# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0173
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0173?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 1, page id 1677894601:0173
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=173
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000173.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 26 lines, status machine
# Lines: 26 recognised, mean confidence 0.83
# 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.

t.C
1
e
NVI
I
P A H
Observations concernine the Reflexions, Refractions, and
Colours of thin transparent Bodies.
I has been obserred by others that transparent
 Substances, as Gla(S, Water, AIr, 1c. Wrhen made
verr thin by beins blonn into Bubbles, or othermile
Formed into Plates, do extribit rarious COlOUES ACCOI-
dins to their rarious chinness, although at a greater
thieknels ther appear very clear and colourlels. In
the Former Book I Forbore to treat ot thele C Olours,
becaule they scemed ot a more difficult consideration,
and ivere not necessarr For ectablitins the Properties
ot Light there discoursed ol. But becaule they may
conduce to Further discoreries for completins the
Pheory ot Lighe, especially a5 to the constitution ot
The pares ot natural Bodies, on Wrhich their Colours or
lranspareney depend: I have here let donn an ac-
count oF them. T0 render this Discourse Chort and
distinct, Phave sirst described che principal ot my
A a
Obter-