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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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4. 4. 2
DAZSTCA YR ACT. IV.
lelipipedi, parallelipipeda; hinc aegnales, sed dissimiles: Patet ex
Pacis improprie spheram actiuita.
ris appello illam, quae Sphaera non
est, led hoc nomine, quia iam du.
dum rlus inualuit, omnem lumi-
nis diftutionem, sphaeram actiui-
caris appello.
PROP. CXXXIII.
Trianeulum lucidum habet sphae–
ram actinicaris trianculo simili ter-
minatam: Sic enim triangulum
618. 20. lucidum AD L, Cicque BE dif-
Fusi radii maxima exrentio; haud
dubie LF cric aequalis, lunt enim
AED, AFD, aequalia, &e 2b
dictis; v. 8. S lic circulus luci-
dus xequalis quadraro, haud du-
bie sphaera illius, circulo; huius
rero, quadratO TCTHVIMATME, VE
constat: v. 9. Sc Ephaera actinica-
eis circuli, cuius radius (IE AD, e
centrum A; CE quadrarum luci. FIG, LF.
dum, aequale circulo; vadius il-
lius (phaerae actiniraris erit AC; ita
re quadrarum FF, sic xquale cie-
culo AB C: idem dico de omni
alia houra; hinc eadius circuli
eAt lonsior radio quadrari, sc-
cundum perpendiculum; quod in
latus cadic; breuior camen secun-
dum diagonalem; v. 8. AD est
eodem lucido; producatur E F. maior AC, sed minOE AE: hinc
in G, dueatuE IIDO, dico
quod lucidum aget in C, quod
eodem modo probatur, quo lu-
Pra PEOP. : 3. Probara Fuie; hinc
terraedri lucidi sphaera aetinica-
eis cerraedri superticie rermina-
tur: idem prorlus dico de aliis
planis, e Colidis, pro quibus
eadem rario milicat; Elinc da-
ra sphaera actiuicatis Aoura, Facile
lucidi figura habebicur, et vicisim.
PROP CZZZIV.
Cylindri lucidi sphara actinita
ris terminatur superficie cxlindrica
es coni, conica; Quod Certe co-
etem inodo probatur; vnde lu-
pra; sic elliplis elliprica; _ Om -
ne aliud Agura genus ex luci
do, in sphaeram actinicaris Era-
ducitur.
Sphaera aesmitatis. lucidorum
dusbotm. sect dissimiluum. Sootot.
re est diamerer circuli lucidi ad
diameerum quadrari lucidi X
qualis, ita est diameter circuli
Sphaera actinitaris illius; 2d dia-
metrum quadrari spharae activi-
caris huius; hinc li rectangulum.
lucidum in arcum lunerur, incurua-
tur etiam proportionalicer rectan-
gulum sphaera actiuiraris, in his
nulla ditticultas cse ridetur.
DROP. CXXZVI.
Si detur annulus lucidus. tan
cumdem luminis non diffundii a
parte cana, quancum a connexa
licet diameter circuli non sit mi-
nor radio sphaerae actinicaris: Sit.
enim annutus cenrio A, cuius ca
uicatis orbis sIC C A C P; CON- Fis 27.
UCXILALIS VCTO TILDR; AEFa-
dius sptarae actiuicatis, ab orbe
connexo diftula, DE, acque adeo.
tora (phaera, seu Eparimm diffi
Sionis lic corona, cuius ciroulus.
CaunS GIE FIL D R; ConexUS.
reco LR. F. S; videtur quod can-
EHIBdEBdd
PR C 16
CXZR1.