echoid-s8632" xml:space="preserve">etiam de-
              <lb/>
            prehendimus & </s>
            <s xml:id="echoid-s8633" xml:space="preserve">explicuimus.</s>
            <s xml:id="echoid-s8634" xml:space="preserve"/>
          </p>
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        <div xml:id="echoid-div245" type="section" level="1" n="245">
          <head xml:id="echoid-head268" xml:space="preserve">EXPERIMENTUM XI.</head>
          <p>
            <s xml:id="echoid-s8635" xml:space="preserve">Omnia hæc Experimenta ſortiuntur eoſdem eventus, ſive inſti-
              <lb/>
            tuantur in recipiente Boyleano, ex quo omnis eductus eſt Aër,
              <lb/>
            ſive in Aëre aperto: </s>
            <s xml:id="echoid-s8636" xml:space="preserve">adeoque cauſa eorum non poteſt dici preſſio
              <lb/>
            quædam Aëris elaſtici; </s>
            <s xml:id="echoid-s8637" xml:space="preserve">quippe ſublato Aëre, & </s>
            <s xml:id="echoid-s8638" xml:space="preserve">proinde preſſio-
              <lb/>
            ne, ceſſaret effectus: </s>
            <s xml:id="echoid-s8639" xml:space="preserve">neque poteſt preſſio, alterius fluidi ſubtilio-
              <lb/>
            ris dici cauſa horum admirandorum phænomen?</s>
            <s xml:id="echoid-s8640" xml:space="preserve">n, nam illud flui-
              <lb/>
            dum tranſibit tum facile per poros vitrei recipientis; </s>
            <s xml:id="echoid-s8641" xml:space="preserve">quia eadem
              <lb/>
            phænomena in vacuo contingunt; </s>
            <s xml:id="echoid-s8642" xml:space="preserve">igitur quæro an tum illud flui-
              <lb/>
            dum non facilius adhuc intrabit rimam inter ſpecula relictam,
              <lb/>
            millies forte ampliorem poro quocunque vitri? </s>
            <s xml:id="echoid-s8643" xml:space="preserve">quam ſi intraverit,
              <lb/>
            æque ſuperne, quam lateraliter, ac poſtice, nulla poterit ab hoc fluido
              <lb/>
            fieri inæqualis preſſio, nulluſque liquoris inter ſpecula adſcenſus.
              <lb/>
            </s>
            <s xml:id="echoid-s8644" xml:space="preserve">Imo ex preſſione cujuſlibet fluidi, minore inter commiſſuram ſpecu-
              <lb/>
            lorum quam extrinſecus, explicetur quare gutta nonnullorum oleo-
              <lb/>
            rum mediis interjacens ſpeculis feratur rapide ſurſum, alia, ſive
              <lb/>
            denſioris ſive rarioris ſubſtantiæ, vix, imo non adſcendat, uti Ex-
              <lb/>
            perimentum VIII. </s>
            <s xml:id="echoid-s8645" xml:space="preserve">ejuſmodi exempla habet: </s>
            <s xml:id="echoid-s8646" xml:space="preserve">tum quare Mercu-
              <lb/>
            rius deſcendat, recedatque a junctura locum ampliorem verſus; </s>
            <s xml:id="echoid-s8647" xml:space="preserve">
              <lb/>
            hæc preſſionis cujuſlibet fluidi ope exponi nequeunt: </s>
            <s xml:id="echoid-s8648" xml:space="preserve">taceo flui-
              <lb/>
            dum id ſubtilius modo advocari, cujus exiſtentia nondum eſt pro-
              <lb/>
            bata, adeoque tuto concludam a preſſione nullius fluidi memorata
              <lb/>
            phænomena pendere poſſe.</s>
            <s xml:id="echoid-s8649" xml:space="preserve"/>
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