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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 119, page id 1677894601:0295
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=295
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 32 lines, status machine
# Lines: 32 recognised, mean confidence 0.92
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ET19
Phele meatures Y took by lettine the Chactor oF thC
FTair at halE a Foot distance FaII lo obliquelz on the
leale as to appear tvelre times broader than rrhen it
tell perpendicularir on it at the lame distance, and set-
cins dorn in this Table the tweltch part ot the mea-
Tures Ithentook.
OBS. TV
When the Badorr and Fringesrrere cast obliguely
upon a (mooth rrhice Body, and that Body iras remo-
ved further and surther From the Hlair, the Arst Frinse
Fegan to appear and look briehter than the rest ot the
Liont at the distance ot lels than a quarter oF an Inch
from the Iair, and the dark line or Madour Betveen
that and the lecond fringe besan to appear at a lels di-
tance fromthe HTair than that oF the third part OF an
Inch. The second trinse besan to appear at a distance
From the Fair of lels than halean Inch, and the Madow
betrreen that and the third Frinse at a distance lels than
an Inch, and the third Fringe at a distance less than three
Inches. At orcater distances ther became much inore
sensible, but kept very nearly the Came proportion ot
their breadctis and interrals erhich ther had at their Arst
appearins. For the distance betreen the midale ofthe
first and midale oF the second fringe, iras to the distance
hetureen the middle ot the second and midale oF the
third Frinse, a5 three to tWro, or ten to seven. And.
the lalt ot these trro distances rras equal to the breadth
OF the brighe Lighe or luminous part of the tirst Cringe.
And this breadchrras to the breadth oFthe bright Ligtt
oF the lecond tringe as seven to Four, and to the dark
interval