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 TUBIS CAPILLARIBUS VITREIS.
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a preſſione eadem poſſet ſuſtineri altitudo Aquæ FB, & </
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multo major eſt: </
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Aquam ſuſpendentis ex anguſto Tubo aut orificio, ſequentia Expe-
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rimenta Jurinus fecit.</
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">jus extremitas C abeat in Tubum capillarem, hoc impleatur Aqua,
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dein invertatur, & </
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manebit totum vas ABC impletum.</
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">Sit vas cylindricum BCFG, cujus pars ſuperior F A G
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deſinat in Tubum capillarem, impleatur Aqua ad altitudinem FG, ita
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tamen ut non attingat partem ſuperiorem infundibuli AFG tum tubus
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A modo ſuperius humectetur digito. </
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">manebit Aqua in hoc vaſe ſuſ-
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penſa ad altitudinem FG, ſi loco Aquæ ſumatur Mercurius, idem
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ſit experimenti ſucceſſus, niſi quod Mercurius ſtet depreſſior.</
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<
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">Hæc Experimenta ſunt eadem ſive inſtituantur cum Aqua vulgari,
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ſive cum Aquâ, ex qua omnis eductus eſt Aër: </
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rentur hæc phænomena pendere a denegato aëris introitu per ori-
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ficium ſubtilius C in Fig. </
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pra vel contra ſuperficiem Aquæ inferiorem, eam in vaſis ſuſtine-
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ret: </
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">ſed huc non advocandam eſſe Aëris preſſionem Jurinus alio
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probavit Experimento.</
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una extremitas in apicem capillarem deſinebat: </
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batur Aquâ, tum ponebatur ſub recipiente, ex quo omnis edu-
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cebatur Aër, Aqua manente ſuſpenſa ad eandem in Tubo altitudi-
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nem: </
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">non ergo huc preſſio Aëris advocari poterit, quia, ab hac ſi
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penderet phænomenon, in vacuo Aqua omnis ex Tubo ſuâ gravita-
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te effluxiſſet.</
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