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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 490, page id 779785487:0548
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P H YSICE PRACT. IV.
hi minores, si sphaerae, vel cplindri inera vierum RL; Iccundo refra-
WInOTeS LUNE, VE COnAAE ex CiCO-
metria, ex cgo iam alias demonstra-
ui; acqui live pori maiores (InE, (I-
ueminores, eadem materia, vel
corporis, vel ponderis quamritas,
Leu porrio maner; igirur cadem gra
nicas; igicur ec eadem dentras;
igituE maior, vel minor densicas à
Poris non cst; led li pori ansustio-
ies lune, maior est retractio, ex
Peaemissa hypoch. igieur ciera mu-
cationem densiraris est refractio,
quod dici non pocest.
12. Tertia rario inde pecirui,
quod in hac hypoch. eadem esle de
Deac proporcio retractionum, et
densicatum; cum enim maior den-
licas, iuxca hanc hypoth. ex angu-
cioribus poris peratur, e cum Lub-
rilicas radii angustiis pori congruat,
denique cums vis motus crelcat, in
ea proportione, in qua imminuitur
mobile, igitur in cademt propOr-
tione. cadius incuruatus, vel ietra-
ctionis efectus sequieur; igieuE RI
sic dupla densicas, erir quoque du-
plo angultior porus; a duplo (ub.
Eilior cadius; X dupla vis efectus;
duplus demum retraccionis effe-
ctus; sine in angulo, vel in arcu,
Cive in Ciru TumREuE; quod CCrEE
omnibus experimencis repugnat,
ve constar; omicto alia aroumen.
ta, peaecer alia in lib. de lumine
Fuse expolica, cum haec ad pea-
mictam lypochelim descruendam,
Cufficere videantur; Ve aurem tO-
tam rem retractionis ob oculos
Donam obiter, certum est,
T. Radios secundo Fetractos, ire
deinde, l verimque producaneur,
Parallelos luis angulis incidenria;
v. 9. H9. 33. Sc AR cadius incidens
ex aere im vicrum; priim D LeFLa GCHS
EtuS LHI, ex ViErO emerGCHS, PrO-
ducatur in HIB; eric parallelus ARI,
QIIA LR, SI CMMCTOALE CK VIETO, Le-
Fringicur in RA;igitur retractus in
LII, cum angulus refractionis LILY
Sic aequalis angulo AR co, eA Paral-
lelus radio incidentix AR.
2. Omnes radii secundo retra-
eti terminantur verimque producti
ad IdCI CEHEPUIM, INFEACCHEFHI FA-
diorum incideneia; (IE CHII CCN
trum radiorum incidenciae A, lIE F2-
dius secundo refractus L FI, produ-
ctus in B, sic alius incidentia BP,
ducatur BF, Pacallelus AP; d rbi se-
CaF DL, ducatur PH, hic est primo
reFraCtuS, e PIE Secundo reFiaCtUS;
nempe oculus excipiens secundo
retractos ridet eos ab codem pun-
cto, seu cenero prodire.
3. Ilinc habico vno angulo Le-
Fractionis, habentur reliqui; nem-
Dehrabico uno anouloretractionis,
DUIEA LRK, habetur LB paraIICl2
AR; igitur e punctum B; igieur da-
to quolibet alio angulo inciden-
Ei, pITa APO, ductaque DF pacal-
lela APO, haberur punctum _;: gi-
eur _ radius refractus PH: igicur e
angulus refractionis HPr; Pari io-
do quilibet alius haberi pocest.
4. Flinc ve cangens vuius anguli
incidentia ad cansencem angulire-
Fracti, ica cangens alcerius anguliin-
cidencia ad cangenrem lui anouli
retracti; v. 8. lc angulus C AR, vel
MRK, a cangenS ilLIHS MK, SIC an -
GuIUS ECFFaCtUS MRL, d illius ean
gens ML; licalius angulus inciden-
Eia C AD, vel ZP7, _ an g1lUS FC-
Fractus LPF, cangens huius TNI il-
lius vero TL, cerre ve MIK ad MIL
it2 Fγ ad THV; naI VE MK ad NIL,
ita RML ad VBt ; ita AC ad BC;
MAr