Biancani, Giuseppe
,
Aristotelis loca mathematica
,
1615
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152
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quia in nulla proportione fertur, propterea per circularem lineam B E C,
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progreditur ad C, ita vt ipſa diameter B D, in poſitione A C, fiat perpendi
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cularis priori diametro B D. ex quibus ſequitur eam moueri duobus moti
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bus nullam rationem habentibus; quod erat intentum.</
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<
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id
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s.002628
">Hoc modo Ariſt. probare conatur, lineam circulum deſcribentem, dua
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bus ferri lationibus, quæ nullam habeant analogiam: Verùm, vt liberè fa
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tear nullo modo mihi videtur intentum aſſequi, nam
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neq;
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ex dictis pater,
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ipſam duobus motibus ferri, quibus opus eſſet: neque patet eos (quamuis
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concedantur) nullam inuicem habere analogiam: qui enim fieri poteſt, vt
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duo motus reperiantur, quì nulla ſe mutuò habitudine reſpiciant? </
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<
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id
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s.002629
">Præte
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rea ſi B, ferretur illis motibus, non ſequitur debere moueri per lineam cir
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cularem, cum præter lineam rectam ſint plures curuæ, quæ tamen non ſunt
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circulares, vt ſunt ſectiones parabolicæ, & lineæ ſpirales. </
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<
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s.002630
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241</
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<
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id
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s.002633
">Vt autem cauſa appareat, cur ea, quæ à centro longior eſt linea velocius
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moueatur, ſiue quod in eadem ſemidiametro remotiora puncta à
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abbr
="
cẽtro
">centro</
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>
ve
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locius moueantur, vt ſupra dictum eſt, ſciendum eſt, Quod ſi duo mouean
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tur ab eadem potentia, quorum vnum à quopiam alio mouente plus repel
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latur à motu priori, alterum verò minus, rationi
<
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abbr
="
cõſentaneum
">conſentaneum</
expan
>
eſſe, tardius
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moueri id, quod plus, eo quod minus impeditur; quod videtur accidere
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maiori, & minori illarum, quæ à centro egreſſæ circulos delineant. </
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<
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id
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s.002634
">quoniam
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enim propius eſt manenti eius, quæ minor eſt extremum, quàm extremum
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maioris, propterea plus à centro, cui propius eſt, retrahitur à priori mo
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tu,
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hincq́
">hincque</
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>
; motus eius tardior redditur, ideſt, quia centro propius eſt; hinc
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fit, vt extremum illud deſcribat lineam circularem quidem, ſed tamen
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curuiorem quam deſcribat extremum longioris lineæ, quæ circulum minus
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curuum, ſeu magis ad rectam lineam accedentem delineat. </
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<
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id
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s.002635
">omni quidem
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igitur lineæ circulum deſcribenti iſtud accidit, vt duobus feratur motioni
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bus; vna quidem, quæ illi naturalis, ac ſecundum circunferentiam, qua re
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ctà tenderet niſi impediretur: altera verò, quæ illi innaturalis, qua in tranſ
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uerſum agitur, ſeu ſecus centrum, ob quam cogitur in gyrum duci, minor
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autem linea ſecundum hanc motionem innaturalem plus fertur, quàm ma
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ior, ideſt plus ipſius progreſſio inflectitur in orbem; quia enim eſt centro
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vicinior, quod quodammodo retra
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hit à motu naturali, propterea ma
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gis vincitur, quàm remotior. </
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<
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s.002636
">Quod
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ex his erit
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manifeſtũ
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. </
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<
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s.002637
">ſit circulus vbi
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B C E D, & alter in eo minor, vbi
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N M O P, circa idem centrum A. &
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proijciantur diametri in magno qui
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dem C D, B E, in minori verò M O,
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N P. & altera parte longius quadri
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laterum compleatur D K R C. ſi igi
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tur ſemidiameter A B, circumacta
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deſcribit circulum maiorem, reuer
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titur tandem ad locum B A, vnde di
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greſſa eſt. </
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<
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id
="
s.002638
">ſimiliter M A, circumuoluta </
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