Bernoulli, Daniel
,
Hydrodynamica, sive De viribus et motibus fluidorum commentarii
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SECTIO DUODECIMA.
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<
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xml:space
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">PReſſiones, quæ dictis expoſitæ fuerunt paragraphis, facili experimen-
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to confirmari poterunt, ſi vas, quale figura quadrageſima tertia ſi-
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ſtit, quodque §. </
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<
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<
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">deſcribitur, confici curetur, ejusdemque
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laminæ L Q tubus vitreus verticaliter implantetur, cujus orificium utrum-
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que apertum ſit: </
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<
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">obſervabitur ſic obturatis foraminibus H & </
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<
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ſtemate aquis repleto, aquam in tubo vitreo ad libellam A B aſcendere, aut illam
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propter naturam tubulorum capillarium tranſcendere. </
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">Dein autem ſi digitus ab
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orificio N removeatur, obſervabitur, aquam in tubo vitreo deſcendere & </
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captis menſuris, invenietur, ni fallor, altitudinem aquæ in tubo vitreo re-
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ſiduam (detracta altitudine virtuti tuborum capillarium debita) eſſe =
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{αα x LB - γγ x NQ/αα + γγ}, uti dictum eſt §. </
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<
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rarum explicantur.</
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<
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<
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<
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">N digitus removeatur, tunc erit ea-
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dem altitudo aquæ in tubo vitreo reſidua talis, quæ §. </
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<
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<
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<
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liter poteſt tubus vitreus laminæ Q N inſeri, isque deinde inflecti, ut cognoſ-
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ci poſſit, an preſſiones quoque in lamina Q N recte definitæ fuerint.</
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<
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tinent ipſemet coram Societate noſtra inſtitui & </
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<
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pedum, altitudo 14. </
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fiſtulam accurate cylindricam ex ferro fabricatam infixi horizontaliter. </
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<
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autem factus erat tubus iſte ferreus: </
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<
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(Fig. </
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<
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<
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78 & 79.</
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foraminulo m erat perforatus, ibidemque tubulus D E pariter ferreus ſex li-
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neas longus acſesquilineam in diametro habens afferruminatus erat, ita </
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