Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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<
chap
id
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N10019
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<
pb
pagenum
="
204
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xlink:href
="
005/01/212.jpg
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<
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id
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N16062
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<
s
id
="
N16064
">Deinde propria Baldi ſolutio, quam ex proprijs cauſis
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ipſe ait eſſe deſumptam, nullam cauſam affert propoſiti effe
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ctus ad diluendam difficultatem, ſeu rationem dubitandi,
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ſed rurſus noua duntaxat via idipſum demonſtrat, quod Ari
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ſtotelis argumento demonſtratum eſt de veritate ipſius ef
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fectus, nempe punctum A per longiorem diametrum AD,
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illis duabus lationibus ferri eodem tempore, quo punctum
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B fertur ſuper minorem diametrum BC; quod eſt citius
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moueri: nihil attingens de cauſa cur id contingat, ſeu ob
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quam punctum A, eodem tempore maiorem valeat li
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neam pertranſire,
<
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abbr
="
proindeq.
">proindeque</
expan
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velocius moueri; id quod opti
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mè fecit Ariſtoteles vt vidimus. </
s
>
</
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<
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id
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N16081
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type
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<
s
id
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N16083
">Secunda autem difficultas, quam Philoſophus hac in
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quæſtione proponit, eſt, cur in eodem rhombo punctum B,
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quod vt diximus ſua ſponte fertur ſuper latus BA,
<
expan
abbr
="
totamq.
">totamque</
expan
>
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lb
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eius longitudinem percurrit; minus quippe pertranſeat ſpa
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lb
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tium, quàm totum ipſummet latus BA, in quo fertur verſus
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CD; imò quàm ſit ipſummet latus BA, quod percurrit.
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</
s
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<
s
id
="
N16095
">Quandoquidem punctum B non conficit niſi ſpatium BC:
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totum autem latus BA conficit ſpatium BD, ſeu AC,
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quod maius eſt quàm BC. </
s
>
<
s
id
="
N1609D
">Sicut ipſum latus BA maius
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conſtituitur, quàm diameter BC in rhombo propoſito.
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/>
</
s
>
<
s
id
="
N160A3
">
<
expan
abbr
="
Totaq.
">Totaque</
expan
>
ratio difficultatis in eo ſita eſt, quoniam punctum
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lb
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B, duplici fertur latione, latus verò AB, vnica, &
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vtrunque pari velocitate: Quamobrem potius punctum
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B, quàm latus BA, ſequeretur maius ſpatium pertranſi
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re. </
s
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<
s
id
="
N160B1
">Accedit quia punctum B verè totum latus BA, in
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quo fertur percurrit eodem tempore, quo vehitur cum ip
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ſomet latere verſus CD; ideoque ſatis arduum videtur,
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minus ipſum B ſpatium pertranſire quàm ſit latus BA, in
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quo fertur. </
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>
</
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<
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id
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N160BE
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type
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main
">
<
s
id
="
N160C0
">Sed vnde hæc dubitandi ratio deſumpta eſt, inde pariter
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adeſt ratio difficultatem ſoluendi. </
s
>
<
s
id
="
N160C5
">Etenim hoc ipſo, quod
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punctum B feratur duplici latione explicata ſuper diame
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trum BC, latus verò BA vnica vel ſimplici motione
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vehatur verſus CD, hoc quidem à nullo motu contrario </
s
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