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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 469, page id 779785487:0527
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LrB. III. DE RR EF R ACTTONF, _C.
4. Daco angulo incidentia; cum
Tuo angulo retractionis, dicere an-
gulum retractum, derratatur angu-
dus rerractionis ab angulo comple.
menti anguli incidentia, reliduus
exit angulus refractuS.
5. Vatis angulorefractionis, e
retracto, dicere angulum inciden-
ria, cui COmpeTUINE; addacur rnuS
alteri, e complerum derratiacur
ex quadrance, reliduus etir angu-
lus incidencia.
6. Datis lnubus, dicere ai-
sulos, daris angulis, dicere (ImIIS,
Facilis res cs.
7. Dato incidentia angulo da-
taque mediorum differentia dicere
angulum refractionis, haec Fuie
PrOP. 42.
S. Daca mediorum differencia,
dacoque angulo incidentix, cum
Tuo retracto, data aliorum me.
diorum differentia, dacogue co-
dem, vel diverto angulo inciden-
tiae, detinire angulum refractionis
ipsi competenrem; ex dictis per-
Spicuum est, nec divrriuis AaLCO.
9. Lass dalo Gueddem scou.
la pro quolibet arcu etiam maiore
valeret, detiniri porest axitus
angulus retractus, daro quolibee
retracto; cuilibet angulo inciden.
LI_ CODCTeNTE; SIE V. 9. anguluS
incidencia ABD; complementi
retos IIBR; TCFTaCtIS, EIBI; SC-
que vE KL, ad IMI, ItA BC, ad
aliam; Puta 2d RV, duCATUE BR,
CCFEC HIBR est maximus angulus
retractus, qui derralracuI Cx Qua-
deance FIBC, RBC erir maximus
anoulus refractionis: Llinc A ve-
rum es, quod dicir Carrelius, ra-
tionem linus complemenci; ad (i-
aquam Cubic, id eR; vE 4. 2d Z. SIEVE
4. 2d 3. Ica SInuS EOCIS 10000O.
2d 75000. cerre angulus, cuius
tancus est linus retus, Scilicet 48.
35. est manimus angulus retractus,
quem s detrahas ex 90. habebis
angulumm 41. 25. pro maximo an-
suilo refractionis, quod Caltem pro-
xime vecum est; Sed quia paulo
maior est praedicta ratio, quam
SiC =. eA enim quati 18. id cAt,
ve. 100000, 2d74800. qui eA (inuS
Fectus anguli 48. 25. hic erie ma
ximus angulus retractus, guem (I
decrahas ex 90. reliduus 41. 35.
erie angulus retractionis maximus,
Polita Scilicer praedicta mediorum
ratione.
10. Ouo maior est angulus in-
cidentia; radius refractus accedie
Propius ad perpendiculum; quia
quo hicmaior cst, angulus com-
plementi minor est, ergo minor
sinus rectus illius; ex cum (IC C2-
derrs FariO OMIIUM, CeTTe mInOE
quoque erie linus anguli refracti;
isitur ∞ an g,ulISs.
OUXTeS, CUE menlura aCceTuS
radii refracti, NOM aCCipIaLUL, II
aecu, porius, quam in LInu; Rel-
ponderet aliquis constare ex cerris.
experimentis; ab arcu non cHC aC.
cipiendam, igicur a finu, cum ab.
alccrurro accipienda lic; vis rario-
nem; accipe geminam; prima elt,
quuia incuruatur radius, co quod
ex arcu exterioris ellipleos (eg-
mencum derraharur, quod cerce
proxime ad rectam accedit; secun-
do quia distantiam linea recta ine-
FIEME, nOn Carua; IsItuE cum mi-
nor, vel maior acceltus, dicae
maiorem, vel minorem distanciam,
num anguli refracci, esse selqui excremi Ccilicer puncti radii, haud
vecrium, currs radius ex aere, in dubie rera secestus mentura in se-
I. I. LI. N2.
et