Schott, Gaspar
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Mechanica hydraulico-pneumatica. Pars I. Mechanicae Hydraulico-pnevmaticae Theoriam continet.
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1657
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terminum non deſcendant æquè velociter, revera & mathema
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ticè, quemadmodum ſentiunt Galilæus Dialogo 2. de Syſtem.
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Mundi, Ioannes Baptiſta Balianus lib. 1. de motu naturali gravi
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um ſolidorum in Præfat. Nicolaus Cabæus lib. 1. Meteoror. textu
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17.
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5. & 6. Arriaga diſput. 4. de Generat. ſect. 5. ſubſect. 3.
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Maſtrius, Bellutus, & alij (quod ego falſum exiſtimo, mathe
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maticè loquendo, cum Patre Ioanne Baptiſta Ricciolo, qui
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tom. 1. Almageſti Novi lib. 2. cap. 21. Propoſit. 2. & lib. 9. ſect. 4.
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num. 24. aſſerit,
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duorum gravium eiusdem ſpeciei & figuræ ſea inæ
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qualis molis ac ponderis, ex eadem altitudine momento eodem dimiſ
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ſorum, illud naturali motu citiùs deſcendere ad eundem terminum, quod
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eſt gravius;
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ubi etiam Experimenta multa diverſis annis coram
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multis viris doctis incredibili diligentiâ peracta Bononiæ refert
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num. 13.) tamen in parvis altitudinibus, quales ſunt tuborum
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in omni ferè caſu, tam exigua eſt differentia velocitatum, ut pro
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eâdem ſeu æquali cenſeri meritò poſſit. </
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Poriſma I.
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>SEquitur hinc, tubos non ſemper plenos, æquales quoad alti
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tudines, & baſes, inæquales tamen quoad foramina, evacua
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ri inæqualibus temporibus, hoc eſt, citiùsillum, qui maius ha
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bet lumen;
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tempora, quibus evacuantur, inter ſe ut lu
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mina, hac tamen conditione, vt per foramen maius citiùs efflu
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at tota aqua, quàm per foramen minus,
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; citiùs per majus,
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quàm per minus, quantò foramen maius ſuperat minus. </
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hoc eſt quod dicemus Propoſit. XVI. ſequente, tempora ſcili
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cet in dicto caſu eſſe reciprocè vt lumina. </
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Poriſma II.
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>SEquitur præterea, ex tubis non ſemper plenis, quorum æ
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quales ſunt altitudines, at inæquales baſes, ſed totæ apertæ,
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effluere totam aquam æquali tempore; quandoquidem vtrobi
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que columna aquea, licet inæqualis ponderis ac molis, æquè
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velociter deſcendit quoad ſenſum, per idem ſpatium. </
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