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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<
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xml:space
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">Sed apparet intuenti hanc repulſionis tabulam, quod nec certa
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nec determinabilis proportio inter vires & </
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<
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">diſtantias detur, uti nec
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in attractione inveniri poterat.</
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<
s
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">Attamen multo major eſt attractio quam repulſio; </
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<
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">cum enim in
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immediato contactu fuerit attractio æqualis 340 granis, repulſio
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tantum fuit æqualis 44 granis, & </
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<
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">comparando Experimentum terti-
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um cum hoc, facile patet quanta diverſitas obſervetur.</
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<
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">Volui præterea obſervare, an vires repellentes utriusque poli ejus-
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dem Magnetis forent æquales, aut quomodo variarent; </
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<
s
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xml:space
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">itaque Ma-
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guetem, qui poſtremo inſerviit experimento & </
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<
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">ex Bilance pendebat,
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converti, ut alter polus deorſum ſpectaret, converti quoque
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Magnetem rotundum in tabula poſitum, tumque obſervationes notavi
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ſequentes:</
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Ad diſtantiam \\ Linearum. # fuit repulſio granorum.
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12 # 30
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11 # 32
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10 # 32
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9 # 33
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8 # 34
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7 # 36
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6 # 36
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5 # 34
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4 # 32
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3 # 28
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2 # 27
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1 # 25
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0 # 13
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">Ecce eventum, adeo admirandum, ut dubitaverim in initio, an qui-
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dem Experimenta rite inſtituta eſſent, ſed repetens eadem, atque ma-
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jori attendens cura, omnino easdem inveni repulſiones; </
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<
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">Sunt hæ ad
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diſtantiam 12 linearum magnæ, increscunt usque ad diſtantiam 7 </
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