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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 46, page id 1677894601:0218
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=218
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L
rars oF sereral Colours made a5 well by thin Plates or
Bubbles, 25 by. retractions ofa Prilm, have sereral de-
rces ot retransibilier, rherebr those ot cach order,
irhrich at their reflexion trom the Plate or Bubble arc
intermixed rith thole ot other orders, are separated
From them by retraction, and allociated together 1o a5 to
become visible by themselres like ArCS Ot CirclCS. FOT
il the rays vere aIl alike retransible, tis impossible that
the erhritenels, wrhich tothe naked sence appears uni-
Form, Thould by retraction hare its parts transposed and
ransed into thole black and wrhite AFCS.
IE appears allo that the unequal retractions ot dit.
form rays proceed not trom any continsent irregulari
ties; luch a5 are reins, an uneren polistu, or Fortuitous
polition ot the pores ot Cilals; unequul and calual mo.
tions in the Air or Ather; the spreadins, breakins, or
dividins the lame ras into mans diversins parts, Oi
thelike. For, admittins any Tuch irregularities, it rould
De impossible for retractions to render thole Rings (0
verr distinet, and vell detined, a5 ther do in the
24th Obserration. It is necellary theretore that eve.
ry ray have its proper and constant desree ot retran.
sibilir connate rith ic, accordins to wrhich its retraction
15 erer justly and regulariy pertormed, and that sere-
ralrays hare sereral ot thole degrees.
And irhat is Caid oF their retransibiliey may be ala
understood ot their reflexibilitr, thac is ot their dispo.
litions to De relected lome at a sreater, and others at a
less thickness, of thin. Plates oi Bubbles, namely, that
those dispositions are also connate with the rays, and
inmucable; 2s may appear by che 23th, 14ch, and
a5CH