# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/727094130:0120
# Permalink to this reading: https://leibnizlegible.com/page/727094130:0120?run=74
# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 108, page id 727094130:0120
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=120
# Source image: https://digitale-sammlungen.gwlb.de/content/727094130/jpgs/default/00000120.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 37 lines, status machine
# Lines: 37 recognised, mean confidence 0.87
# 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.

EUM EIN, TE.N, e lacerO IE, dabicur latus OI. Deinde in eri
angulo sphaerico MIO, rectangulo dl 13
 B IM laceribus.
non igno-
rabicur la-
EUS O. M,
distaneia
circulimi-
nOris, a (uo
DOlO;d an-
BulusOMI.
Qui ablacus
ab angulo
FMTrelin-
QuiE aNgu-
lum FMO
dacum. In
criangulo
AGIEUT L M
O, Cdatis,
IoceriDuSF M, MO, CMSLABGHIO INFETCEPIO FMO; dabituE lacUS
FO, compremeu actccns poli circuli minoris, seu dictancia
ejus a polo ecliprica; e angulus MFO, difterencia illius longicu-
dinis a longicudine Phxnomeni M. Duxe invenienda erant.
2. Problema.
Diametrum adat solis, lunae vel stella onjustibet, ex actissime
observare.
Rojiciatur illius imago, ab una lence, vel speculo, in aliam, uE
em eradat in mastcudinem laris sensibilem; e in pla-
no albo, radios sideris Foretcer revibrance, reprasenterur ejus ima-
tin Prop. 52 hujus, _ ejus scholiis, docuimus. Deinde men-
usccar quam exactissime hmaginis diamerer; qua data, ope quor-
cunede speculorum, rectencium, projecta; darisque, speculorum,
vellehrium, ec imaginuul, a le invicem diltantiis; inventatur an
oulusviforius, visibilis (nempe sideris) ex verrice sux incidenrix,
hoC
L car