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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)
# Folio 435, page id 779785487:0493
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LIB. II. DE ALZERA YTOHE.
dearum B 8, ad quadeatum BNI;
id est vE r. 2d 4. Pari modo lu-
men in M; est ad lumen in pos
ee quadrarum Bu, ad quadra-
tum BM; idem dico de aliis Fa-
diis: pauca haec adnocare rolui,
de hac laminae admorae hypoche.
Ei, quae Scieu diona nonneni-
ni forre videbuneur: Ced iam la-
minam remonco, rbi CaImeM vuUI,
quod omist, adiunsero, scilicee
propcer radiorum dittulionem, quae
Fere in infinicum exrenditur, cum
distrahantur radii, ita ve inteF
radios, sic actu luminis priuatio;
cerre in hac diffusione, lumina
Lune in quadruplicara distancia-
rum, permutando; nam catione
superticierum, Ceu distractionis
radiorum, Cune in duplicata, ia-
rione vero lingulorum radiorum,
Cune eriam in duplicaca; isieuE
ratione veriulque, in quadrupli-
cara, Ccilicer permurando; (I
camen lumen corpus csler, lu-
mina essene cantum in duplicata,
VE Patet.
PROD. CZVTI.
Licet nulla lamina interpona-
eur, radii, qui ab eodem puncto
superficiei sphaera lucida prosicis
euntur, inaeguales sunt: Sic enim
punctum B Spiiaera lucida A, SIF
TYX arcus vlcini circuli (phaeEE
actinicacis; radii a puncto B pEO-
Fecti CuneBH, BS, BT, BV,
BZ, RC. nempe quodlibet pun-
ctum splxrx lucidae in omnia e
lingula puncta sphaera actiniraris
2gIC, per prop. 1II. acqui linex
BN, BS, BT, ec. inxquales
FUIME, VE PaceE; CA enim B H om-
nium brenissima: POrrO PariO a
priori, CuF (IF TAHEA BZ, quaM.
cumuis minori lineae, inera (ph X
ram lucidam respondeat, immo
rui cancum puncto, E tangens
est, inde ducitur, quod linca
B Z, minus secedar a (phaerae lu-
cidae cenero, quam BN; V. 8.
Puncca y _ B a CCHTIO A aeque
distane, igieur lumen aequeinten-
Cum verique inest; idem dico de
punctis Z, e s; Y eB; led in
hoc nulia est disticultas.
PROP. CXVTII.
Diametri sphaerarum actiuitatis.
sunt vc diametri sphararum luci-
darum agne intensarum: Cum
enim sic eadem caularum, e efte-
ccuum proportio; cerre eadem est
Ephaerarum activicaris, quae (phae-
rarum lucidarum; nempe illa 2d
effectu, hx vero ad caulam per-
tinene; led si (phaerae proporrio-
nales LUHE, diaCEEOS PFOPOETIO.
nales elle necesse est; V. 8. SC F1S. 24.
Sphaera lucida AB, cui respondet
Sphaera actinicaris AD; sic alia
Iphaera lucida AC, cui respondee
sphaera actinicatis AF. ; CCrTC rE
(phaera AB, est ad AD, ica, (phae-
ra AC, est ad AF; igicuE ve Sphae
Fa AB, ad AC, ica sphATA AD,
ad A F; igitur ve radius AF, ad
AC, iCa AV, ad AF.
DROP. CXIZ.
Tlinc bene reddieur ratio; cus
quodlibet sphara lucidae punctum ex
quolibet puncto videatur: Cun
enim quoquoversim, vique ad
vlrimam Ephaera luperticiem, r2-
dios diffundat, cerre non mi-
rum est, si ex illo puncto videatui,
2d quod radios emitrit: de ve
ro inde omnino a posteriori (ve
niume) evincicur, cadios diftundi a
Lingulis