Opticks 1717 - Up

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which between the fame G&es exhibited the i:mc Colour, as 4 to 3, arid’sby the 21it Obfervation the Colours of thinJBodies,are not varied by var ing the ambient Medium; the thickqY.s o ry a B~bblc of Water, exhibiting any Co- I~uT, will be -$ of1 the thicknefs of Air produtjing the fame Colour. And fo according to qhe fame 10th and zxit Obfervations the thicknefs of a Plate of Glafs, whafe Refra&ian of the mean refrangible Ray, is me&red by the proportion of the Sines 31 to 20, may be 9 of the thicknefs of Air producing the fame Colours ; and the like of other Mediums. I do not affirm, that this proportian of 20 to 3r, * holds in all the Rays ; for the Sines of other Sorts of Rays have other Proportions. But the differences of thofe Proportions arc fo little . that I do not here confider them. On thefe Grounds I phave compofed the following Table, wherein the thicknefs of Air, Wateri and. ,, Glafs, at which each Colour is molt intenl’c ind fpecifick, is exprefled in parts’ of an Inch : divided into ten hundred thouiand equal parts.
(Very black BhClC Beginning Of I Uklr Their C0loul.S Of the *: plue fir& Order, 4 White Yellow I Orange , k.Red Violet Tndigo Blue Orill&T Bright red Scarlet: Of the third Order, Purple indigo Blue Green Yellow Red Bluilh red Bluilh green Green of the fourth Order, Ycllowifl~ green . Red of the fifth Order, i Greenifl~ LluC Red Of the lixtb Order,
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BUDN w 353 .pJ556 1717 c.2
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i * i ! ‘i
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3 f iheir pafing OLIN of one Medium
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j2di-attion be made into kvater, th
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W+LIC~ aFter the if ,AC 3B.9) ClhsL
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Eye grow flatter till it come to a
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The Proof by Experinknts. l&p&. I.
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-*hi& might eolle S COi%hg fiOlll'
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26 1 and XLJT are t o Rays, the fir
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e 29 I firft ill a ads PoGtion to i
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t Ji ’
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&t$e ‘nilgents or breadth of the
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I h2 I than of the red to zand fg d
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I the fame difque of the Sun 7 do i
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‘by the round Image which the Len
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-. ^.
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c 7 found in my one c;lk., ‘tis g
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~xwer tA the Obje 11 the Focus of t
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&fed and illdiI?inPt, -that I could
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1) 86 thefe in ftrength are the red
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t;ure ‘of 2;. Inches, s about x20
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to flick fi~ii. iii the Pitch, they
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Inay be aIfo dcge b compofig ,the $
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8,~ Chufe which depends, not on any
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T R OF. II. THEQR. II. AU hO??lOgel
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&pkritictim;~ red honlsgenei~ Light
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I GX;hX, IX, qX, EX, yX3 aX’MX,to
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c i
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fe+s’ (pf ulm+&l prifn’kkk C0fO
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[ lwo~ . x&sre the white&3k So if t
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2 3, I
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has itood a little, there will appe
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‘r: 13 I fccyarated from One anot
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34 “LTiith an equal quantity of w
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jp 1&&i ~2 feverit forts of Rays, e
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s z>f the hifin, md confequently be
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hg into the Regions of the black, a
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with the deep& violet in that by th
Page 173 and 174: Then let another Priiili 5) I3 G de
Page 175: d f&a~on of the Prifln HIK R x5 gcM
Page 181 and 182: - at a good diltnnce from them. For
Page 187: ound number ) the, gOth exert of an
Page 193: . &wt’ of the Glaffe Circles appe
Page 199: ~han~‘d td green: But that ‘gre
Page 205: I I I: 96 by the two ObjeA-Gladys ;
Page 209: I 200 plain the Inore compounded. A
Page 213: ~Q$t itI’ the 9t4 and zothQb~erva
Page 218: flid gretiter 0 bl iquity of their
Page 223 and 224: Wards the center, e ‘b(h$ ii+ red
Page 227: uw efp& ibe ScIen*fl!. df: IS becom
Page 232 and 233: Gdnce to ti hole throu h which fame
Page 234: PRoi'. Ii& The ifW+tZ Of Bodies aid
Page 246: C 2 311 firaitncfs of the Nledium p
Page 251: 1 And hence we may undcrflnnd that
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Pat’t, A thin Plate of ($lafs tra
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e 2 ‘99 I to+ of an Inclias 34386
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[ 283 ] n&Y 1c-J. When the beam of
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28-l ‘1
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,^, ’ ., .
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,/ ,/ . ,.
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ed without. ii fecond Fringe was al
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fee Light which paGed by, &ll on a
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$M...--- _I--..I_ c--.___(-_I__ I I
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II 315 I a darlq#ce ; Wood, Flefh a
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and cons;cstcd into F~mc xnd V:ipou
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I 3PT J &A 21:. IS l.YOthis b’kdi
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Property We have in the RefraEtion
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of thc&1ryM, C foolid k’hgk at th
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333 ed after the ~diial manner, and
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And fince thet’e D$pofitions.- we
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2237 ] fLilling Particle, to genera
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f 3 Lp! ] c&vm v:e ‘can nj&e b&J~
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345 1 by their immediate prcf&’ t
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tue bdged in certain Sides both of
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[ 353 -j . letit I-M, doe$ IlOt thi
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very ftrongly. And for explaining h
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fkllf2 quantity Of attrac”cing Su
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- er Attratiion, are not feparated
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continue longer i ut unlefs the &Ta
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I 379 1 turd Sp&cles, and other Org
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nomena proceeding from them, and pr
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Cdtntogzle of Books prdafed for a?z
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-- .-__. _.“___^ ---.I__ ..Y .-_-
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_._-_. -.-_----- s . .._~ r- _-., .
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I-~ --- 1...-s ..___ ---I- ----l
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S\ Rook I. Par-t KHate lL
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&----I //lf I , ______,_ __ ____ __
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Opticks 1717 - Up

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