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# Title: Optica Promota, Seu Abdita radiorum reflexorum & refractorum Mysteria, Geometrice Enucleata (shelfmark Leibn. Marg. 94)
# Folio 8, page id 727094130:0020
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=727094130&page=20
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 35 lines, status machine
# Lines: 35 recognised, mean confidence 0.90
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
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# After the first blank line: the recognised lines in reading order, one per line.

phano densissimo in rarum extrema concipiamus; necessario le
quicur radios ex uno diaphano, in aliud ejuidem denlicatis incicen-
ces, esse medium incer praedicta dus excrema; in hoc autem catu
nulla sicrefractio; In parabola ergo (quae media elt incer circu-
tum _ lineam rectim) omnes lineae axi parallelae, ec in eouem
cum parabola plino, in iplam incidences, debene per refractionem
concuirere in focun, a punetis incidentix maxii e remOTUI: dE
focus ilte a vercice parabolae infiniie dictat; omnes igicur radii in
parabolam incidences, ec ad praedictum focum imoginarium ducti,
sunc axi paralleli: Ci veio ec anre, e poltincidentiam, sine axi pa-
ralleli, a refractione omnino luneliberi, quod elt propolicum. Con-
eludimus isicur analoeice, poomni diaphanorum diverlieace, inve
niri polle superticiem retractionis (quae Se sectio conica) in qua li-
rex parallelae in plino unius diaphasi, in altero retractae COrCU-
FaME in punctum: Guo auten densius Fuerie diaphanum in quo t. -
dii TurF Paralleli, _ quo rarius diophanum in quO CONCUFTUHE; CO
propini accedie superticies retractionis ad hyperbolarum obcusil-
Eiam, id estlineam rectam: ex C Contra; quo rarius Fuerie diapta-
num, in quoradii sunc paralleli, et quo densius Fueric diaphanum,
in qu concurrune, ed proxius accedie superficies retractionis ad
ellipite obcusis d est circulum. Verun relictis hilce ani-
Iosta tvgis, ad expementia scienciarum originis cerriora restimo-
Ll
nla aecedaS.
Reactiones cujus cunqi diaphani ex aere invenire.
Teplonumm aliguod A B C D Aabilicum, et horiznei paral.
Blelum, vel eo circicer; Ecg; punctum aliquod ArimiNuT e Aa-
bilicum in sublimi postum F, Sc per punctum P concipiatur duci
perxendicularis ad horizontem V FG, scque angulus incidenciae
in diiphano (cujus anguli retractio requiritur) C+P L, qui faci e
mensuratur altrolobio, vel quadranie: ex in puncto L, AgICUE COr-
Fusculum resplenens, _ candem implertur rorum illud spsium
incer planum AB CD, _ runetum F, diaphano opcir e poliio,
cujus superticies ad F. punetum, horizonei sic exquitiié porallelo,
de