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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 5, page id 1677894601:0177
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=177
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5
it parallel to the Prisms, Lcould sec the Cireles much
distincter and risible to a tar greater number than
Otherwile.
OBS. IV.
Pooblerre more nicely br the order ot the Colours
Wvhich arose out ot the white Circles a5 the Rays DC-
came less and lels inclined to the plate ot Air; l took
tiro Object Glasses, the one a Plano-conrex For a Four-
teen-Foot Telescope, and the other a larse double con-
rex For onc ot about fter-Foot; and upon this, larins the
Other rith its its plane-side dornmards, I pressed them
llowlytogether, to make the Colours succeltirely emerse
in the midele ot the Circles, and ehen Romly listed
the upper Glass trom the lorver to make them succet-
Cively vanistr acain in the Came place. The ColouI,
irhich by pressins the Cilasles together emerged last in
the middle oF the other Colours, rould uxon its Arst
appearance look like a Cirele ot a Colour alinost uni-
torm trom the circumterence to the center, and by
comprellins the Clables siil more, gro continuallu
broader until a ner Colour emersed in its center, and
thereby it became a Rins encompallino that new C0-
lOur. And DV compressins the GElastes Rill more, the
Diameter ot this Rins vouid encrease, and the breadtm
oF its Orbit or Perimeter decrease until another nem
Colour emerged in the center ot the last: And IO OI
until a third, a Tourth, a fitth, and other Follorina
nem Colours successirely emersed there, and became
Rinos encompassino the innermost Colour, the last ot
rhich as the black Spot. And, on the contrarY, by
littins