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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 19, page id 1677894601:0191
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=191
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 27 lines, status machine
# Lines: 27 recognised, mean confidence 0.89
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P
191
irhite Paper placed behind, it rould paint Rings ot
chelame Colour rith those irhrich iere reflected, and
oF the bigness ot their immediate Spaces. And From
chence the orisin oF these Rinss is manifest; namet),
Lhat the Air betreen the Glabes, accordins to its V2-
rious thickness, is dispoled in lome places to retlectu
and in others to trantmit the Lishe ot any onc CO-
lour (a5 you may sec represented in the Fourth Figure) Fis. 4.
and in the Came place to retect that oF one COlOUF
arhere it transmits that ot another.
O BS. XVI.
The Squares oF the Diameters oF thele Rines made
by ans prismatique Colour vere in arithmetical PrO-
srection a5 in the titth Obserration. And the Diameter
oF the Sixth Circle, wrhen made by the citrine yellon,
and viemed almost perpendicularir, Wras about  PaFIS
ot an Tnch, or a litele less, agrecable to the sixth Ob.
Terration.
The precedent Obserrations ivere made with a raret
thin medium, terminated by a denser, such a5 was Air
Or Water compressed betreen tiro Clases. In those
thac tollor are set donn the appearances ot a denser
medium thin d rithin a rarer, such a5 are plates ot
Muscory slass, Bubbles ot Nater, and some ottier Thin
substances terminated on all. sides With AII.