# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/727094130:0040
# Permalink to this reading: https://leibnizlegible.com/page/727094130:0040?run=74
# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 28, page id 727094130:0040
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=40
# Source image: https://digitale-sammlungen.gwlb.de/content/727094130/jpgs/default/00000040.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 46 lines, status machine
# Lines: 46 recognised, mean confidence 0.84
# 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.

20. EIHIHSo
COrO. 2
AL. XIHIHS.
30 H1171S
4. HHS
unetum incidenrix radii R I, a GuoMtam AP axis speculi, d
Radius R M, ex supPO-
lcione Cune parallelx;
erune in eodem planos
_ parabola BAC ex CU-
jus circumvolutione est
genicum speculum BA
MC, eric superticies re-
Aectionis; radius igi-
Tur R M refectetur in
Focum E, quod erac o.
Cendendum.
Dioperice.
Sinc radii RR ∞s .
Pacalleli in unum pun-
etum P. congregandi,
Ceque Lentis vercex in-
cidentixe A, emertionis
O Hadii RReC.
opeplana lencis
superticiei per A
ductae, cui TUnE
normales eadii
RR, incralentem
Paralleli mitcan.
curs e inera len-
cem paralleli, in
E punctum con-
BTCGENEUT, OPCCO-
noidis, vel sphae-
roidis, cujus ver-
Tex O3 Quod eraE
Faciendum.
i
Poromnavo
Exhocetium sequitur, racles patallelos con
at cttbtet tod eubbetaat
 Lo.
Ca  P
tac t SlC Paralleli recta
PFOP