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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 39, page id 1677894601:0049
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=49
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 34 lines, status machine
# Lines: 34 recognised, mean confidence 0.90
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OF 45 degrees, A its RectangulaF V extex, FMI a beam oF.
the suns Lighe let into a darke Room chrouoh a hole 
one chird part of an tnch broad, M its Incidence on theBale
oF che Prilm, MI C a lels retracted Ray, MI HI a more retract-
ed RaY, HI N che beam of Lighe reflected trom the Bale,
V X Y che second Prism by irtrich chis beam in passins
chrouoh ic is retracted, NV+ che lels retracted Lighe oF this
beam, and Np the more retracted part chereot. When che
trst Prilm AB C is curned abouc ies Axis accordins co the
order ot the LetterS AB C, che RaYS M H emerge more
and more obliquelr our ot chat Prilm, and ac lenoch atter
cheir most oblique Emergence arc reflected comards I,
and goins on to p do increale che number of che RayS VI p.
Atcerrrards by continuine che mocion of che tirst Prilm, che
RaySMTC are alo reflected ro WI and increale che number ot
the RayS NF. And cheretore che Li∞HE MI N admits into
us Compolition, trst che more Retransible RayS, and chen
the less Retransible Rars, and vec atcer this Compolicion
15 oFche Pare Nacure rrich che sun simmediare LighE FMI,
che ReRlexion oF che specular Base B C caulins no AIter2-
tion cherein.
Exper. 10. Trro Prisins, which ivere alikce in Chape, 
cied so cogecher, thac their Axes and oppolue Sides beins
Parallel, cher compoled a Parallelopiped.. And, che Sun
Phining into my dark Chamber chrough a licele hole in che
Windon-PhUE, I placed. thac Parallelopiped in his beam ac
Come distance From chehole, in such a polture thac the AXeS
OF the Prilms mighe be perpendicular eo che incidene RayS,
and chac chole Rays being incident uxon che first Side ot
one Prilm, mist 00 on chrouch che ciro contiguous Sides
oF boch Prilms, and emerse out of the last Side oF the sc-
cond Pris. This Side beino Parallet co the Arst Side ot
che first Prilm, cauled che emergins Lighe to be Parallel
C