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

< >
< >
page |< < (461) of 795 > >|
    <echo version="1.0RC">
      <text xml:lang="la" type="free">
        <div xml:id="echoid-div342" type="section" level="1" n="342">
          <p>
            <s xml:id="echoid-s10564" xml:space="preserve">
              <pb o="461" file="0475" n="475" rhead="CORPORUM FIRMORUM."/>
            terpoſito ſebo attrahuntur, hoc eſt non magis cohærebunt, quam
              <lb/>
            eſt vis attrahens ipſarum ſebi partium, & </s>
            <s xml:id="echoid-s10565" xml:space="preserve">inſtituto experimento ob-
              <lb/>
            ſervatur fractura fieri per medium ſebi, etiamſi cum magnis inæqua-
              <lb/>
            litatibus: </s>
            <s xml:id="echoid-s10566" xml:space="preserve">Si paulo minor copia ſebi interpoſita fuerit, ut ad, ap as-
              <lb/>
            peritates in ſe operari queant, oritur Cohærentia major, compo-
              <lb/>
            ſita ex vi attrahente partium ap, ad, & </s>
            <s xml:id="echoid-s10567" xml:space="preserve">ex vi attrahente partium
              <lb/>
            ſebi ſed quia vis attrahens partium in alta proportione ad diſtan-
              <lb/>
            tias decreſcere videtur, maxima erit Cohærentia, quo minus ſebi
              <lb/>
            inter partes prominentes ap, ad, fuerit: </s>
            <s xml:id="echoid-s10568" xml:space="preserve">ideo etiam quo corpo-
              <lb/>
            rum ſuperficies R S, X Z accuratius congruerint ſibi impoſitæ an-
              <lb/>
            tequam ſebo obducuntur, ſobrie illitæ etiam eo fortius poſtea co-
              <lb/>
            hærent.</s>
            <s xml:id="echoid-s10569" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10570" xml:space="preserve">Admirandum apparet corpora deſcripta adeo firmiter ſecum co-
              <lb/>
            hærere frigida, & </s>
            <s xml:id="echoid-s10571" xml:space="preserve">calida vix, ita ut cylindri, qui frigidi plus quam
              <lb/>
            vi librarum 1400. </s>
            <s xml:id="echoid-s10572" xml:space="preserve">cohæſerint, calidi, eademque pice interpoſitâ, ne
              <lb/>
            quidem pondus librarum 3 ferre potuerint: </s>
            <s xml:id="echoid-s10573" xml:space="preserve">ſed cogita quantum
              <lb/>
            motum ignis partibus communicet; </s>
            <s xml:id="echoid-s10574" xml:space="preserve">1°. </s>
            <s xml:id="echoid-s10575" xml:space="preserve">partes picis fluidas reddit,
              <lb/>
            adeoque tantopere a ſe removet, ut ſe aut non, aut vix attrahant:
              <lb/>
            </s>
            <s xml:id="echoid-s10576" xml:space="preserve">partes metalli præterea concutit, eaſque etiam a ſe removet unde
              <lb/>
            partes tam metalli, quam picis in perpetuo ſunt motu, calente
              <lb/>
            maſſâ, neque ut ſeſe attrahant in iiſdem punctis tempus concedi-
              <lb/>
            tur.</s>
            <s xml:id="echoid-s10577" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10578" xml:space="preserve">In omnibus his experimentis notandum quoque eſt, Cohæren-
              <lb/>
            tiam non penitus pendere ab attrahentibus viribus, quibus tum cor-
              <lb/>
            pora, tum fluida ſemet & </s>
            <s xml:id="echoid-s10579" xml:space="preserve">corpora attrahunt; </s>
            <s xml:id="echoid-s10580" xml:space="preserve">ſed etiam a gravitate
              <lb/>
            Aëris elaſtici, hoc enim ex baſibus excluſo, externus ſortitur ef-
              <lb/>
            fectum, eoſque ſuo pondere tantopere comprimit, ac ſi undiqua-
              <lb/>
            que Mercurius circumfuſus foret, ad eandem altitudinem, quam
              <lb/>
            Baroſcopium oſtendit, quare hoc pondus ſubtrahendum eſt ab eo,
              <lb/>
            quod Cohærentiam totam exhibuit, tumque reſtat pondus expri-
              <lb/>
            mens attractionis magnitudinem.</s>
            <s xml:id="echoid-s10581" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s10582" xml:space="preserve">Exploravi etiam quantum cohæreant cylindri marmorei Tab.
              <lb/>
            </s>
            <s xml:id="echoid-s10583" xml:space="preserve">XVII. </s>
            <s xml:id="echoid-s10584" xml:space="preserve">fig. </s>
            <s xml:id="echoid-s10585" xml:space="preserve">5, quando potentiæ applicabantur uncis A & </s>
            <s xml:id="echoid-s10586" xml:space="preserve">B, atque trahe-
              <lb/>
            bant directione cylindrorum baſibus parallelâ; </s>
            <s xml:id="echoid-s10587" xml:space="preserve">cylindri qui inter-
              <lb/>
            poſito ſebo directe divulſi cohæſerant vi librarum 900, nunc co-
              <lb/>
            dem ſebo interpoſito frigefactique cohærebant tantum vi </s>
          </p>
        </div>
      </text>
    </echo>
Impressum