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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 117, page id 1677894601:0293
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=293
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 26 lines, status machine
# Lines: 26 recognised, mean confidence 0.88
# 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.

177
lours wrtere those Planes meet rith the Diamond cut,
and by this means there wriil Pometimes appear FOuT OK
tire Fringes oF COlours. Let AB, C. D reprelenc the Fis. 2.
Parallel planes oF a Lookins-sla(s, and BD the planc
ot the Diamond cut, makcins at B a very obtuse Angle
withthe plane AB. And let aII the Lighe Detireen che
TayS F N I and FBMI pals directly chroush the parallet
Planes oF the CEla(S, and FaII upon the Paper betireen l
and M, and aII the Lishe betreen the raYS CO and
HID De refracted by the oblique plane of the Diamond
cut B D, and FaII upon the Paper betreen I and L; and
the Lixhe irhich passes directlr chrouch the parallet
planes ofthe Cla(S, and FaIIS upon the Paper Betreen
land MI, Wil De bordered rith three or more fringes
AE NI.
OBS. TTI.
When the FPair as trvelve Feet distant Fromthe
tTole, and its Bhado Feil obliquelr upon a Rat vrhice
Ccale, ot Inches and parts ot an Inch placed halE a FOOL
berond it, and also irhen the Chadon Feil perpendicu-
laxiy uxon thesame scale placed nine Feet berond it;
I mealured the breadth of the Madon and tringes a5
accurately a5 lcould, and tound them in parts oF an
lnch a5 tollors.
dud