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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 90, page id 1677894601:0266
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=266
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000266.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 34 lines, status machine
# Lines: 34 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.

L90
outwards, purple, blue, ercen, sellon, lisht red, a red
mixed rrich purple.
Then immediately folloed the Colours of the chird
Tris, irtich arere in order outrrards a green inclimIns
to purple, a 800d ereen, and a red more brishE chaM
that ot the Former Iris.
Lhe tourth and fitth Tris secmed ot a bluistr green
Within, and red without, but (o tamtly that it ras dit
ficult to discern the C Olouis.
OBS. TTI.
Meaturins the Diameters oF these Rings upOn thC
Charc as accurately a5 l could, I tound them al(o In
the lame proportion to one anocher ith the RInSS
made by Lasht transmitted chroush the tuo Object-
ClaBes. For the Diameters of the tour trst ot the
brishe Rinss mealured betireen the brixhtest parts ot
cheir orbits, at thedittance ot six Feet trom che specu-
lum Were 11
163
N 2123 38 Luches, Whole squares are In
arichmetical prosrestion ot the numbers 1, 2, 3, 4. IE
che wtite circular Spot in the midale be reckoned
amonest the RinsS, and its central Lastt, irhere it
Teems to be most luminous, be put equipollent to an
intiutely little Rins; the squares olthe Diameters ofthe
Rings wilt be in the progrestion O, 1, 2, 3, 4, dc. I
mealured also the Diameters ot the dark Circles be-
circen chele luminous ones, and tound theis iquares
in the progrection oE the numbers;, 15, 23, 3:, c.
the Diameters oF the trst Pour at the distance ot six Fcet
trom the Speculum, beinS 16, 216, 23, 370 Inches. IE
che distance ot the Chart trom the Speculum iras in-
crealed