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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[271.] XIII. Problema. Triangulum O E V, Amſtelodamum, Leida, Trajectum.
Page: 396 (382)
[272.] XIV. Proelema Triangulum E I V, Leida, Harlemum, Trajectum.
Page: 397 (383)
[273.] XV. Problema Triangulum E I O. Leyda, Harlemum, Amſtelo-damum.
Page: 398 (384)
[274.] XVI. Problema Triangulum I O ?. Harlemum, Amſtelodamum, Alcmaria.
Page: 398 (384)
[275.] XVII. Problema. Triangulum E O ?. Leida, Amſtelodamum, Alcmaria.
Page: 399 (385)
[276.] XVIII. Problema. Triangulum M V L, Oude-Watera, Trajectum, Bommelia.
Page: 399 (385)
[277.] XIX. Problema Triangulum ? V L. Dordracum, Trajectum, Bommelia.
Page: 400 (386)
[278.] XX. Problema Triangulum E V L. Leida, Trajectum, Bommelia.
Page: 400 (386)
[279.] XXI. Problema. Triangulum ? E L, Alcmaria, Leida, Bommelia.
Page: 401 (387)
[280.] XXII. Problema. Triangulum R L V, Dordracum, Bommelia, Breda.
Page: 401 (387)
[281.] XXIII. Problema. Triangulum R S F. Dordracum, Gouda, Rotterodamum.
Page: 401 (387)
[282.] XXIV. Problema. Triangulum R T F, Dordracum, Willemſtadium, Rotterodamum.
Page: 402 (388)
[283.] XXV. Problema. Triangulum R T V. Dordracum, Willemſtadium, Breda.
Page: 402 (388)
[284.] XXVI. Problema. Triangulum T V Q. Willemſtadium, Breda, Berga-ad-Somum.
Page: 403 (389)
[285.] XXVII. Problema. Triangulum R V Q Dordracum, Breda, Berga-ad-Somum.
Page: 404 (390)
[286.] XXVIII. Problema. Triangulum V L Q Breda, Bommelia, Berga-ad-Somum.
Page: 404 (390)
[287.] XXIX. Problema. Datis quadrilateri L R V Q lateribus & diagonio R V, abſque Triangulorum canonibus invenire reliquam diagonium Q L.
Page: 405 (391)
[288.] XXX. Problema Triangulum E I ?, Leida, Harlemum, Alcmaria.
Page: 406 (392)
[289.] XXXI. Problema. Triangulum E V ?. Leida, Trajectum, Alcmaria.
Page: 407 (393)
[290.] XXXII. Problema. Triangulum V L ?. Trajectum, Bommelia, Alcmaria.
Page: 407 (393)
[291.] XXXIII. Problema. Triangulum Q L ?. Berga-ad-Somum, Bommelia, Alcmaria.
Page: 408 (394)
[292.] CAPUT IX. Quantitas unius gradus in maximo Terræ circulo demum definita.
Page: 409 (395)
[293.] PARS ALTERA. DE MAGNITUDINE TERRÆ SECUNDUM MENSURAM ULTIMAM SNELLII ET NOSTRAM. Problema I. Tab. XIV. fig. 2. Triangulum i e a connectens Leydam, Douſæ arcem, locumque inter hanc & Voor-ſchooten aſſumtum.
Page: 412 (398)
[294.] Problema II. Triangulum a e m, nectens Douſæ arcem, pagum Soeterwoudam, locumque inter illam & Voor ſchoten aſſumtum eundem ac in Probl. I.
Page: 412 (398)
[295.] Problema III. Triangulum i e m, jungens Leidam, Douſæ arcem & Soeterwoudam.
Page: 413 (399)
[296.] IV. Problema. Triangulum a i u, jungens Leidam, Voorſchoten, locumque aſſumtum in Problemate I.
Page: 414 (400)
[297.] V. Problema. Diſtantia inter Leidam & Voor ſchoten alio modo quæſita, ope Trianguli A E I nectentis Leidam, Soeterwou-dam & Voorſchoten Tab. XIV. fig. 4.
Page: 414 (400)
[298.] Problema VI. Tab. XIV. fig. 2. Triangulum, imu, conjungens Leidam, Soeterwoudam & Voorſchoten.
Page: 415 (401)
[299.] Problema VII. Diſtantia inter Soeterwoudam & Voor ſchooten alio modo quæſita.
Page: 415 (401)
[300.] Problema VIII. Tab. XIV. fig. 3. Triangulum A E I, Leida, Soeterwouda, Waſſenaria.
