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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 100, page id 1677894601:0120
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=120
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 33 lines, status machine
# Lines: 33 recognised, mean confidence 0.92
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(10O
Fcet distant from the Prilm ABC, and (0 figured that
it may cause thecoloured Fishe irhich diveroeth From
ehe Prilm to converse and incet again at iES FOCUS C,
about siX Or eient feet distant From the Lens, and
chere to Call perpendicularty upon a irhrite Paper DF.
And iCyou more this Paper to and Fro, rou will per-
ceire that near the Lens, as at de, the wrtroie Colar limage
(suppose at pF) will appear uxon it intenstr coloured
alter the manner abore explained, and thatby recedin
From the Lens those Colours will perpetuallr come 10.
vards one another, and by mixine more and more di-
lute one another continuallr, until at leneth che l’aper
come to the Focus Ci, irhere by a pertect mixture they
Will irhollr ranistr and be converted into wrhitenels, che
Wrhole Lisht appearins nou uxon the P’aper likce a lictle
arhite Circle. And alterards by recedine Further From
the Lens, the rars Wrhich betore converoed will non
cross one anothier in the Focus C, and diverse From
thence, and therebr make the COlours Io appeai acaI,
but vet in a contrary order; suppose at oc, Wrhere the
red t is nou abore erhrich betore ras belou, and the
riolet p is belo erhich betore Wras above.
Let uS nOW ROp the Paper at thC FOcuS C artrere
the Lighe appears totallr wrhite and circular, and let us
consider its irhiteness. I Cay, that this is compoled ot
the conrersins Colours. For iE any ot thole Colours
De intercepted at the Lens, the mhitenels rill cease and
derenerate into that Colour irhich ariseth from the
compolition ot the other Colours irhrich are not inter-
cepted. And then it the intercepted Colours be let
pals and Fall uxon that compound Colour, ther mix
with it, and by their mixture rettore the irhitenels.