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

Table of Notes

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              <pb o="534" file="0548" n="548" rhead="INTRODUCTIO ad COHÆRENTIAM"/>
            que eo minus fit Triangulum S B F reſpectu rectanguli ſub A B,
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            B F, adeoque Cohærentia reſpectiva fit minor reſpectu abſolutæ,
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            unde poſito Triangulo S B F = {1/3} vel {1/4} vel {1/5} & </s>
            <s xml:id="echoid-s12554" xml:space="preserve">c. </s>
            <s xml:id="echoid-s12555" xml:space="preserve">rectanguli A B, B F,
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            erit Cohærentia reſpectiva {1/3}, vel {1/4} vel {1/5} abſolutæ; </s>
            <s xml:id="echoid-s12556" xml:space="preserve">& </s>
            <s xml:id="echoid-s12557" xml:space="preserve">fieri poteſt
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            Triangulum S B F multo minus adhuc, unde multum adhuc de-
              <lb/>
            creſcere Cohærentia reſpectiva poterit, quæ proinde pendebit a ri-
              <lb/>
            giditate vel flexibilitate majori minorive fibrarum, poteſtque ſub
              <lb/>
            variis obſervari proportionibus, non determinandis niſi ex Expe-
              <lb/>
            rientia.</s>
            <s xml:id="echoid-s12558" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12559" xml:space="preserve">Sequitur ex his non dari in Natura unam regulam Univerſalem
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            exponentem proportionem eandem inter Cohærentiam reſpectivam
              <lb/>
            & </s>
            <s xml:id="echoid-s12560" xml:space="preserve">abſolutam, qualem Geometræ dare anniſi ſunt, cum diverſiſſi-
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            ma eſle debeat proportio pro variâ corporum flexibilitate, quemad-
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            modum revera Experientia evincit. </s>
            <s xml:id="echoid-s12561" xml:space="preserve">Si Philoſophi antequam ope-
              <lb/>
            ram huic doctrinæ navaſſent, prius plurima tentamina accurate
              <lb/>
            inſtituiſſent, multis peperciſſent laboribus, neque unquam uni u-
              <lb/>
            niverſali regulæ inveniendæ incubuiſſent: </s>
            <s xml:id="echoid-s12562" xml:space="preserve">quot enim fere diverſa
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            corpora dantur, totidem diverſæ proportiones inter Cohærentiam
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            abſolutam & </s>
            <s xml:id="echoid-s12563" xml:space="preserve">reſpectivam deprehenduntur.</s>
            <s xml:id="echoid-s12564" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s12565" xml:space="preserve">Antequam eventum Experimentorum deſcribam, prius metho-
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            dum, qua peracta fuerunt notabo, ut judicium ferri poſſit an ac-
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            curate, an negligentius perrexerim.</s>
            <s xml:id="echoid-s12566" xml:space="preserve"/>
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            <s xml:id="echoid-s12567" xml:space="preserve">Tab. </s>
            <s xml:id="echoid-s12568" xml:space="preserve">XIX. </s>
            <s xml:id="echoid-s12569" xml:space="preserve">conſpicitur machina noſtra divulſoria in cujus bi-
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            nis perpendicularibus fulcris K K erat foramen Q & </s>
            <s xml:id="echoid-s12570" xml:space="preserve">R, hoc rotun-
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            dum, illud quadratum, ut infigi poſſent Ligna Cylindrica & </s>
            <s xml:id="echoid-s12571" xml:space="preserve">pa-
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            rallelopipeda, erat utrumque ejus amplitudinis, ut arctiſſime com-
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            plecteretur corpora ſibi immiſſa: </s>
            <s xml:id="echoid-s12572" xml:space="preserve">oræ foraminum Q & </s>
            <s xml:id="echoid-s12573" xml:space="preserve">R erant mu-
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            nitæ lamina craſſa cuprea, ne læderentur a corporibus immiſſis,
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            inflexiſque, & </s>
            <s xml:id="echoid-s12574" xml:space="preserve">ut accuratiſſime menſuraretur diſtantia appenſi pon-
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            deris a foramine: </s>
            <s xml:id="echoid-s12575" xml:space="preserve">Deinde præparavi tabulam Ligneam quadratam
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            Tab. </s>
            <s xml:id="echoid-s12576" xml:space="preserve">XVIII. </s>
            <s xml:id="echoid-s12577" xml:space="preserve">fig, 9. </s>
            <s xml:id="echoid-s12578" xml:space="preserve">pedis quadrati, diviſam in 144 pollices quadra-
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            tos; </s>
            <s xml:id="echoid-s12579" xml:space="preserve">hæc applicabatur lateri fulcri K ad machinam divulſoriam, ut
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            linea, ubi diviſio prima incipit, eſſet in eadem horizontali cum
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            inferiori parte foraminis Q vel R: </s>
            <s xml:id="echoid-s12580" xml:space="preserve">Erat hæc tabula magnæ utilita-
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            tis & </s>
            <s xml:id="echoid-s12581" xml:space="preserve">commodi, quotieſcunque enim Ligno foramini machinæ im-
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            miſſo appenditur pondus, inflexio fit ante rupturam, neque </s>
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