Bernoulli, Daniel
,
Hydrodynamica, sive De viribus et motibus fluidorum commentarii
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HYDRODYNAMICÆ.
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dente, quod de aqua deſcendente: </
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<
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<
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<
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xml:space
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">eo celerius effluit per
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orificium M N, quo amplius eſt, & </
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<
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<
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xml:space
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">ergo etiam fumus
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eo celerius caminum tranſibit, eoque magis ignis in foco accendetur, quo
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altius ducetur caminus, & </
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<
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">quo magis ſuperiora verſus divergit, ſi modo non
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nimis divergat; </
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<
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">quod utrumque experientia confirmat; </
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<
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xml:space
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">Ipſe deinde inſuper
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expertusſum, ſi caminus alicubi perforetur, tantum abeſſe, ut fumus per fora-
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men iſtud exitum tentet, quin potius aër magno impetu irruat, ſeque fumo
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miſcens per caminum aſcendat, non ſecus atque aërem per foraminulum e in
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tubum F G N M (Fig. </
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<
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ri certe copia, aut ſaltem difficilius aſcendet ignisque remittet.</
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<
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">Cæterum duæ ſunt potiſſimum cauſæ, altera aliena altera naturæ rei
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propria, quæ motum aquæ valde retardare poſſunt in fig. </
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adhæſio aquæ ad latera tubi, & </
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velocitas aquæ, nullibi ſibi conſtans in quovis tubi loco mutetur, quæ mutatio
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ſi oriri cenſeatur ab impulſibus infinite parvis aquæ velocius motæ in aquam
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minus velociter motam, apparet ſingulis momentis ab impulſibus his corpo-
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rum mollium aliquid de aſcenſu potentiali perdi, unde neceſſario aquarum ef-
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fluxus notabiliter diminuitur.</
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<
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aquæ non omnes effluunt: </
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cylindricum, & </
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ſit recta.</
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<
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ta ſufficit eſt recta, reliqua E D B utcunque incurvata; </
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plenus effluxura per foramen B, perveneritque ſuperficies aquæ ex C in F,
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quæritur altitudo reſpondens velocitati aquæ in F.</
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<
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anguli H C E ad ſinum totum ut 1 ad g: </
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videbimus contineri problema præſens in altero generaliori, quod ſuprà pa-
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ragrapho 20. </
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ſ - xξ
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