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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ſtylo K, dirigetur verſus eandem cœli plagam, ac in tentamine ſe-
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cundo.</
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gnetis, & </
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ctionibus G L, N M, L G vel M N, cuſpis E dirigetur verſus ean-
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dem cœli plagam, ac in tentamine primo.</
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cui Verſorii cuſpis E applicatur, atque affrictus frat ab E ad F, di-
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rigetur cuſpis E Verſorii, ſtylo K poſtea impoſiti, verſus plagam Au-
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ſtralem, cauda verſus Borealem. </
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appoſita polo Auſtrali Magnetis, & </
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tur cuſpis E verſus plagam cæli Boream: </
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Boream ſpectet, oportebit ſemper caudam F applicare polo Ma-
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gnetis Auſtrali, & </
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dem.</
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tenuis F G, Acus nautica M S, imprægnata vi Magnetica, vel acus
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tenuis vulgaris nova, imponatur ſuperficiei Aquæ, ut ſupra eam na-
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tet; </
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ſpis M Auſtralis attrahetur ab hoc Magnetis polo: </
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Magnes, ut polo Auſtrali A ſpectet idem Scyphi punctum, Acus M S
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intorquebitur, deſcribendo lineam curvam S E M, atque caudâ Sre-
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ſpiciet polum A Magnetis.</
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linierio deſcriptum in
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Experienc. </
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cus ſupra aquam deſcribit; </
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centrum gravitatis, veluti Acus nautica ſupra ſtylum rotatur, verum
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curvam deſcribit, illi ſimilem, quam limatura circa Magnetem con-
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ſperſa format.</
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