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 contents

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[631.] EXPERIMENTUM CCXVIII.
Page: 660 (643)
[632.] EXPERIMENTUM CCXIX.
Page: 660 (643)
[633.] EXPERIMENTUM CCXX.
Page: 661 (644)
[634.] TABULA
Page: 664 (647)
[635.] EXPERIMENTUM CCXXI.
Page: 668 (651)
[636.] CAPUT NONUM. De Cohærentia corporum compreſſorum.
Page: 669 (652)
[637.] EXPERIMENTUM CCXXII.
Page: 672 (655)
[638.] EXPERIMENTUM CCXXIII.
Page: 672 (655)
[639.] EXPERIMENTUM CCXXIV.
Page: 672 (655)
[640.] EXPERIMENTUM CCXXV.
Page: 672 (655)
[641.] EXPERIMENTUM CCXXVI.
Page: 672 (655)
[642.] EXPERIMENTUM CCXXVII.
Page: 672 (655)
[643.] EXPERIMENTUM CCXXVIII.
Page: 673 (656)
[644.] EXPERIMENTUM CCXXIX.
Page: 673 (656)
[645.] EXPERIMENTUM CCXXX.
Page: 673 (656)
[646.] EXPERIMENTUM CCXXXI.
Page: 673 (656)
[647.] EXPERIMENTUM CCXXXII.
Page: 673 (656)
[648.] EXPERIMENTUM CCXXXIII.
Page: 673 (656)
[649.] EXPERIMENTUM CCXXXIV.
Page: 673 (656)
[650.] EXPERIMENTUM CCXXXV.
Page: 674 (657)
[651.] EXPERIMENTUM CCXXXVI.
Page: 674 (657)
[652.] EXPERIMENTUM CCXXXVII.
Page: 674 (657)
[653.] EXPERIMENTUM CCXXXVIII.
Page: 674 (657)
[654.] EXPERIMENTUM CCXXXIX.
Page: 674 (657)
[655.] EXPERIMENTUM CCXL.
Page: 674 (657)
[656.] EXPERIMENTUM CCXLI.
Page: 674 (657)
[657.] EXPERIMENTUM CCXLII.
Page: 674 (657)
[658.] EXPERIMENTUM CCXLIII.
Page: 675 (658)
[659.] PROPOSITIO CXVIII.
Page: 675 (658)
[660.] PROPOSITIO CXIX.
Page: 677 (660)
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            <s xml:id="echoid-s15576" xml:space="preserve">
              <pb o="622" file="0638" n="639" rhead="INTRODUCTIO AD COHÆRENTIAM"/>
            duplicata altitudinis, veluti vitrum eſt, ſecundum Experimenta
              <lb/>
            ab CLXXVIII. </s>
            <s xml:id="echoid-s15577" xml:space="preserve">ad CLXXXIV. </s>
            <s xml:id="echoid-s15578" xml:space="preserve">2°. </s>
            <s xml:id="echoid-s15579" xml:space="preserve">Tum dari alia, quorum Cohæ-
              <lb/>
            rentia accedit appropinquando ad eam proportionem, veluti eſt
              <lb/>
            Lignum Quercicum, ſecundum Experimenta ab CLXII ad CLXVII.
