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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 127, page id 1677894601:0147
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=147
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# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 33 lines, status machine
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Antonius de Dominis Archibistop oF Spilato, in his Bo0k
De Radiis Visus  Fucis, publiched by his Friend Bar-
tolus at Venice, in the VCaE LBFT, and Wrritten above
tiventr Pears betore. For he teaches there horr the
interior Bou is made in round DropS oF Rain by tivo
retractions ot the suns Light, and one reflexion be-
treen them and the exterior by trro retractions and
trro lorts ot rellexions betureen them in cach DroP ot
Nater, and prores his Explications by sixperiments
made witha Phial Full oF Water, and with Cilobes oFGla(S
tilled with WVater, and placed in the sun tomakie the
COlOurS OF the tmo BOS appear in theim. ThC CamC
Explication Des-Cartes hach purtued in his MetCOES,
and mended that ot the exterior BOW. But Wrhils they
undersood not the true origin oF Colours, its necestary
to pursue it here a little Further. For understandins
theretore hor the Bor is made, let a DEOBOF Rain OE
any other spherical transparent Body be reprelented by
the Sphere BNF C, described withthe Center C, and Fis. 24.
Semi-diameter C. NI. And leF AN BC onC OF the SunS
rars incident upon it at N, and thence retracted to f,
erhere let it cither so out ofthe Sphere by retraction to-
vards V, or be resected to C; and at C let it either 50
out by retraction to R, or De reflected toHI; and at II
let it 50 out by retraction torrards S, cuttins the inci
dent ray in Z; produce ANY and R C, till ther meet IM
L, and UpON AZ and NF let FaII the perpendiculars
C. D and C. F and produce C. D till it Fall uxon the cir-
cuinterence at L. Parallel to the incident ray A N dca
the Diameter BO, and let the sine ot incidence out ot
Air into Water De to the sine ot refraction as I to
R. Noi it vou suppose the point ot incidence Nta
MOVE