Gravesande, Willem Jacob 's, Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1

Table of contents

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[371.] CAPUT XIV. De Aëris Elaſticitate.
[372.] Experimentum. 1.
[373.] Machina, Qua Aëris Dilatationes, ut & Vires comprimentes, conferuntur inter ſe.
[374.] Experimentum 2.
[375.] Experimentum 3.
[376.] Experimentum 4.
[377.] CAPUT XV. De quibuſdam aliis Fluidis Elaſticis.
[378.] Experimentum I.
[379.] Experimentum 2.
[380.] CAPUT XVI. De Antlia Pneumatica.
[381.] Machina Pneumatica.
[382.] CAPUT XVII. Experimenta varia circa Aëris Gravitatem & hujus Elaſticitatem.
[383.] Experimentum 1.
[384.] Experimentum 2.
[385.] Experimentum 3.
[386.] Experimentum 4.
[387.] Experimentum 5.
[388.] Experimentum 6.
[389.] Experimentum 7.
[390.] Experimentum 8.
[391.] Experimentum 9.
[392.] Experimentum. 10.
[393.] Experimentum 11.
[394.] Experimentum 12.
[395.] Machina, Qua in Aëre compreſſo Experimenta inſtituuntur.
[396.] Experimentum 13.
[397.] Experimentum 14.
[398.] Experimentum 15.
[399.] Experimentum 16.
[400.] Experimentum 17.
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454310PHYSICES ELEMENTA apertâ januâ, quæ ad illam partem datur, videtur in fig. 2.
Tab. 43. Antliæ hujus deſcriptionem non dabo, ge-
neralia tantum quædam notabo, peculiarem omnium par-
tium explicationem alia occaſione daturus.
Machina Pneumatica.
In fig. 1. Tab. 39. antlia repræſentatur a parte antica,
111095. ſublatis nempe thecæ, cui includitur, januis.
Antlia eadem, ex theca extracta, a parte poſtica, deli-
neatur in fig.
1. Tab. 40. liſdem litteris eædem partes in
utraque figura notantur.
Conſtat antlia duobus cylindris, A, B; in utroque mo-
vetur embolus, cujus partes ſeparatæ exhibentur in C, D, E, F,
(fig.
2. Tab. 40.) .
Partes E, F, cochleâ junguntur, & inter ipſas firmatur
22TAB. XL.
fig. 2.
annulus coriaceus, qui ab omni parte prominet, &
qui,
dum embolus cylindro intruditur, ſeſe ſuperficiei e e ap-
plicat.
Methodus hæc in Anglia in uſu eſt. Corium hoc-
ce in oleo &
aqua macerari debet, ut monuimus in n. 722.
Embolis, quando antliis intruduntur, aqua ſuperinfunditur,
cujus aliquando, exſiccatis paululum coriis, pars quædam in
antlias deſcendit, quod tamen experimenta turbare non po-
teſt;
in quo caſu emboli extrahendi ſunt & per aliquotho-
ras in aqua relinquendi, oleoque probe eliniri debent.
Cauda C emboli, ut fere in omnibus antliis, dentata eſt;
hujus extremitas inferior cc cylindrica eſt, & cochleâ ter-
minatur.
Transmittitur cylindrica pars hæc per cavitatem
cylindricam in prominentia f emboli;
cujus cavitatis dia-
meter parum tantum ſuperat cylindri c c diametrum.
Cum
hoc conjungitur nunc conus truncatus D, qui cochleam
fæminam continet, &
firmatur hic transverſâ cochleâ g:
poteſtque cauda C elevari &
deprimi per ſpatium trium
partium quartarum pollicis, ipſo embolo immoto manente.
Emboli ambo moventur agitatione rotæ R, cujus motus,
33TAB. XXXIX.
fig. 1.
dum it &
redit, parum deficit à tertiâ circuli parte.
44TAB. XL.
fig. 1.
Vaſa exhaurienda laminæ L L imponuntur, & hæc

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