Gassendi, Pierre, De proportione qua gravia decidentia accelerantur, 1646

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1æquari vni integro (cuius ſemper relinquitur inexhaustum
aliquid) niſi priùs omnia, hoc eſt infinita, fuerint numerata.
A. p.
14. in 21.
ART. XIII. XIV. XV. XVI. XVII.
XVIII.
De Poſtulato Galilei circa motum
ſuper æque-altis, non æque-inclinatis planis.
Cùm experientiâ conſtet accelerationem eadem ratione
fieri, ſiue ad perpendiculum graue decidat, ſiue ſupra planum
inclinatum delabatur; candidè egit Galileus, dum aſſumens
Gradus velocitatis eiuſdem mobilis ſuper diuerſas pla­
norum inclinationes acquiſitos tum eſſe æqualeis, cùm
eorumdem planorum eleuationes ponuntur æquales:
id extulit, non vt demonſtratum (tametſi Torricellius posteà
demonſtrationem attulerit) ſedvt eatenus probabile, quatenus
deductæ ex eo concluſiones cum experientia conſentirent.
Id
tamen R. P. exagitat, vti & confirmationem, non incongruè
alioquin petitam ex pendulis, quæ longioribus, breuioribuſque
filis illigata, & ex eadem tamen altitudine vibrari permiſſa, ad
eandem proximè aſſurgant, ſicque debeant omnia parem impe­
tum (ſeu velocitatem) deſcendendo acquirere: vtcumque per
arcus inæqualeis procurrant.
Neque verò etiam R. P. licet
difficilia obiiciat, proptereà infirmat Galilei experimenta (qui­
bus Author habet aliqua ſimilia) ad probandum grauia tam
decidentia, quàm delabentia conficere primo tempore vnum ſpa­
tium, ſecundo tria, tertio quinque, &c. A p.
21. in 32

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