Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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MATHEMATICA. LIB. II. CAP. II.
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propter actioni æqualem reactionem , æqualem
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particulæ iſtæ preſſionem ſuſtinent. </
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fluidis omnes partes verſus ſit æqualis, fundus & </
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que premuntur ac partes fluidi vicinæ actio ergo hæc ad
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inſtar altitudinis fluidi’ creſcit , & </
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<
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">711. 708.</
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profunditatem eſt æqualis, pendetque ab illa altitudine, & </
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nullo modo a fluidi quantitate. </
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<
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xml:space
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dine, & </
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">fundi magnitudine, æqualis ſemper erit actio in
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fundum, utcunque mutetur vaſis figura. </
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<
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">In omni caſu preſ-
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">721.</
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ſio, quam patitur ſuperficies quæcunque, valet pondus co-
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lumnæ ex fluido, cujus baſis eſt ipſa ſuperficies, & </
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<
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">altitudo,
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in ſingulis punctis, diſtantia verticalis ſupremæ ſuperficiei
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fluidi ab his punctis.</
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<
s
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">Talem eſſe in vaſe priſmatico verticali preſſionem in fun-
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dum non facile in dubium quis vocabit; </
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<
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xml:space
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">nam totum fluidi
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pondus, & </
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tudine fluidi, & </
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">baſi vaſeos, non mutatur preſſio in fun-
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dum, licet, mutatâ figurâ, vas majorem aut minorem flui-
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di copiam contineat; </
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<
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">quod cum experimentis congruit, & </
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ex natura fluiditatis deducitur, ut, poſt expoſita experi-
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menta, dicam.</
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">Qua Experimenta de Fluidorum Preſſione inſtituun-
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tur.</
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<
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xml:space
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">Cylindrus cavus A, ab utraque parte apertus, ab inte-
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riori parte exactiſſime politur; </
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.
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fig 7. 8.</
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do parum excedunt tres pollices cum ſemiſſe, & </
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cylindro ad altitudinem trium pollicum ponderat libram u-
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nam, ope cochleæ ei additur annulus E, ut a tripode ſu-
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ſtineatur. </
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<
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">Pedes autem cochleis annulo junguntur, ut, ubi
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neceſſe hoc eſt, tollantur.</
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<
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">In cylindro datur ſundus æneus mobilis F, cum quo an-
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nulus G, etiam æneus, ab interiori parte cochleam conti-
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nens, conjungitur; </
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nulus coriaceus ab omni parte fundum quantitate ſemi-pol-
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licis excedens; </
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