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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ſem, ſperabam me acquiſiturum partes inertes nullaque vi donatas
<
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attractrice, aliaſque in quibus omnis vis hæreret; </
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croſcopio, vel alia methodo examinatis, quænam fabrica Magne-
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tis, & </
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animi meditationem, ut Magnetem, quem corpus compoſitum
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tum ex aliis ſupponebam, in ſua ſimpliciora diſſolverem: </
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<
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in his Tentaminibus mihi aliquomodo præiverat, ſed tam paucos
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progreſſus faciendo, & </
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<
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xml:space
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mina, ut ex Boyleanis nihil vel parum lucis foenerari potuerim:
<
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</
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<
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xml:space
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<
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<
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Candefecit Philoſophus diverſos Magnetes in Igne, tum in eo-
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rum ſubſtantia magnam animadvertit heterogeneitatem: </
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xml:space
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inter refrigerandum cadebant in pulverem; </
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alii integri perſtabant; </
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<
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xml:space
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">alii diffracti intus apparebant inſtar ſquam-
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marum Ferri; </
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<
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parallelas; </
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tis ſulphuris foret, emiſerunt, etiamſi id affirmet Del Porta, ſup-
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ponens vim Magneticam in Sulphure conſiſtere. </
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xml:space
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">Ex qua diverſiſ-
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ſima Magnetum igni commiſſorum forma conſtat, varias ad eos
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componendos concurrere ſubſtantias, quarum nonnullæ plus, aliæ
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minus volatiles fiunt. </
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<
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xml:space
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diverſiſſimas ineundo vias, ut, quod una non eruitur, altera in-
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veniatur.</
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">Quia Magnes integer in Igne aliquamdiu toſtus, vim attrahendi
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Ferrum eo uſque amittit, ut limaturam non attrahat, attamen agat
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in Verſorium 6 pollicum Magneticâ vi imbutum; </
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poſſet penitus omnis vis attractrix expelli; </
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poſſe fieri, quando Magnes in pulverem ſubtiliſſimum prius redu-
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ceretur, tumque igni committeretur. </
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<
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num, præſtantiſque virtutis, nigreſcentis coloris, qui in mor-
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tario in pulverem ſubtiliſſimum contuſus fuit: </
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vere datum iri partes, quæ â Magnete attraherentur, alias, quæ </
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