# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/82327652X:0080
# Permalink to this reading: https://leibnizlegible.com/page/82327652X:0080?run=74
# Title: Où il répond à plusieurs difficultez qui luy ont esté proposées sur la Dioptrique, la Geometrie, & sur plusieurs autres sujets (shelfmark Leibn. Marg. 43:3)
# Folio 52, page id 82327652X:0080
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=82327652X&page=80
# Source image: https://digitale-sammlungen.gwlb.de/content/82327652X/jpgs/default/00000080.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 38 lines, status machine
# Lines: 38 recognised, mean confidence 0.91
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
# Licence: CC BY 4.0, Leibniz Legible. Machine output: do not ingest it as verified text; keep this provenance with the text.
# Wording rule: say "the machine reads it as …", never "Leibniz wrote".
# After the first blank line: the recognised lines in reading order, one per line.

i
ATTRFS
veilitari prospiciendi, antam prabeane, contido eas restrae
Reueremcix gratas Fore. Nec idcirco vilam bIc pratabor
excularionem, quod torre ionorus rosincerpellem, sed di-
cam eancum me monirum fuisse, qualdam Theles in veltro
Pariliensi Collegio publice nuper fuisse detenlas, quas qui-
dem incegras non vidi, sed ex iislxc excerpra ad me milla
TunF.
Expasina 1r. Ve ad explicandam lueis e colorum actio-
nem in oculos, non sufticie morio fictx cuiusdam maceria
Cubrilis per aërem Fulx, ica neque moeusaeris saris explica-
re poceltrim plane miram ex actionem lonorum in aurem.
Ec ex parina 15. lucis _ colorum actionem in oculos ex.
Plicare permorum macerix cuiusdam (ubcilis, Fula peraeris
ec cransparentium corporum poros, quam lucida corpora
moneane, e qua cansane oculosmodis variis acque omni-
no alicer quam per speciesincentionales, estcicatricem cu-
rare nouo vulnere, ee gracis implicare lese iildem et insu-
pernouis difficulcaribus; has afferre, e inanicarem subcilis
illiusmarerix demonstrare.
Vuiuertale hoc refexionum principium, angulus refle-
xionis aequalis est ansulo incidentiae, aliunde videtur demon-
strandum auc explicandum, quam à distincta vireure, ee de-
cerminatione, eaque semina, circa mocumpila, exempli
gratia, aliisque id genus; ex quibus, nisi aliud afferaeur.
contrarium manifeste concluditur. Idem censendum de
refractionum principiis, quae qui veller iildem ex capicibus
demonstrare, is (u2 delusus AnaIVSI, oppolicum conticerer.
Ouoniam aurem opiniones qua ibiretutaneur, neminem,
quod scia, Praeter me auctorem BaBCDE, SUMMIOPeTeSA-
nilus Cum, hinc mihi datam esse occasionem Aasicandi ve
me errorum meorum monere disremini; et quidens Occa-
sionem cam iustam, ve pro vestra prudentia e charicare, vix
id mihi reculare polhtis. Nam certe neque nomen eius à quo
Pheles illae factae lunc, ad me scripeum fuit, neque eriam
nomen sciencix quam docer; et ( rel Phylicam esse vel ma-
chesim Facile ex argumenro coniiciam. Cumque noverim