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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            eſſe eo minores, quo plus diſtant a puncto M.</s>
            <s xml:id="echoid-s8221" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s8222" xml:space="preserve">Sed ipſa vis attrahens cujuslibet puncti decreſcit, quo corpus,
              <lb/>
            quod attrahitur, plus diſtat a puncto attrahente, igitur corpus X
              <lb/>
            attrahetur a punctis M, S, V, Q, P, L, eo minus, quo diſtan-
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            tiæ X M, X S, X V, X Q &</s>
            <s xml:id="echoid-s8223" xml:space="preserve">c. </s>
            <s xml:id="echoid-s8224" xml:space="preserve">ſuntmajores. </s>
            <s xml:id="echoid-s8225" xml:space="preserve">Sivero fuerint vires
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            attrahentes cujuslibet puncti, uti reciproce diſtantia attrahentis & </s>
            <s xml:id="echoid-s8226" xml:space="preserve">
              <lb/>
            attracti, tum erit vis puncti M in corpus X, ad vim puncti S in idem
              <lb/>
            X, uti S X ad M X. </s>
            <s xml:id="echoid-s8227" xml:space="preserve">& </s>
            <s xml:id="echoid-s8228" xml:space="preserve">eodem modo vis puncti L in X erit ad vim
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            puncti M in X, uti recta M X ad L X.</s>
            <s xml:id="echoid-s8229" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s8230" xml:space="preserve">Concipiatur X eſſe centrum circuli, X M radium, erit M L
              <lb/>
            Tangens circuli in puncto M, ducantur ex punctis S, V, Q, P,
              <lb/>
            L, Tangentis ad centrum X rectæ, erunt hæ ſecantes angulorum
              <lb/>
            S X M, V X M, Q X M, P X M, L X M, erit igitur vis
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            puncti L, qua trahit X, ad vim puncti S, quâ trahit idem X uti
              <lb/>
            S X ad L X, hoc eſt uti ſecans anguli S X M ad ſecantem anguli
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            L X M, ſive in ratione inverſa ſecantium angulorum, quos for-
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            mant diſtantiæ cum recta M X.</s>
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            <s xml:id="echoid-s8232" xml:space="preserve">Supra autem innuimus vim attrahentem puncti M adjuvari ab at-
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            tractionibus omnium punctorum inter M & </s>
            <s xml:id="echoid-s8233" xml:space="preserve">K ab unâ parte: </s>
            <s xml:id="echoid-s8234" xml:space="preserve">ſit vis
              <lb/>
            attrahens hoc modo conſiderata, uti eſt diſtantia a puncto L, erit
              <lb/>
            tum vis in S ad eam in M, uti L S ad L M; </s>
            <s xml:id="echoid-s8235" xml:space="preserve">aſſumatur quæcunque
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            M Y in M X, atque ducantur ex punctis S, V, Q, P, L paral-
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            lelæ ad M X, erit vis in S ad eam in M, uti S a ad M Y: </s>
            <s xml:id="echoid-s8236" xml:space="preserve">Quam-
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            obrem ſi M Y foret maſſa fiuida, hac ratione elevaretur uſque ad
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            L formaretque Triangulum rectangulum M L Y. </s>
            <s xml:id="echoid-s8237" xml:space="preserve">Sed hæc vis at-
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            trahens accedit alteri virtuti, quæ eſt in ratione inverſâ Secantium
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            explicata, adeoque lineæ M Y adjungatur quædam Y X, quæ ſit
              <lb/>
            uti Secans anguli L X M, & </s>
            <s xml:id="echoid-s8238" xml:space="preserve">ad L jungatur linea æqualis radio cir-
              <lb/>
            culi, cujus Secans eſt Y X ſub angulo L X Y, tum ad S a jungatur
              <lb/>
            Secans anguli P X M quæ ſit a c, & </s>
            <s xml:id="echoid-s8239" xml:space="preserve">reciproce ad P a jungatur Se-
              <lb/>
            cans anguli S X M. </s>
            <s xml:id="echoid-s8240" xml:space="preserve">quæ ſit a f: </s>
            <s xml:id="echoid-s8241" xml:space="preserve">ita ut ad V a jungatur Secans an-
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            guli Q X M, quæ ſit a d, & </s>
            <s xml:id="echoid-s8242" xml:space="preserve">ad Z a jungatur Secans anguli V X M
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            quæ ſit e a: </s>
            <s xml:id="echoid-s8243" xml:space="preserve">puncta c, d, e, f, l jungantur, deſcripta erit cur-
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            va, ei ſimilis, quam Aquain Experimento exhibet: </s>
            <s xml:id="echoid-s8244" xml:space="preserve">l, f, e, d, c, x.
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            </s>
            <s xml:id="echoid-s8245" xml:space="preserve">Eſſe curvam ideo patet, quia cum æquales capiuntur M S, S V,
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            V Q, Q P, P L. </s>
            <s xml:id="echoid-s8246" xml:space="preserve">evadent Tangentes a puncto M, duplo, </s>
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