Opticks 1717 - Up

flid gretiter 0 bl iquity of their Rays, tas’ to be;
co~ne al’1 very nearly, of equal exteilt with, the;
lied, that is,’ equally difianr’ from the center of
the Rity$ : And then all the Col.ours (4f the
‘fame Rr?g muit be %oiilciderrt, and by their
mixture exhibit a white IXiug, And thefe white
Riugs’ muit: have black and dark Riugs between
them, becaufc they do not @read and interfere
with one another as before And for that read
fan ali’o they muit: become diG&r alid viiible.
to far greatm llurnbeis.~. Eut yet the’ violet bed
itlg obliqueit’. will be iomething more ,dilated
iI1 yroportion to its exterit than the other Co4
lours, and fo very apt tot appear at the exterior
Verges of the white.
! ~nfterwards ) by a greateli obliquity of the’
Rays, the violet and blue bccotne lkore fenfibly,
dilated “rhan the’ red and yellow, and So bemg
farther ren~ovd fiotrk the center of the Rings9
tlieCol.ours jnuft enmgc out of the white in an
order contrary to that which they had before,
the violet a&l blue at the exterior Limbs of
each Ring, and the red find yellow at the interior;
And the violet, by I-
t; bit obI&uity of its rhys , be
‘., jnoft of all .expmdccl-, will
the exterior Limb of~each wh
cotne more, conli>icuot~s than t
Several Series of Colotks >belo
ral Rings; will by their unfol.
I: ‘ing, ljcgill again to i.ntel:fere, and thereby l’e$
;I der the Riugs lcfs diitin& and fiat vifible to i0 9