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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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AAC
PEtZSICA TR AOT. IV.
num E. COmpOnaneuE raLIOHES,
Compolica erie =5. 2E. igieur luii-
nis porrio in Cuperticie ducta per
L, est maior porcione in Cupetf-
cie ducta per C; igitur maior pOr-
rione in Superticie ducta per LI;
cum scilicer lumen diffundicue,
a tora ri lucis, collecta in cem-
EIO.
PR OP. CXXVTII.
Si sint duae sphaerae lucidae aequales,
sed non aque intensa, spharae actini-
tatis sunt et intensiones: ProbatuE
Facile ex dictis; est enim eadeim
caularum ex efectuum PropOrtiO:
Tlinc radii, vel dictantix, inEra
quas, Cuum lumen difFundune, TunE
in carione suberiplicara intensio-
num; si vero linc inaquales Sphx-
ra lucidae, et non aeque intenta;
Sphaera actinicaris Cune in rario-
ne compolica incentionum, ec
Ephaecarum lucidarum, re perspi-
cuum est ex dictis.
Obleruabis, corpora videri a
nobis, cum inaquali luce, ac
Proinde inaequalirer incenla iudi-
cari; cum camen lucis ina qualicas
a diuecla parrium non lucidarum
admixtione procedat; hinc Aam-
ia pura, quae plures ignIS PALICS
collectas habet, ralde IUCet; ni-
redula vero, ParUI, PFOPTCE Op.
Policam rationem: addc si vis den-
licarem corporis lucidi, quae in co
tancum polica est; quod PaECCS
lucida sinc parum distractae; id cAt,
quod incercepta partes lint den-
Ixe, e parum exrentionis habeant;
V. 8. cum inter parres ignis, PaF-
TES FeFEa InterCIpIUNEuE, non ve-
eo huinoris, vel aeris; nec enim
purandum cst, unum punctum ig-
Cius; quippe cum cuindem Cemper
habear caloris gradum, camdem
raricatem habet.
Obsernabis praetered cancam esse
Sphaera lucidae a stinitatis vim, ve
illa fere ad instar puncti, scilicee
phylice; considerari possit, li cum
amolicudine, e diamerro lux (phae-
Ex acinITaTIS COIMPOIaTUI; quare
phylice loquendo, perinde accipi
porost, acque li in eodem centri
puncto cora ris lucis collecta cller;
vides opinor, ad quantam distan-
tiam perexigua lucerna luum lu-
men diftundac; quis autemnume.
rec diametros lucerna, quas rna
diamerer sphaera activicatis com-
plectieur.
DROP. CXXIX.
Si sphara lueis sit cana, vel ad
instar annuli; lumen aequaliter quo-
que diffunditur: Scilicee à Cuperti-
CIC COnHOZa aMMUII; LIE CNII aN-
nulus, cuins crasicudo sIE CD, _ F18. 17.
CCHEFAI A; SIEDF aistantia, ad
quam producitur radius; cerrum
est Sphaeram actinitaris cerminari
Cuperticie (phaerica, cum liE aequa-
lis quoquouersum ciuldem agentis
applicatio; cur enim longius, per
unum radium, quam per alium,
lumen disFundereEUE, V. G. PeF DE,
quam per LK.
PROP. C Z Z du.
radii sphaera actinitatis; cadentes
perpendiculariter in latera illius,
sunt agnales: V. 8. Sc quadratum
Lucidum AFI, CIE AD ae qualis DC; L18. 10
SIE DII, distantia intra quam. agens
Cuum lumen distundit; dico AM
ee aqualem DH; quod ita bre-
nis modo ellerarius; modo den- virer demonstro; supponatur AM,
aequalis
Silucidum quadracum sit, omnes