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# Title: Leibniz-Handschriften zur Optik und Dioptrik LH 37, 2
# Folio 98r, page id 00068531:0195
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=00068531&page=195
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 57 lines, status machine
# Lines: 57 recognised, mean confidence 0.77
# 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.
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# After the first blank line: the recognised lines in reading order, one per line.

+
calculus Refractionum
sit AR, Repringentis superficiet
sectio secundum axem AX.
s
1
sit in axe punctum L rudimm
uminionem emittens radium
uminis LR, qui in R refriogitur
versus punctum AXI5 V.
datis a, L, R, et natura
lineae quaeritur  V.
seu datis AL, AX (unis
catera determinantur
vaeritur Av ExL
etbV demittantur pormplesL
avo in tangeotem Ad qui
l
uom
elat ins
e
hersin
sit ratio medii LY ad medium
respectu refractionis, ut
b
L ad a
V. erit LT ad VD in composita ratione
LR ad LV, et + ad d; ergo sos adsque
similiter se habebit 
erit LT: VD
a
 L5:s
vicissim LR: RV
ea e
20
e
sen
tR: d. . Ergo
 (. L5: t. SV. hoc est partes
viae refractae (eRV) a puncto (L) ad punctunt 1) (hoc est
LR _ ad RV)
LSi BV.)
pratione
 in ratione composita ipsarum
partiu viae recta (LV) et ratione
reciproci mediorum. Et si ponnotir L)
VD
atquale alo rt ad EY aequales seu si punctum
enn
t recpiens Vaeque a superficie plana
retolu
remotu povantur, erit LR: RV: d.
er radi LIC.  in reciproca ratione medioru
nomne insingangulurum incidentiae et reflexionis
sie in ranone midiorum directa, ita sinqus compleme
si duntin reciproca
santuant sivuss