Opticks 1717 - Up

IT3
2
the Colours are feepar~3tcd b re the Eight paL
ks by the Hair, the leaii- refran&!c Ik~ys, which
whei1 feparnred ~~0111 the reftc 1lld~C red, were
MeAed at a greater &fiance from the Hair, fo
as to make three 1-4 Fringes at a greater di-.
fiance from the middle of the Shadow of the
Hair ; and .thc mo11: refrangible Rays which
when feparated die violet , ‘were inikc‘tcd ac
a lefs diitance from the Hair, fo as to make
three violet Fringes at a leik diflnnce from the
iddle of the Shadow of the Hair. And other
ays of intermediate degrees of Refrangibility
were infle&d at intermediate diftances from
the Hair, fo as to m&e Fringes of intermediate
Colours nt intermediate difiances froiri the middle
of the Shadow of the Hair. And in the
fecond Qbfervation, where all the Colours are
mix’d in the white Light which plies by the
Hnir3 thefe Colo~rs are feparated by the vnri-
OLX infkxions of the @AJS P and the Fringes
which they make appear all together, and the
. iiq-rerinofi .Fringes being COIitigLlOLlS make one
broad Fringe compofed of all the Colours in
‘due order, the violet lying on the inlide of the
Fringe next the Shadow, the red onYthe outiIde
fktheit from the Shadow, and the blue j
green and yellow, in the middle. And, in like
manner, the middlemofi Fringes of all the Colours
lying’ in order, and being contiguous )
make another broad Fringe compofed of all the
Colours; and the outmoit Fringes of all the
6olo~zw lying in order, and being contiguous,
make a third broad Fringe compofed of all the
$Ikdour~, The& are the three Fringes of co-
JouSd