# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0305
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0305?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 129, page id 1677894601:0305
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=305
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000305.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 31 lines, status machine
# Lines: 31 recognised, mean confidence 0.89
# 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.

l12G
trom the Asymptote DF. vou mas find as mans points
OFthese Hyperbolas as rou pleale, and thereby kno
chat these curre lines are (Iy perbolas ditterins little From
the conical Hyperbola. And by meaturins the lines
1, C. k, C.L, rou may find other points ot thele
CUTVeS.
fior instance, When the Rnires vere dictant From the
tTole in theWindon ten Feet, and the Paper From the
Anires 9 Fcet, and the Ansle contained by the edges ot
the Enires to irhich the Angle AC. B is equal, Was sub.
tendes br. a chord wrhich Was to the Radius a5 I t0 32
aud the distance of the line er From the ACyimptote DF
vas hralt an luch: l incatured che LIneS PS, GC, EV,
and Found them o35, 065, 098 lnches respectivels,
and by addins to their halts the linc; mn (Which here
Wras the 128th part oF an Inch, or 00078 Inches) the
lUmIS HP, nG, AF, Were 01828, 03328,04978 In-
ches. I mealured also the distances ot the brightest
Paxts oFthe Fringes irhich run betireen p9 aud st, 9L
and EV, and next beyond r and v, and found chem 05,
08, and l17InCheS.
dB5.
Lhe Sun Cimins into my darkenea RoO CATOlBA a
lnall round HIole made in a plate ot L ead rith a llender
ein as abore; L placed at the Hole a Prilm to retraet
che Listt, and Form on the oppolite WaII theSpectrum
oF Colours, described in the third Lxperiment of the
Axst BOOk. And then I Found thatthe Madors oF aII
Bodies held in the coloured Lighe betveen the Prism
and che Nall, Were bordered wich (rinses Of che Colour