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# Title: [Physica, Id Est, Scientia Rerum Corporearum, In Decem Tractatus Distributa] Physica, Id Est, Scientia Rervm Corporearvm, In Decem Tractatvs Distribvta (shelfmarks Leibn. Marg. 7:1-2; ZEN Leibn. Marg. 7:1-2)
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YIB. III. DE LVCE EZ LVMINE.
communi concurrit, destructo priore collectionem, commintionem, de-
lumine; vide prop. 43. l. 1.
PROP. LV.
Quando duo lucida actione com-
muni primo instanci lumen pruduxe-
runt, si deinde secundo, alterum re-
moneatur; vel extinenatur, non
tantum prioris luminis pars, sed to-
cum prius lumen destruitur, nouum-
que minus producicur: vide prop. 44.
ib. 1.
PROP. LV
Fux non aeir in suum subiectum:
vide prop. 45. L. 1. in aqua haec iam
Probata cAt.
PROD. LVII
Flamma loneius lumen diffundit,
quam carbo accensus: Duia in AaM-
ma plures parces ionis collecta
Cune, quam in carbone; vide prop.
51. lib. r. nempe in carbone, non
modo parces ionis à parcibus hu-
moris leparantur; Ced etiam a par -
EibUS CCFER; In AAMIMA VerO, a
parcibus humoris, vel raporis can-
cum, qui caloris vi, Facile auolar;
ac proinde parres ignis magis ac
magisrniuneur.
PROP. LVII
Tumen restectitur, es refringitur:
Verumque paret, manifesta expe.
riencia; vide prop. 61. lib. 1. Ced
de retractione de reRlexione cract. 4.
Fuse agemus: obleruabis autem
mulca hic fuisse perstricta porius,
quam explicaca, ne iam dicta re-
pecenda Culciperem; quodcibile
etor erudire ac mihi nauscam ma-
ximam acculisset: Cunc criam alia
mulca, quae perrinene ad diffulio-
nem, refexionem, retractionem,
cullationem luminis, Xc. de qui-
bus loco cicaro ex professo agam;
iam vero proposicionum seriem
Prolequor, de paulo accurarius de-
nonstro ea qua in lib. 1. demon-
AratA NOn FUCrUNE.
PR OP. L. IX.
Lumen, proprie loquendo, non
habet contrarium: Ouia CONErA-
sium dicie aliquid posiciuum, ve
COnsat ex MCcapH. l. 19. Ced nihil
policiuum assionari porest, quod
lumini concrarium sic; licer enim
cenebrae ruloo dicaneur contrarixe
lumini, quod etiam expressis ver-
bis alterie PhiloCophuS, nOn tamen
Cune proprie loquendo contraria,
quia nihil posiriuum dicune, cum
sinc mera luminis priuacio, vel ab-
Sentia: Dices Frigus eNe COntra
rium lumini, quia est concrarium
calori, qui cum lumine idem quid
C: Relpondeo Frious cHC CONCTZ-
rium calori, re calor est, non re-
so ve lumen est; nempe in cancum
est concrarium, in quancum Fri-
sus divicir parres ignis, quae c2-
lorem practane; v. 9. in anu, in
aete, in ferro calido; ac vero lu-
men quod purum calorem secun-
darium dicie, modo illius caula
Aec inceora, huinsmodi divisionem
non timec; cum etiam huiusmo-
di parciculas diuidences, Scilicet
humoris e Mercurii illuseret, igi-
cur lumini Frigus. non cA COnETA
rium, proprie loquendo: Dices.
dum Frious exringuic Ferrum can-
dens, non minus lumen destruieur,
quam calor secundarius; igieur
non minus est concrarium lumini,
quam calori: Respondeo in ferro
candence dectrui videtur lux, cum
2 CaIeN