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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 16, page id 1677894601:0188
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=188
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 31 lines, status machine
# Lines: 31 recognised, mean confidence 0.92
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OBS. ZTII.
Appointins au assistant to more the Prism t0 and
Fro about IES AXIS, that aI the Colours might succes-
Sivelr FaII On Chat Part OF the Paper Wtrich I CaW bY
rellexion trom that part ot the Gilalles, irhere the Cir-
cles appeared, (0 that all the Colours might be succel-
sivelr reffected trom the Circles to my Lye Whilst Iheld
it immorable, I. Found the Circles wrhich the red Lioht
made to be maniteslr bioger than those which vere
made by the blue and violet. And it was verr plea-
Tant to sec them gradually sirell or contract accordins
25 the Colour of the Lighe as changed. The inter-
val oF the Glasses at any of the Rings Wrhen they vere
nade by the utmost red Lioht, was to their interral at
the Pame Ring wrhen made bythe utmost violet, greater
than 25 3 +0 2, and lels than a5 13 +08, by the most ot my
Oblerrations it Wras 25 14 t09. And this proportion
Ccemed reey neariy the lame in all obliquities ot my
tire; untels wrhen tro Prilmsiere made usc ot instead
ot the Object-GitaRes. FOr Then AE a certain orCaL
obliguier ot my Fire, the Rings made by the several
Colours seemed equal, and at a greater obliquity. thole
made by the violet rould De grcater than the same
Rings made by the red. Theretraction oF the Prism
in ehis case cautins the most retrangible rays +0 FaII
more obliguely on that plate of the Aix than the least
retransible ones. Thus the Fxperiment (uccceded in
the coloured Light, rhich ras Cufsiciently Atrons and
copious to make the Rings sensible. And chence it
may be sathered, that il the most retransible and least
retran-