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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 45, page id 797435492:0077
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L F. CL
spatium NR. perrinentes intra Z V eidem occurrere; quineriam nussi
us cirra punctum M, vel ultra R incidentis retractum (seu nullum
cirra Z, vel ultea V cum ipso R N concurrentem) oculum ingredi
voTe. quare laltem imaso consistet intra terminos V X; Siquidem
aliunee qui videntur emanare Radii nihil quicquam ad vilionem con-
ferent, aut ad eam ullatenus perrinebune. exrerum quoniam ab V Z
procedentium (apparenter, inquam, procedentium) recistimi, vel
axi propriores. velur ab ipso. Z. procedere videntur (seu à loco qui
circa ipsum) ipsique proinde ralidius asticium oculum, e ab eo
facilius adunari, recolligique pollune, cum ec ii prx cateris conter-
uim irruane (illi faltem qui act partes in R2,) quia denique proPter
angultiam pupillae sparium V X haud ita magnum existit; cum, in-
guam, haec ica se habeane, omnino rationi consentaneum est, dictam
imaginem circa punctum Z verlari; nec alias arbitror excogicari posse
verilimiles caulas, qua sirum ejus determinent. Ilhazenus quidem,
e polt cum pleraque cohiors Opticorum iplam ad punctum R, ubi
principalis retractus perendicularem AB decustac, constituit; re- FI8. 62.
rum haud ullam rei nacura causam sugserit, cur inibi Patuatur. unicus
enim (nili salrem pupilla perpendicularem ipsam AB comprehendat,
oculusque valde sic ei propinguus) per illud punctum means radius,
afticiendo risui minime suffecturus, ingredietur oculum; cademque
punctorum intra R Z ipsi R adjacentium est ratio; nullus siquidem
et permeans relractus oculum artingit; nil itaque subest caulae cur
punctum A. cirea K axpareat. quin adhuc a vero magis aberrat, =qui D. Hobbins
Faciens N FIxqualem ipsi N A puncto H aftigir imaginem (huc, opi
nior, impulsus quia caliter in reflectione se rem habere perspexie:
cui similis causa ni fallor Eaclidem. Alhazenum Srevinum (quan-
quam iplos in divertum cuntes.) horumque sequaces, in Catoptricis,
in. CriOrem eGIE, PPOUE ulu nOn FATO VenIE. analosias houd bene
funducas, indistincte que perceptas mortalibus imponere; sed urcunque
quod dixi masis ilta sencentia abtorret a rarione.) nullus enim isi
primo calu retractorum concurtus tic intra ansulum ABF; nulluS exIra
illum in secundo; proindeque Forrius hanc quae objecimus, quam
priorem Alhazeni percollune sententiam. addo quod Cirul utraque,
sed praelertim haec, mulriplici retragatur experientiae, multiplicique
raciocinio; parirer enim le res habere debuit in Cacoptricis, ut ec
in Diopericis circularibus; id. quod manifeste, lonseque secus tar
ab exverientia, quam a ratione compertum est. quin hanc abunde
subrertir ac pestum dac quod suora propoluimus experimenam, nemi
minon obrium; qued nempepuretum A, oculo in iplo perpendieu.
Lari.