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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ri ac demonſtrari phænomena, quæ Magnetes & </
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<
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xml:space
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ſpicienda præbent? </
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<
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xml:space
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">Quod ſi enim ſenſus conſulant, neque Viſu, neque
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Tactu, neque reſiſtentia, neque pondere Fluidum obſervatur magneti-
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cum; </
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>
<
s
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xml:space
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">adeoque cum id advocatur ad effectus explicandos, non niſi ex
<
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mera hypotheſi aſſumitur, nequaquam demonſtratur; </
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>
<
s
xml:id
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xml:space
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">quonam igitur
<
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fundamento ſevero rerum indagatori ejusmodi dari Fluidum perſuaderi
<
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poterit? </
s
>
<
s
xml:id
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xml:space
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">Quod ſi deinde maximos in arte viros conſulamus, qui noſtra
<
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ætate quamplurimum operæ in explicandis Geometrice effectibus mag-
<
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/>
neticis poſuerunt, fluido tamen ad id uſi, hos vehementer ſuum torſiſſe
<
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/>
animum inani opera & </
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>
<
s
xml:id
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xml:space
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">fruſtraneo labore, deprehendimus, atque adver-
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ſus Hydroſtraticas leges inceſſiſſe, neque tamen adhuc ſibi ipſis ſa-
<
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tisfeciſſe; </
s
>
<
s
xml:id
="
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xml:space
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">teſtimonium Præſtantiſſimi Whiſtoni pro omnibus ſufficiat,
<
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qui non dubitavit profiteri palam, ſe nullo modo Mechanice explica-
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re poſſe phænomena magnetica, neque meditando invenire ſe po-
<
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tuiſſe ejusmodi motum Fluidi ſubtilis, quod vim Attractricem in
<
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proportione illa, quæ inter Magnetes a ſe ſejunctos obtinet, operaretur:
<
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</
s
>
<
s
xml:id
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xml:space
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">arbitror autem nec dari Fluidum magneticum, niſi in animo illud
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fingentis, multo minus ex eo demonſtrari poſſe phænomena, quæ in-
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ferius afferam: </
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>
<
s
xml:id
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xml:space
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">Agit Magnes in Magnetem, aut in Ferrum, vi attra-
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ctrice, quæ quomodo comparata ſit in iis corporibus, non intelligi-
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tur, uti nec ejus cauſa, unde hic ſi ullibi, recte convenit dictum
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Ciceronis, facilius quid non ſit, quam quid ſit, de hujusmodi rebus
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poſſe confirmari.</
s
>
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</
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<
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<
s
xml:id
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xml:space
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">Mirabitur procul dubio Lector, me aliquid conſcripſiſſe de eo
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corpore, cujus nonnullos quidem effectus intelligo, ſed quorum
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cauſam me ignorare confiteor, de quibus proinde non multum diſſe-
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rere, & </
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>
<
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xml:space
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">pauciora adhucdum demonſtrare potero, de quibus idcirco non
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niſi valde ſterilis doctrina erit; </
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xml:space
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">in qua tractanda vix Philoſophi functus
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ero officio, cum nullam hypotheſin condidi, ex qua effectus explicem;
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</
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xml:space
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">Hic intelligat volo, me eam profiteri Philoſophandi methodum, quæ
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rejectis omnibus Hypotheſibus, nihil ponit in Phyſica firmum ratumque,
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niſi quod abſolute demonſtratur: </
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<
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xml:space
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">neque cum illis me conſentire, qui regu-
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lam ſtabiliverunt. </
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xml:space
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">Præſtantius eſſe opinari de rebus difficillimis, quam
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clara tantum velle ſcire & </
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<
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xml:space
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">demonſtrare, aut ignor antiam fateri: </
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xml:space
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">Quid enim
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differt Opinio aut Hypotheſis a fabula? </
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xml:space
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">utraque chimæra ludibundi
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eſt ingenii; </
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xml:space
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