# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/82327652X:0506
# Permalink to this reading: https://leibnizlegible.com/page/82327652X:0506?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 478, page id 82327652X:0506
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=82327652X&page=506
# Source image: https://digitale-sammlungen.gwlb.de/content/82327652X/jpgs/default/00000506.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 76 lines, status machine
# Lines: 76 recognised, mean confidence 0.78
# 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.

tu
T R F. S
imaginandum repralencane) et pano sectionis B F C Pa
rallela, in conica
superhcie verim-
queterminara, est
diameter alceri
Conjusat2 ve su-
Pra. Acque bXC
ommia carr. Clara
sune, renulla de-
monstracione ese.
re rideaneur.
Tertius Casus.
Daca parabola
B CF R CuiuS ver-
TCX (E, _ ParSAXIS
CY est xqualis
media parci lace-
risrecti; dacoque
etiam lune linex
A C Quam VOCO.
a, E F perpendi-
cularis ab F in
axCm, quam voco
b, F Y quam voco
c, e lacusrectum
quod rocor; ex
quibus quaro
punctum B in quo
Pacabola Tanga
tur ab ellipsi in
cuiuscentrum ca.
perpendacularem aX C+ L, quaA VOCO N, acque per Anau
puncto a exera planum sectionis, ex quo perpendicularis
A L Cacleeacta arem, in E punctum plani sectionis, dacx
dic perpenatcutaris a puncto a; side quaro lineam B N
siminuer
doetacile
dn (1 a 8
etemec
media p
verrice
Melo B
diriore
per
in Punc
dc par
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Pendici
liei Tupe
loi coni
lollicui
acto.
18
B qu
lux
deta
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benri
deem
don
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lis Iuac
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Aatio c
aem
re
cin
lar
ip
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dir
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Ad CDHIC