# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0041
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0041?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 31, page id 1677894601:0041
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=41
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000041.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 33 lines, status machine
# Lines: 33 recognised, mean confidence 0.92
# 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.

made in ic, and che rest be intercepced by che Board.
Then ac che distance ot aboue evelre Feccfrom the Arst
Board I Axed che orher Board, in such manner chac che
midale of che refracted Liphe Which came chrouoh che hole
in che first Board and fell upon che opposice WalI mighe
Pals chrouch che hole in ehis ocher Board, and che rest bC-
ins intercepted by che Board miphe paint upon ic theco-
loured Spectrum oF the Sun. And close behind this Board
I fixed anocher Prism eo refract che Lighe irtich came
chrouph che hole. Then P recurned spccdily eo che Rrst
Prilm, and br curming ic Rowtr to and tro aboue its AXis,
Icaused che Image irhich Fell upon che second Board eo
more up and donn uxon chac Board, chac all IES PaTES
mighe succeslirelr pals chrough che hole in thac Board and
Fali uxon che Prism behind ic. And in che mean time, L
noced che places on che oppolice Wall eo irhich that Lighe
aEcer ies Retraction in che second Prism did pals; and by
che difference ot che places I Found thac the Lighe irtrich
being most retracted in the first Prilm did 90 eo the blev
end ot chc Image, was 2gain more refracted in che second
Prilm chanthe Liohe wrtrich wene coche red end et chat
Image, Wrhich prores as well che Airst Proposition a5 the
second. And ehis happened whether the Axis of che emo
Prilms ivere parallel, or inclined ro one anocher and eo che
tlorizon in any siren Angles.
Illustration. L ec F be che ide hole in the Windo-PHUE, Fic. 18
chrouoh irhich che sun Phines upon che first Prilm ABC,
and lec the retracted Lighe Fal uxon the midale ot che
BOard DC, and che middle pare of thac Lighe upon che
hole O miade in che middle oF thac BOard. Lec this Era-
jected pare oF the Liohe fall again upon che middle of the
second Board de and chere paine such an oblons coloured
mage of the sun as as described in thethird ExperimenE.