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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 429, page id 779785487:0487
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S.di
L 1B. II. DE ALYE R A TIONF.
plano obliquo, quam in directo, men illius, esse ad lumen porrio-
v. 5. in ellipsiBE, quam in circu-
I0 CF; est enim elliplis praetata
minOr CircilO FC, Ve pater: hinc
lumen incensius est in eo plani el.
liprici puncto, quod propius ad
centrum A accedic: Ilinc criam di-
ci porest, quenain (ic cario lumi.
num, in divertis seomeneis dia-
Ietri E B, v. 8. in FF, PB; PUINE
enim lumina in pradictis (egimen-
tis, ve elliples, sub diaeeris F F,
FB, permutando; Ccilicet in conis,
Cub angulis aequalibuS FAF, FAB;
quod cerre eodem modo Biob2-
eur, quo supra, quomodo verdin
porrionibus ellip(cos, sine luminas
dicemus paulo polt.
PROP. C
Desiniri porest ratio luminis, quod
inest plano parabolico: SiC COnUS
luminis ACO, Ec centrum balis
E, ducatur axis parabolae BF; (IF-
que parabola BFD: dico lumen in
plano patabolico BFD, esse ad lu-
imen plani Pemicirculi FCD, VE hOC
Planum, est ad illud; hoc est lu-
mina lune ve ipla plana permuran-
do, ve lairr cories diximIS; eM-
pe nullus radius incidie plano
FCD, qui non ducacur per pla-
num BFD; igirur cadem cst POr-
rio luminis in vno, quae in alio;
igitur lumina Punc ve plana, per-
mutando; lIE QUIECI V. g. FD, 8.
FC, FB, aeguales; hoc DOTIEO Pa-
rabolicum planum eric 24. Femicie-
CuluS Verd 25. =. circicei.
PROP. CT.
inest porcioni plani elliprici,  hy-
ig. 8. Perobaci: Sic conus luminis ACD;
nis circuli FCF, re hoc planum
est ad illud; Cunc enim lumina Cub
eodem angulo comprehenta, ve
Plana, quibus incidune, permutan-
do; lic eriam conus luminis ACF;
siE hyberbola BCD; SIc ctiam POI-
tio circuli GCD; lumina PunE ve
Plana, permutando; quod cerre co-
dem modo probacur, quo Lupra.
PROP. CTI.
Tsinc vera raiio ducenda est. pro-
peer quam planum obliquum minus
illuminatur: v. 8. Eine duo plana
Eig. 9.
aequalia BF, BEL; ita BFI sic obli- Fig. 20.
quius; cerre ve vides longe pluis lu-
iminis incidie plario BF, quam BFI3
quia heic incidie lumen suB anou-
Io BAFE, huic vero (ub anoulom 2-
iore, Scilicet (ub BAF, in hoc nulla
est disticulcas.
PROP, CTII.
In ea superficie sistit sphara in qua
produerur illud lumen, quo imper-
fectius produci non porest: Alioquir
nulla penicis eset ratio, cuF vIETa
Ephaera non producerctur: immo
Facilior modus exeogirari non po.
rest, quo dittulio qualicacum cer-
MLMCEUI.
PROP. CTV.
Si accipiatur linea lacidi, quae lon-
sior est, loneins acir quam quae bre-
nior: Racio clarislima cR; quia 1I a -
ior caula maiorem effectum produ-
cir, per ax commune; igitur plus lu-
cis plus luminis; sed plus luminis in
maiore radio diffundicue, VE PaECE
ex dictis; igitur longior lucidi linea
lonsius asir; cum lineam audis,
plylicam cogica, nom nulla mache-
eorrio ellipseos BEFC; dico lu marica dari porest.
AEIL
A
Definiri potest racio luminis, quod
18. 7
PRDF