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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DE MAGNETE.
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Laërt. </
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<
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<
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<
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xml:space
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">Philoſophi Florentini, ſuis ſapientes obſervatis,
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deprehenderunt in Experimentis cum Magnete captis in Experien-
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ces Academie del Cimento pag. </
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<
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ſiſſe, quæ penetraverat per Mercurium, per capſulam ligneam plenam
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arena, vel limaturâ metallorum (excepta ea ex ferro) per parallelo-
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pipeda ſolida lapidea, marmorea, per 50 patinas aureas ſibi impofitas,
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tandem per ſpiritum vini ardentem Cl. </
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<
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xml:space
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Magnete Experimenta, eoſdemque effectus adnotavit, vide ejus Ver-
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nuftige Gedachten Tom. </
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<
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<
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xml:space
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">per aquam tranſiiſſe vim Magnetis quoque probavit.</
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<
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xml:space
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">Poſtquam Kircherus vim Magnetis adeo permeantem per cuncta
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corpora cognoverat, adverſus Epicurum, ponentem Atomos circum-
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fluentes & </
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<
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">pellentes Magnetem cauſas omnium effectuum, in hæc
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verba erumpit Lib. </
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<
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<
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ma atomorum corpuſcula æqua facilitate & </
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per duriſſima & </
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<
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">ſolidiſſima quævis corpora in ferrum traducet? </
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de veriſimile eſt hanc circumpulſionem non in Magnete, ſed in E-
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picuri cerebro exiſtentem, hanc abſonam prorſus opinionem pepe-
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riſſe. </
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<
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">In eundem tamen ſcopulum impegerunt plurimi recentiores
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Philoſophi, qui vel ad hoc, vel ad aliud Fluidorum, aut Effluvio-
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rum corporeorum genus recurrunt, ut Magnetis actiones explicent;
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</
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<
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">ſed quantis, præter allatas, premantur difficultatibus ejuſmodi hy-
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potheſes, in ſequentibus demonſtrabitur.</
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<
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">Fingamus enim dari Effluvia, vel Fluida exeuntia ex magnete,
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quæ corporea ſint: </
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Magnetem odore trahere ferrum dixit. </
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ſit Magnes A, cujus Effluvia ferantur directione A E, & </
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præterea corpus B D C, facillime mobile fupra cardinem D, quem-
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admodum Acus nautica verti ſolet; </
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tallo denſiſſimo; </
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ſolidis, quatenus igitur effluvia A E incurrunt in partes ſolidas
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metalli B C, (neceſſario enim nonnulla incurrunt in ſolidas partes)
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eas movebunt, adeoque pars B D debebit elevari in K, & </
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primi in L: </
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nus poroſum: </
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fuerit Acus ex quolibet metallo, Ferro excepto, verum manet </
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