# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0144
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0144?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 124, page id 1677894601:0144
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=144
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000144.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 33 lines, status machine
# Lines: 33 recognised, mean confidence 0.89
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
# Licence: CC BY 4.0, Leibniz Legible. Machine output: do not ingest it as verified text; keep this provenance with the text.
# Wording rule: say "the machine reads it as …", never "Leibniz wrote".
# After the first blank line: the recognised lines in reading order, one per line.

C124
WNhat is said oF Coloursmade by Prisins may be catily
applied to Colours made by the Crlasses ol Pelescopesi
or Microlcopes, or by the humours ofthe Ryc. Forit
the Object. Sla(s oF a Pelescope De thicker on one side
than on the ottier, or it one halE ot the Cla(S, Or One
halFot the Pupil ofthe Fye De corered rith any opake
substance: the Object-stals, or that part of it or oF the
Eyerrhichis not corered, may be considered a5 a Wedse
ith crooked sides, and erery Wedse oF Cilals, or other
vellucid substance, has the effect of a Prism in retractins
che Lishe irhich passes through it.
NTou the Colours in theoth and Toth Fxperiments
OE the hrst Part arise From the ditferent refexibilier ob
Lighe is crident by irhrat ras there laid. But it is obler-
vable in the oth Lixperiment, that Wrhils the suns di
rect Light is vellor, the excels of the bluc-makins
rays in the reflected Beam oF Light MN, suttices only
to brins that vellorr to a pale wrhite inclinins to blue,
and nocto tinse it with a manitestls blue Colour. F0
obtain theretore a better blue, Luled instead ot the yel
lon Light oFthe Sun the white Lisht ot the Clouds, by
rarvins a little the eexperiment a5 Follons.
EX PE R. XVF.
Let HFC represent a Prilm in the open Air, and 5
thefre ottheSpectator, riemins the Clouds by theis
Lighe comins into the Prilm at the plane side FICK
and retlected in it by us bale FlF. LC, and thence soin8
out through its plain sde IIHLR to the Fiye. And
Wrhen the Prilm and Fre are conveniently placedus lo
that che Ansles ot incidence and sellexion at the bale
may
6 15.