Tunc1 quoque latelcens , aliaque abdudia fecantc
Alterutra ex ipib concurfu fimbria, dudtu
Tali flectit ite r, de fedto tertia cono
Qualem conficeret fpec.es, qure accederet iftic
i ? o $
Umbrai extremre infinite , projiceret quam
Cultri acies dircdla fui, atque acccdcret illic
Infiniti itidem regioni, requaliter umbris
Qure foret inclinata, ubi fit concurfus earum*
Si * radium triquetro difeerpas in fua fila
ipco
Ante v itro , nofces, cujuivis corporis umbra,
Fimbria fi inficiat , fo re, ut illo tinfla colore
Tantiim extet, cujus lux prreter corpus agetur.
Prreterea poftquam feptenas feceris illas
ln tc rle varias fuco feptemplice, rubras
191$
Inveniens aliis magis amplas elfe, minores
Contra, qure violre pallentis lumine fulgent,
A t medio medias fieri fub imaginis au flu .
Quin fpatia inter fe , atque iplos quarumlibet au6his,
Vel prope', vel longe fuerint quocumque reccptre
1920
Forte loco charta nitida fuper, ipfe videbis
Mutari fimili prorfus ratione modoque .
Ergo rubens oritur queis fimbria, dum prope corpus
Tranfcurrunt ra d ii, fpatio majore jubentis
Acci-
3
o
8
P H I L O S O P II I
AI
1 H ic in n u its ta n tum m o d o , qure
N c v v to n u s fufe c x p o ( u it in O b
fe rv atio n e 10 , ubi o m n ia fiunt
clariora ope febematis a d j e f l i . E x
prim it N o fte r tan tu mm o d o du-
f l u m fim briarum poft dccuflatio-
n e m , q u i accedit ad form am
hypcrbolre, eam n im irum is fem
per n om in a t tertiam fe flio n em
c o n i , cu m ubi de coni fe flio n i-
bus e g i t , eam tertio loco pro-
p o f u e r i t . H y p e rb o la habet b i
nas a s v m p t o t o s , five r e d a s , ad
quas ipfa utrinque in in fin itum
p r o d u fla accedit in infinitum . Eas
a sym p to to s exhibet N o f t e r : al
tera eft ipla illa re fla rcfpondcns
aciei ejus cultri , ad q u am ca
fim bria pertinet , q u x re fla ipfius
ju a b ra m t e r m in a r e t, fi nulla ra
d iorum inflexio h aberetur ; altera
r e fla x q u e inclinata ad umbras
ipfas cu ltro ru m , q u x
n im irum
eft perpendicularis r e f l x fecanti
bifariam a n g u lu m u m b ra ru m .
i
H x c d em um cxccrpra funt
cx o b ferv atio n e N c v v to n i un deci
m a , q q x eft ultim a c pertinen
tibus ad h o c a rg u m e n tu m . Si,
a n t e , q u am ^radius
incidat ia
a ltero s, d ivid atur per prism a ia
fuos c o l o r e s , & finguli c o lo r e s ;
im m ittan tu r in ipfos fco rfu m j
fim b rix apparent ejus coloris ta n
tu m m o d o 5 porro am pliores funt
fim b rix m inus refran gibilium c o
lo rum ♦ ut r u b e i, a rflio re s m a
gis refran gibilium , ut violacei ,
m e d ix m ed io rum , ut v ir id is , q u x
qu id em diferim ina o b fe rv a n tu r ,
