Full text: Gravesande, Willem Jacob: Physices elementa mathematica, experimentis confirmata, sive introductio ad philosophiam Newtonianam

PHYSICES ELEMENTA tiam, quia in eo caſu perpendiculares ED, ed ſunt æ-
quales.

321.1.

825.
TAB. XXXIII.
fig 4.

322. Experimentum 9.

Per F concipiatur linea horizontalis, quæ tranſit per H; HG & HE ſunt æquales, & ex utroque foramine G
& E aqua proſilit ad L.

322.1.

826.
TAB. XXXIII.
fig. 1.

323. CAPUT VIII.
De Fluido ex vaſis profluente, & Irregularitatibus
in boc motu.

FLuidi quantitas, quæ in dato tempore, ex dato forami-
ne, fluit, ad inſtar fluidi exeuntis velocitatis creſcit: pendet hæc ab altitudine fluidi ſupra foramen, & non in-
tereſt quamcunque partem verſus motus fluidi dirigatur ; & ſepoſitis retardationibus, quadrata quantitatum effluen-
tium ſunt in ratione altitudinum fluidi ſupra foramina .

323.1.

827.
794
799

In tempore in quo corpus libere cadendo percurrit alti-
tudinem fluidi ſupra foramen, exit ex foramine, ſepoſitis
retardationibus, fluidi columna longitudine duplum altitu-
dinis hujus æquans . Foramen ipſum eſt baſis columnæ, & datur: ſi altitudo fluidi ſupra foramen nota ſit, datur
tota columna; tempus etiam facile Experimentis determi-
natur : detecta autem quantitate, quæ in tempore noto exit, quid, in tempore quocunque dato effluat,
non latet.

323.1.

828.
796. 257.
288.

Quantitas autem fluidi, quæ hac computatione detegi-
tur ſenſibiliter admodum excedit illam, quæ revera exit: & quod maxime notabile eſt, Experimenta quæ circa has ve-
locitates, & illa, quæ de quantitatibus fluidorum, certo tem-
pore ex foraminibus fluentium, inſtituuntur, minime reci-
porcantur; & non poteſt quantitas hæc ex nota velocitate
determinari.

323.1.

829.
830.

Fluidum quod juxta foraminis latera exit, attritum patitur &

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