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# Title: Philosophical Principles Of Natural Religion (shelfmark Leibn. Marg. 53)
# Folio 194, page id 797370323:0352
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94
phnolovbicat ve
n
the other different degrees oF density or
chicknels or thinnels, ot the prominene
litele parts, of the Surtaces ot Bodies.
Licht acts uxon Bodies byheatins, distol.
vins, and puting cheir pares in a vibratine
Mocion; a5 allo Bodies act uxon Licht, in
drawins its pares tothem, and that in Lines
perpendientar to their surtaces: AIthe dif.
Ferenely reflexible Lieht, obserres this one
Lair, thac all che difterent Aneles oF In
cidences are respectirelr equal to the An-
les ot Restexion; and alt the disferents
Refransible Rays oF Licht, obserre one
Lar likevile, viz. thac in aIl the obti-
quities of the Pame Ray, to the Plane ot
Incidence, the Sines ot the Aneles oF In
cidence, are to che sines ot the Aneles ot
Refraction in a constant ratio; and both
thele Properties procecd From one, and
the Tame Principle, actins in diferenE
Circumstances, viz. that Bodies actract
Lieht in Lines perpendicular eo cheir Sue
C
Faces, and thac this aetraction is equal in
allthe Incidences, and Refractions at equat
Diltances trom che sume Plane, ane he
restectect
restet
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destet
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