Benedictus Stay: Philosophiae recentioris versibus traditae, libri X, tomus III - page 304

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To t rerum feries mediarum, ut corpus in imum
Ne ratione pari, ac fublatis, ingrediatur,
Corporibus mediis, proin ajqua & mobilitate,
Ac fi oculos fubeat, cum primum a Sole profugit
Jamne > coloratas foptena: percipis irc
Lucis particulas, diverfo ut quamque meatu,
Cum nova divifo tranfmittunt corpora tradlu,
Sic quoque diverfa fugiendi mobilitate?
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Utque nitens violee mutari plus via debet
Trans mage confringens corpus ; debere fatendum
Sic celerare magis, cundtofque anteire colores;
Trans minus infringens contra pravertier illis,
Atque aliis citius rubicunda hic lumina ferjd .
Parum led qua: fint diferimina mobilitatum ,
Non finat ipfo adeo pernix agnolfc yolatus:
Si tamen ell aliquis fervandi hxc , unicus cfiet
P ic modus, ha:c ratio , perquirere , quantus ab altis
Sideribus conilet : qui in luce c lt, annuus error,
Atque hoc diverfis in fep.tcm quiercre filis
Scilicet a triquetri diferetis corpore v i t r i ;
Error debet enim citiori in lumine quoque
Efie minor; fed & hinc diferimina mobilitatum
Tenuia funt adeo, ut nulla ratione videri
PoiTint', & vigiles nollros impellere senfus.
Hoc llatui tanthm, & decerni polfit in iflfs.;
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illud , v elo citatem m u ta ri
a lite r in aliis coloratis filis : q u x
m a g is re fran gib ilia fu n t , ca m a ­
g is d eb en t a c c e le r a r i: a tq u e id
nuidero fc h ab e re patet ex e o ,
q u o d in ead em in cid entia a n g u ­
lu s re fr a & u s fu m in o r in i l l i s ,
q u a m in h i s . Si ante o m n e m
re fr a & io n e m
velocitas o m n iu m
c o lo r a to ru m filorum fit eadem ;
h a b e b itu r u tiqu e ratio v elo cita ­
tu m , q u am ca h ab en t in q u o vis
d a to m edio : at cum ig u o r e m u s ,
an id ita fe h a b e a t , ig n o ra m u s
itid em ratio n em ean d em ; pendet
e n im ea x atip .tam a ration e v e lo ­
cita tum , q u as h a b e b an t in x t h e r c ,
q u a m a ra tio n e finuum a n g u li
in cid e n tia ?, fic refra<fti. E u lcru s
p u t a v i t , d tm o n ftra ri p o f l e , v e ­
lo cita tem o m n iu m co lo ra to ru m
filo ru m in x t h e r e effe ean d em
cx c o , q u o d aliter ubi Jovi$ Sa­
tellites e m e rg u n t ex u m b r a , c o s
cern erem u s prius im butos c o fo*
io co lo re , qui celeritatem h a b e ­
ret m a jo r e m : at f u n t , q u i p u *
t e n t , inde nihil evin ci id c irc o j
q u o d Latelles p a u latim e m e r g i t :
ub i ad ven iat p rim a lux p r im x
p a r t ic u lx ejus aifei p e rq u am exi*
g u x , illam fcn fu p ercip i n o n
pofle : ubi a u tem jam m a jo r pars
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