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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 18, page id 1677894601:0190
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=190
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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 0.89
# 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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1
18
in the midst oF all the Colours is che contine OF BrCCH
and blue. And hence I Peem to collect that the thick-
nesses oF the Air betreen the Glases there, Wrhere the
Ring is successively made by the limits of the sire prin-
cipal Colours (red, vellorr, sreen, blue, violet) in order
(that is, by the extreme red, by the limit ot red and
velloir in the midale ot the oranse, by the limit ot
vellorr and sreen, by the limit of sreen and blue, by
the limit of blue and violet in the midale oF the in-
dico, and by the extreme violet) are to one auother
very nearly as the six lensths ot a Chord irhich Cound
the notes in a Sixth Major, sol, la mi, fa sol, la. BUF
it aorees Lomethins becter rith the Oblerration to CaY,
that the chicknesses oF the Rir betmeen the CTlaRes there,
Wrtere the Rings are successirely imade by the limies oF
theseren Colours, red, oranse, rello, sreen, bluc, in-
diso, violet in order, are to one another as the CuDe-
r0ots oF the Squares oF the cioht lensths ot a Chord,
irhich Cound the notes in an eistth, sol, la fu- sol, la-
mi fa sol; that 15, a5 the C uDC-TOOtS OF the SquareS
2 2 3
0
aC The NumberS, Ly 9 63 a3 33 33 103 2
OB S. XV.
Thele Rings ere not oF varions Colours like thole
made in the open AIT, but appeared aIL over oF that
prismatique Colour only rith ertrich they evere illu
minated. And by projectins the prismatique Colours
immediately upon theClases, I Found that the LighE
ertrich fell on the dark Spaces ertrich ivere becreen
the coloured Rings, as transmitted chrough the
Glasles rithout any rariation ot COlOUT. FOr On a
Wvhite