# Leibniz Legible — https://leibnizlegible.com
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# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 24, page id 727094130:0036
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=36
# Source image: https://digitale-sammlungen.gwlb.de/content/727094130/jpgs/default/00000036.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 30 lines, status machine
# Lines: 30 recognised, mean confidence 0.89
# 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.

IO RuIuS.
6HuIuS.
Conois
24.
uperticie retringi, ee in Lelun C, in diaphano Rariore exictentem.
COnCUErerE: SIE enIm LACIUS RM, unus e parallelis incidens
inpunctum M, qui propia elt in eodem cum axe plano: erie
oitur hyperbola NI. I (ex cujus circumductione senita est
actionis Radii RM; Qui retringetur in
punctum E, ex eo quod adius ex puncto F: egrediens, ec incidens
in M retringatur in IL: UE PaceE per Prop. 9. lib. 10. Vicellionis
Corollarium.
Fx hoc Pacis apparee, ladios Parallelos R R es c. COnOreBATI
in unum punctum prove, quo ad sensum; cciam(i L. L non aequi
distet radiis R R es 6. GCherrice; Ouoniam si non sC sensibi-
lis difterenta inter Cacu, nec eric lensibilis differentia incer
iperticies re
quoderae oltendendum.
effectus.
LFoblema
Radios ex unico panctonnius draphani provenientes, ad Parallelismunt
in alio diaphano diver sa densitatis reducere; dats quoque Conoidis,
vel
Spheroidis vertice.
acelema hoc, convertumt l aecedens, cocese iel
Cou uLa  Frop. 9. lib. 20. Vicellionis.
Corollarium.
Ex hoc quoque Paris apparet Lacos, e puncto aliquo prode L
Droveniences, (proprer racien lupetus allacam) lenlioiliter ad
rallelismum Reduci Condue vel spharoide L L. Mo