              <lb/>
            </s>
            <s xml:id="echoid-s15580" xml:space="preserve">& </s>
            <s xml:id="echoid-s15581" xml:space="preserve">ab CLXXXVII. </s>
            <s xml:id="echoid-s15582" xml:space="preserve">ad CXCII. </s>
            <s xml:id="echoid-s15583" xml:space="preserve">ut & </s>
            <s xml:id="echoid-s15584" xml:space="preserve">Lignum Piceæ, ſecundum
              <lb/>
            Experimenta ab CLXXIV. </s>
            <s xml:id="echoid-s15585" xml:space="preserve">CLXXVII. </s>
            <s xml:id="echoid-s15586" xml:space="preserve">& </s>
            <s xml:id="echoid-s15587" xml:space="preserve">a CC ad CCIV. </s>
            <s xml:id="echoid-s15588" xml:space="preserve">
              <lb/>
            3°. </s>
            <s xml:id="echoid-s15589" xml:space="preserve">Deinde dari alia, quæ ab hac proportione magis abludunt,
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            quemadmodum Lignum Fraxini & </s>
            <s xml:id="echoid-s15590" xml:space="preserve">Lignum Tiliæ, ſecundum Ex-
              <lb/>
            perimenta ab CXCVI ad CC, & </s>
            <s xml:id="echoid-s15591" xml:space="preserve">ab CCIV ad CCVIII.</s>
            <s xml:id="echoid-s15592" xml:space="preserve"/>
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          <p>
            <s xml:id="echoid-s15593" xml:space="preserve">Valde flexilium Cohærentia non in tam alta ratione aſſurgit
              <lb/>
            quam quidem corporum duriorum, quia fibræ, quæ prius fran-
              <lb/>
            guntur, valde quam extenduntur: </s>
            <s xml:id="echoid-s15594" xml:space="preserve">quæ poſtremo rumpuntur, po-
              <lb/>
            tius in initio comprimuntur, quod potiſſimum obtinet in corporibus
              <lb/>
            altioribus, quorum Cohærentia ſemper obſervatur plus quoque re-
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            cedere â vulgari regula.</s>
            <s xml:id="echoid-s15595" xml:space="preserve"/>
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            <s xml:id="echoid-s15596" xml:space="preserve">Non dubito, quin ſi plura Lignorum genera examinaviſſem, de-
              <lb/>
            prehendiſſem nonnunquam majores, nonnunquam minores aber-
              <lb/>
            rationes: </s>
            <s xml:id="echoid-s15597" xml:space="preserve">forte quoque pro diverſâ corporum ſiccitate, humidita-
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            te, ætate qua concreverunt, tempore quo ſciſſa ſunt, regione in
              <lb/>
            qua creverunt, proportiones diſcrepabunt, idcirco non video Na-
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            turam regulis adeo univerſalibus gaudere ubivis, ac vulgo quæ-
              <lb/>
            runtur: </s>
            <s xml:id="echoid-s15598" xml:space="preserve">alia competit in hac doctrina corporibus valde duris, alia
              <lb/>
            minus duris, alia flexibilibus. </s>
            <s xml:id="echoid-s15599" xml:space="preserve">alia flexibilioribus, alia flexibiliſſimis;
              <lb/>
            </s>
            <s xml:id="echoid-s15600" xml:space="preserve">& </s>
            <s xml:id="echoid-s15601" xml:space="preserve">quia corpora ſæpe gradus ſuos flexibilitatis immutant, veluti Ligna
              <lb/>
            faciunt ætate increſcendo, & </s>
            <s xml:id="echoid-s15602" xml:space="preserve">tempore poſtquam cæſa ſunt, variis
              <lb/>
            regulis ſubjicientur, quæ determinatu ſemper erunt difficillimæ; </s>
            <s xml:id="echoid-s15603" xml:space="preserve">
              <lb/>
            quemadmodum etiam in quanam data conditione præſenti ſint cor-
              <lb/>
            pora, ut iis aut hæc, aut alia applicari regula queat: </s>
            <s xml:id="echoid-s15604" xml:space="preserve">Idcirco ſagacita-
              <lb/>
            tem Mathematicorum ſemper aliquomodo eludet doctrina Firmita-
              <lb/>
            tis, nec opinor aliquem datum iri, qui a priori affirmare ſemper
              <lb/>
            poterit; </s>
            <s xml:id="echoid-s15605" xml:space="preserve">datam Trabem, ex dato Ligno confectam, ad medium
              <lb/>
            ſui poſſe ſuſpendere pondus determinandum ope calculi, quod
              <lb/>
            maximum ſit. </s>
            <s xml:id="echoid-s15606" xml:space="preserve">Appropinquare licebit ad veritatem, & </s>
            <s xml:id="echoid-s15607" xml:space="preserve">compara-
              <lb/>
            re noſtra Experimenta cum data Trabe, indeque ope calculi quæ-
              <lb/>
            dam determinare, ſed quæ abludere notabiliter poterunt â verâ Co-
              <lb/>
            hærentiâ: </s>
            <s xml:id="echoid-s15608" xml:space="preserve">Quatenus enim Cohærentia non eſt in ratione </s>
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