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# Title: [Lectiones XVIII, Cantabrigiae in Scholis publicis habitae] Lectiones XVIII, Cantabrigiæ in Scholis publicis habitæ (shelfmarks Leibn. Marg. 0; ZEN Leibn. Marg. 0)
# Folio 36, page id 797435492:0064
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F18 46.
E E C F. IV
versam PatIONeM RSG. RS9-Z B9 + SNNG::B Ag. BZ9. hoc
estRSg. RNg -ZBg:: B A g. Z B9. quare permurando erit KS9.
B AG:: RIN4-- Z Bg. Z B9. e compolite RS9- 1 BA9.
E A 9:: RNTg ZB9. hoc est ANg. BAG:: RN9. ZB9. qua-
re rrsus permitando est ANg. R N g:: BAg. ZB9:: R9. Iq.
itaque AN. RNI:: R. L. unde patet R N ipsius AN retractum tore:
Z. F. D
ZIX. Erhinc, ut in priore casu, patet quod distantiae (ZL, TR,
R L) concursuum xquantur differentiis ipsarum Z B, H MI, SN, TO
ordinatarum act clliplim. Fix quod ZI, ZR ~ IR. RS. Qc dif-
Ferentix porro dictx circa verricem elliplis L. admodum exigux luner
adeo que proxinquiorum ani radiorum retracti circa L dense congre
santur, e velur ab eo procedere videntur.
EX Exhis tandem univertis colligitur quod puncti radiancis A
imaso (respectu scilicet oculi centrum O habentis uspiam in axe AB
consticucum) circa punctum Z conliltet. Sit enim D S diameter pu-
pillae (illa nempe qua in plano P AFO) de per hujus extrematranle-
ant radiorum A MI, A u resracti IM D, Ie Si; Pane paret quod nullius
obliquioris (ceu iplius A N, vel A r) retractus oculum insredi porerit:
quin universi cales aliortum digredientur, adeoque nec illi quicquam
adrisum actinebunt; eique nil omnino conterene efficiendo quaquamm,
nectum decerminando. Ouinimo cum vilus a Polis atticiatur radiis in-
era sparium Z Paxem interlecantibus, adeoque relur ab eo procedenti-
Dus, incra spacium Z I neceltario verlabitur imaso; quia vero ex his
qui circa Z concurrunt oculo rectius incidunt, ideoque praecipua vi
vollent; cum e ii (uri mox octendimus) spissiores linc, e prae care
ris contertim incedant (id quod eriam nonnihil illorum vim adauger)
cum eriam iidem facilius ab oculorursus in idem punctum recolligantur
(id quod posthac aliquatenus ostendemus; e interim ex eo fc rerisimile.
quod res per exisuum foramen spectata, radiis scilicet obliquioribus
exclusis, longe distinctius, apprehenduntur) quoniam, inquam, hac
ita se habent, iis perpensis omnino rationi consentaneum est objectum
videri ceuradios projiciens a puncto Z, hoc est ejus imaxinem inibi con-
sictere Addo, quod ob exilem pupilla lacicudinem, et propter ali-
guartam oculi dictantiam a retrinsente; totum spacium. L. I perquam
argultum erit, ex instur puncti merebitur existimari: quae cuneta
propolirum abunde videntur centirmare.
at do L C lalt