Bernoulli, Daniel
,
Hydrodynamica, sive De viribus et motibus fluidorum commentarii
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SECTIO QUARTA.
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ad 1; </
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<
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xml:space
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">Orificium autem B eratad orificium A proxime ut 25 ad 16; </
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<
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xml:space
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cuationis repletis antea cylindris fuit in Fig. </
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<
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xml:space
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<
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<
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altera præterpropter 4 hujuſmodi minutorum cum triente.</
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<
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<
s
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xml:space
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">In his caſibus vaſa ſatis ampla ſuere ratione tuborum annexorum, ut
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veluti infinita cenſeri poſſent; </
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<
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xml:space
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">debuiſſetque proin per Regulas paſſim à no-
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bis indicatas aqua effluere per orificia extrema velocitatibus reſpondentibus
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toti altltudini aquæ, ſi modo excipias prima fluxus momenta, quæ ipſa tam
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brevia hic ſunt, ut obſervari non poſſint. </
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<
s
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xml:space
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">Et cum præterea, ut paſſim mo-
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nui, quantitas aquæ dato tempore per tubos effluentis ſimpliciter æſtiman-
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da ſit ex celeritatibus & </
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<
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">magnitudine orificiorum inveni per regnlam §. </
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<
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</
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<
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">exhibitam, tempus evacuationis in primo caſu 4 {1/3} minſec. </
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<
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fere 3. </
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<
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">Quod in experimento majora paullo fuerint obſervata in Fig. </
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<
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ximam partem adhæſioni aquæ ad latera tubi, in Fig. </
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<
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<
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rationi in paragrapho 34. </
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<
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">Phænomena alia in his vaſis ſunt notanda: </
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<
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">nempe cum vaſa ſunt tan-
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tum non evacuata, percipitur ſonus quidem ab aëre, qui tunc aquæ in ori-
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ficio ſuperiori ſe miſcet. </
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<
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">hunc vero ſonum pro ultimo fluxus momento acce-
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pi: </
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<
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">facile fit porro, ut aquæ effluxus concedatur priusquam ad perfectam
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quietem fuerit reducta (nam ab impletione agitantur & </
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<
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ventur aquæ); </
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<
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">tunc autem effluxus admodum retardatur & </
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<
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">cataractæ ſpecies
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interne formatur, continueque aër aquæ effluenti ſe permiſcet. </
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<
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pro lubitu retardari effluxus, ſi in vorticem aquæ agantur antequam effluant.</
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Fig. </
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<
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N M 6 {1/2} lin. </
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<
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</
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<
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">amplitudo vero vaſis continebat amplitudinem orificii N M ducentis
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& </
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<
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<
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bi erat 13. </
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