# Leibniz Legible — https://leibnizlegible.com
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# Permalink to this reading: https://leibnizlegible.com/page/727094130:0121?run=74
# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 109, page id 727094130:0121
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=121
# Source image: https://digitale-sammlungen.gwlb.de/content/727094130/jpgs/default/00000121.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 33 lines, status machine
# Lines: 33 recognised, mean confidence 0.86
# 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.

hoc clea uo cto Det Frop53 Bujus. St auteit La
o nonit lalls blata, e lucica; cteur, In Guacunqueeatione
data, per Prop: 5 4 hujus: quo eriam oblcurioe Fuerit lus  eu
HC Obtate   dicetut td e esu HtaBIS aut-
Pliticacut taCaletto Paltorto)CoCtalltot IA OBet Vat1O. LDaCHL
laa  adcra esctota aC Cnnntlaa  LL CCII
(C5.
reema.
Distantiam. anoru pactum, sibi invicem propinquorum, e ances
cum circuli maximi, per eorum contra ducti, cum verricali quolibet,
per centrum unius siderum ducto, obserrare.
icolcopii axiss in plano illius verricalis, cujus angulus
cum CicuoaMO per centra liderum ducto quaeritur; ita
uc surlum, e deortum, libere moveri poreric; Pemper renens aX-
em, quam exactissime, in plano verricalis. Sicque hiujus icolcopii
planum imaginis A B C D, in quo nocerur recta HII, communis
incerlectio, plani imooinis, ex circuli verricalis praedicti: in quam
incidae, axis lcolcopii productus, in puncto L. Deinde diligencis-
Em: accendatur, donec hdus cujus cenerum in circulo nverricali
nocaci debeae, circulum verticalem actingat: e moreacur lcol-
copium Cursum ex deorsum, donec cernacur cenerum imaginis il-
lius Cideris, in punctoL. Ec eodeminstance, nocetur in plano
imaginis, cenerum alcerius lideris, in puncto A. Dicaigitur ima-
oine L. N, ope quoccunque lencium, vel speculorum, projecta; _
datis, lenrium, vel speculorum, e imiginum, a lc invicem diltan-
ciis; inveniacur angulus vicorius visibilis, ex vercice suae inciden-
cix; qui erie distantia siderum, quorum imagines sunc L, N. Dein-
de menturerur quam exactissime angulus H L N, qui eric anoulus
circuli vercicalis, (in quo existie axis Icofcopii) cum circulo maxi-
mo, in quo exictune siderum cenrra: EIt enim recta EI L, commu-
nis incerlectio verricalis cum plano imasinis, e recta L. H. Coin-
munis incerlectio circuli manimi. per cerera siderum ducti, cum
PlaBO