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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# Exp. II.
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">Quantum variat horum 4 laterum attractio? </
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ſubſtantia homogenea, ſi polorum axis jaceat inter ambas ſuperficies
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parallelepipedi intermedius, an non 4 laterum attractiones deberent
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eſſe æquales? </
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">nullam video rationem, quæ non ſtabiliret hoc ratio-
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cinium, verum Magnes, quo in examine uſus fui, tamen ita vide-
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batur comparatus; </
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<
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">nam an accuratiſſime ita ſe habuerit, nullo modo
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me determinare poſſe fateor: </
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rimum diſcrepant, quæ virium magnitudinem oſtendunt.</
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& </
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">æque ambo poli unius Magnetis ambos repellunt alterius polos;
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<
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">ſunt tamen alii poli, qui ſe repellunt, quam qui ſe attrahunt: </
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">Deſiderio
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capiebar indagandi quomodo repulſiones Magnetum eſſent comparatæ,
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an majores, an minores forent, quam attractiones, an etiam in pro-
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portione quadam diſtantiarum vel in inconſtanti? </
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opinabar me abunde voto potiturum juxta methodum in attractioni-
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bus adhibitam; </
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">ea tamen diſſerentia obſervanda erat, ut cum antea
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Lanci eſſent imponenda ponduſcula, quæ attractionibus æquipolle-
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bant, nunc ponduſcula Magneti eſſent imponenda, ut tanto gravior
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fieret, accederetque ad inferiorem Magnetem, quo plus ab ipſo re-
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pellebatur, hoc eſt, elevabatur ſurſum.</
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">Magnetem NO majorem rotundum iterum immobilem poſui in
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menſa; </
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