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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infra horizontem in regionibus Europæis, angulum aliquem cum eo
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faciendo; </
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tur.</
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<
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xml:space
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Inclinationem, Gilbertus Lib. </
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<
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<
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1576, teſte Gilberto Lib. </
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<
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<
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Normannus, nauta peritus & </
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<
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clinationem magnetici ferri invenit: </
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<
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xml:space
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">ante Gilbertum etiam Gui-
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lelmus Borough in præfatione libelli de variatione pyxidis, Nor-
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mannum inventorem deprædicavit: </
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<
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ſuo Tractatu New Attractive Cap. </
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cidit: </
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bi æquilibratæ, ſimulac ſuper Magnete ducebantur, cuſpide Boreâ
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infra horizontem inclinabant, quamobrem oppoſitæ parti Acûs te-
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nebatur tantillum ceræ affigere, quæ ſuo pondere æquilibrium re-
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ſtitueret; </
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<
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</
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<
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">ſed paulo plus per infortunium, hinc perdito æquilibrio indignatus,
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ope machinæ alterius explorandum prius duxit, quantum Acus, prius
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æquilibrata, infra horizontem deprimeretur, poſtquam vim Magne-
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ticam accepiſſet, machinam perfecit, quam deſcripſit in Cap. </
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libelli.</
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<
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in hac regione â parte Septentrionali, quare ut horizonti parallela
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maneat, artifices caudam Auſtralem graviorem cuſpide Borea fabri-
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cantur: </
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ropa ſurſum elevata erat, infra horizontem inclinat, cuſpide Borea
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ſurſum ſpectante: </
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ſoriis uti tenentur, quorum cauda eſt cuſpide levior: </
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tium erit de Inclinatione Acus prolixius agere, cum â recentiſſimis
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Philoſophis in lucem iterum ê tenebris protracta, maximi in doctri-
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nâ Magneticâ, & </
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eſſe momenti; </
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dæ nihilominus doctrinæ Magneticæ inſerviet.</
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