# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0174
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0174?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 2, page id 1677894601:0174
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=174
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000174.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 29 lines, status machine
# Lines: 29 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.

C
2
Obterrations, and then considered and made use ot
Them. The Obserrations are thele.
OB5.
Compressins Erro Prisins hard tosether CtaE Cheir
Sides (Wrhich by chance vere a very little conrez) mighe
Tormerhere touch oie another: L Found the place iI
ertrich ther touched to become ablolutely transparent,
asit ther had there been one continued piece ot CTla(S.
For erhen the Lioht Fell (o obliquelz on the Air, wrtict
in other places ras betreen them,asto be all reflected;
it seemed in that place ot contact to be wholly trans-
mitted, infomuch thatirhien looked uxon, it appearea
like a black or dark Spot, by reason that little Or no
sensible Lisht ras reflected trom thence, as From otter
places; and Wrhen looked through it seemed (as it Wrerc)
ahole in that Air irhich was formed into a thin Plate,
by beins compresed betureen the Cilasses. And throuon
this hole Objects thativere berond mioht De seen di-
Cinctlr, Wrhich could noc at aIl be seen through other
Parts oF the Cilalles irhere the Air as interjacent. AI-
though theCilasses ivere a little convex, vet this trans-
parent Spot was ota considerable breadtn, which breadth
eemed principally to procced trom the vielding inmards
ot the parts ot the Citalses, by reason ot their rutual
pressure. For by prellins them very hard together it
rould become much broader than othermile.
S.