# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0034
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0034?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 24, page id 1677894601:0034
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=34
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000034.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 36 lines, status machine
# Lines: 36 recognised, mean confidence 0.91
# 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.

T2
Fractions Sidemays, I eried whac vould be che Ffects ot
Such a second Retraction. For chis end Pordered all chings
as in che chird Fxperimene, and chen placed a second Prilm
immediatel atcer che tirst in a cross Posirion eo ic, thac ic
mighe again retract che beam of the suns Liphe which
came eo ic chrough che tirst Prilm. In che first Prilm ehis
bcam as retracted uprards, and in che second Sidevars.
And I Found chac by che Retraction oF the second Prilm
chebreadch ot che Image mas noc increaled, buc ies supe-
rior pare which in che trst Prilm Cuffered che greater Re-
traction and appeared riolet and blen, did again in che
second Prilm Cutter a greacer Retraction chan ies inferior
parc, wrhich appeared red and vellon, and chis wichoue
any Dilacion ot che lmage in breadch.
Illustration. L et S represent che Sun, F the hole in the
Windor, ABC che first Prilm, DHI che second Prism, Y
the round Image ot che sun made by a direct beam ot
Liohe when che Prisus are catcen awar, P Y che oblone
Image oF che sun made by chac beam palsins chrouoh che
First Prism alone irhen the sccond Prilm is takcen avar, and
pe che lmage made by che crols Retractions oF boch
Prilms cogecher. Now it che Rays irtrich cend cowards
the sereral Poines oF che round Image Y ivere dilared and
spread by che Retraction oF che frst Prilm, (0 chac they
Thould noc any longer 80 in single Lines ro lingle Points,
but chat everr Ray beins splic, Chatrered, and changed
From a Linear Ray co a Superticies of Rays diveroino
From che Poinc of Retraction, and lying in che Plane ot
che Angles of Incidence and Retraction, cher Chould
90 in chole Planes to (0 mans Lines reachins almost
trom one end ot che Image PP eo che other, and it
thac Image Phould thence become oblons: thole Rays
and chei lereral pares cendins conards the sereral Points ot
the
14