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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 126, page id 1677894601:0146
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=146
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(126
Thither, but erery irhere betreen t and c, many ol
thele rars riil set through the base and be retracted;
and the lame is to be understood ot the meanly reFFAN-
sible rars on cither side ofthe point r. Whence it Fol
lorrs, that the base oF the Prilm must everr irhere BC-
trcen t and B, by a total reflexion oF aII Corts OF rayS to
the Fye, look irhite and brioht. And every irhere
petrreen and C by realon ofthe trantinission ot many
cars oferery lort, look more pale, obscure and dark.
But at L, and in ottier places betireen pand E, Wrhere
all the more retransible rays are refected to the Fye,
and mans ot the lels retransible are transmitted, the
excels oFthe most retrangible in the reRected Lioht will
tinse that Lioht rith their Colour, wrhich is violet and
blue. And this hrappens by takins the line C. pPFB anV
irhere betreen the ends ot the Prilm II CF and F I.
PROP. TZ. PROB. IV.
By the discovered Properties of Fisht to explain ibe
Colours of the Rain- b020.
Phis Bor never oppears but irhere it Rains in the
Sun-hine, and may be made axtificially by spoutine up
Water irhich may break alost, and scacter into DrOpS,
and Fall dorn like Rain. For the Sun ining upon thele
Drops certainly caules the Bor to appear to a Specta
tor Handins in a due position to the Rain and Sun. And
dence it isno agreedupon, that this Bou ismade by
retraction of the suns Light in Drops oF Falling Rain.
This as understood by lome ot the Ancients, and ot
late more tully discorered and explained by the Famous
Antonius