Bernoulli, Daniel
,
Hydrodynamica, sive De viribus et motibus fluidorum commentarii
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SECTIO SECUNDA.
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plenus usque in C. </
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<
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dum in æquilibrio (per §. </
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<
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">3.) </
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<
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ſus interiora, quantum premit fluidum vaſis verſus exteriora. </
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<
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preſſio convenit propoſitioni (per §. </
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<
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<
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<
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">II. </
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<
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">Si vero loco puncti G ſumatur aliud H tale, ut linea, quæ eo in
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loco vaſi perpendiculariter inſiſtit, cadat intra vas; </
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<
s
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">tunc poteſt vas integrum
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concipi R H S O N, priori unitum in H, & </
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<
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<
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enim apparet, ſi particula H, quæ utrique vaſi communis eſt, perforetur,
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fluida ſic fore in æquilibrio (§. </
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<
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">adeoque utriusque preſſionem in H eſſe
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æqualem. </
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<
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">Preſſio autem fluidi in R S N ea eſt, quæ indicatur in propoſi-
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tione (per partem primam hujus demonſtrationis) ergo & </
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<
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quod eſt in vaſe A M B. </
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dorum ſtagnantium in caſibus magis compoſitis. </
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proſequi, neque enim inſtituti noſtri ratio id poſtulat, contentus demon-
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ſtrationibus, quas modo dedi, propoſitionum fundamentalium in hydroſtatica.
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</
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<
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">Quod vero attinet ad preſſiones fluidorum non ſtagnantium, funt certe hæ
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altioris indaginis. </
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<
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">Nec dum à quoquam recte determinata fuit preſſio fluido-
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rum, par canales ſeu tubos dato velocitatis gradu fluentium, quamvis id ar-
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gumenti genus tam in rebus aquariis, quam multis aliis ſit utiliſſimum. </
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De his vero prius agere non licet, quam de motu fluidorum commentati
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ſimus.</
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<
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bus ingentia pondera ſuperari poſſunt: </
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">Inde etiam noſcitur vis, quam ſu-
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ſtinent latera tubi, in quo aquæ ſtagnant; </
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<
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">quod argumentum, quoniam
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pertractari ſolet ab hydroſtaticæ ſcriptoribus, nunc percurremus, præſer-
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tim cum multa alia eo innitantur, de quibus nobis dicendum erit.</
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note
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quam aqua infundatur per tubum FRo, cujus crus verticale FR brevitatis
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gratia incomparabiliter longius ponemus, quam diametrum veſicæ: </
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vabitur ſtatim pondus B; </
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