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# Title: Leibniz-Handschriften zur Optik und Dioptrik LH 37, 2
# Folio 90v, page id 00068531:0180
# Scan: One image of two folio pages side by side, registered by the library under both labels (also fol. 85r); this page is its left half.
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=00068531&page=180
# Source image: https://digitale-sammlungen.gwlb.de/content/00068531/jpgs/default/00000180.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 20 lines, status machine
# Lines: 20 recognised, mean confidence 0.95
# 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.

sijem hoc planuu inpraxi consideretur at focus, mainforta ert
ratio quam hi Circuli adse mutuo habent, nempo cum ND
est l. quod tum KH minor esse debeat quam 2.
Debet itaque figura vvitri concipi eadem quam describeret
fig.2 HaBD votata circa axem DH. Et notandum ert, non
necesse esse, et postquam unasuporficies vitri polita ert, ox:
gr: convera RdB, ad alterampoliendam, centrum kmancat
inaxo D. NK, prout accurate attendendum esset, s. ABB
esset Ellipsis, aut hyporbola, ut planam hanc secaus esset
ad angul rectos ad axem: sed tantum videndum er, ut
maxima viti erassities, mensurata sccundumpopendicularem
in connenam et concauam suporficiem incidentem, aqualis
sit DH..
Magnitudo porro segmentorum omnium circulorum
quatenus parallelos radios in vnum punctum mechanieum
congregant, facile autpor suprapositum calculum, aut
per ipsam experientiam incenius potert.
quoniam segmenta hare croculorum. In tanto cony
veniunt cum Ellipsi, qua etiam radios axi paralelos
ad vnampundum rofractione detorquet, nullo modo-