Page: 416 (402)
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            <s xml:id="echoid-s6150" xml:space="preserve">
              <pb o="259" file="0273" n="273" rhead="DE MAGNETE."/>
            in Experimentis attendendum ſit, plurimaque nimia feſtinatione
              <lb/>
            peragi, breviuſque deſcribi, quam oportebat; </s>
            <s xml:id="echoid-s6151" xml:space="preserve">tum quam parum
              <lb/>
            liceat ratiocinari in Phyſicis, atque ex uno obſervati genere con-
              <lb/>
            cluſionem generalem formare, id enim omnes memoratos Erudi-
              <lb/>
            tos in errorem conjecit; </s>
            <s xml:id="echoid-s6152" xml:space="preserve">particularis obſervatio omnium erat vera
              <lb/>
            in Ferro illo, quocum Experimenta inſtituerunt; </s>
            <s xml:id="echoid-s6153" xml:space="preserve">ſed non in omni
              <lb/>
            alio cujuſlibet longitudinis & </s>
            <s xml:id="echoid-s6154" xml:space="preserve">craſſitiei.</s>
            <s xml:id="echoid-s6155" xml:space="preserve"/>
          </p>
          <p style="it">
            <s xml:id="echoid-s6156" xml:space="preserve">Animadverti poſtea hoc olim fuiſſe optime memoriæ traditum in
              <lb/>
            Philoſ. </s>
            <s xml:id="echoid-s6157" xml:space="preserve">Tranſ. </s>
            <s xml:id="echoid-s6158" xml:space="preserve">N°. </s>
            <s xml:id="echoid-s6159" xml:space="preserve">214, Anno 1694, â quodam anonymo, qui
              <lb/>
            Gilberti obſervationi hæc addit. </s>
            <s xml:id="echoid-s6160" xml:space="preserve">Sed hæc modo locum habet in non-
              <lb/>
            nullis caſibus, quando enim virga brevis eſt, non formari in ea
              <lb/>
            poterit polus hoc modo: </s>
            <s xml:id="echoid-s6161" xml:space="preserve">Cape filum rotundum, diametri {1/5} pollic. </s>
            <s xml:id="echoid-s6162" xml:space="preserve">lon-
              <lb/>
            gitudinis 10 pollicum, in eo non excitabis polum, licet igni commi-
              <lb/>
            ſeris: </s>
            <s xml:id="echoid-s6163" xml:space="preserve">ſed ſi hoc filum ſit longius, veluti 30 pollic. </s>
            <s xml:id="echoid-s6164" xml:space="preserve">tum candefactum
              <lb/>
            polo concipiendo eſt idoneum. </s>
            <s xml:id="echoid-s6165" xml:space="preserve">Ita cape virgamrotundam, diametri
              <lb/>
            unius pollicis, & </s>
            <s xml:id="echoid-s6166" xml:space="preserve">30 pollices longam, hæc non erit apta concipiendo
              <lb/>
            poto. </s>
            <s xml:id="echoid-s6167" xml:space="preserve">Deinde addit, non datur virga tam brevis, quin apta ſit po-
              <lb/>
            lo, modo ſatis attenuetur. </s>
            <s xml:id="echoid-s6168" xml:space="preserve">Terminus longitudinis requiſitus pro
              <lb/>
            uniuscujusque craſſitie plus increſcit, quam imaginari poſſemus:
              <lb/>
            </s>
            <s xml:id="echoid-s6169" xml:space="preserve">Utinam hæc Experimenta vir accuratiſſimus adnectere voluiſſet!
              <lb/>
            videtur ea de induſtria omiſiſſe, quaſi parum utilia, quæ tamen,
              <lb/>
            me judice, forent inter utiliſſima ponenda.</s>
            <s xml:id="echoid-s6170" xml:space="preserve"/>
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          <head xml:id="echoid-head172" xml:space="preserve">EXPERIMENTUM CXXXV.</head>
          <p>
            <s xml:id="echoid-s6171" xml:space="preserve">Virgam ferream tenuem, quæ Experimento CXXXI. </s>
            <s xml:id="echoid-s6172" xml:space="preserve">inſervierat,
              <lb/>
            iterum candefeci in Igne, quam in volſella ænea arreptam, hori-
              <lb/>
            zontaliter tenui, ut tamen ſemper in Meridiano terreſtri eſſet, hu-
              <lb/>
            jus partem dimidiam, Auſtro obverſam, extinxi in Aquâ, ita ut
              <lb/>
            fere manſerit horizontalis, quo facto, virgæ cuſpis Auſtralis, & </s>
            <s xml:id="echoid-s6173" xml:space="preserve">
              <lb/>
            Borea attrahebat Verſorii polum Boreum.</s>
            <s xml:id="echoid-s6174" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s6175" xml:space="preserve">Ejuſdem virgæ iterum candefactæ partem dimidiam Boreæ ob-
              <lb/>
            verſam in Aquâ extinxi, manente altero dimidio extra aquam; </s>
            <s xml:id="echoid-s6176" xml:space="preserve">tum
              <lb/>
            virgæ cuſpis Borea fugavit Verſorii polum Boreum, & </s>
            <s xml:id="echoid-s6177" xml:space="preserve">attraxit Au-
              <lb/>
            ſtralem, quæ phænomena clarius intelligentur explicato Experimen-
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            to ſequenti.</s>
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