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 MAGNITUDINE TERRÆ.
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XI.</
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Voorſcbooten.</
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Obſervatus eſt angulus a i e # 19 gr. 57?.
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Angulus i a e # 38 gr. 58?.
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Angulus i e a # 121 gr. 5?.
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Datur latus e a in V problemate # 1268, 6, 3.
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Hinc eruitur i e diſtantia inter Noortvicum & Lei- \\ dam # 2338, 2, 2.
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modo quæſita.</
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Aſſumta fuit baſis a e # 471, 5, 0.
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Obſervatus fuit angulus o e a # 88 gr. 26?.
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Angulus o a e # 68 gr. 50?.
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Angulus a o e # 22 gr. 44?.
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Unde eruitur latus a o # 1219, 6, 4.
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Et latus o e # 1137, 7, 1.
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In Triangulo a e u obſervatus eſt angulus u e a # 91 gr. 56?.
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Angulus u a e # 67 gr. 4?.
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Angulus a u e # 21 gr. 0.
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Unde eruitur latus u e # 1210, 5, 0.
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Datis vero lateribus o e, u e & angulo intercepto \\ oeu, datur recta ou # 2338, 0, 0
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Noortvicum.</
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Obſervatus eſt angulus A E B # 106 gr. 3?.
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