Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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ſint libræ, eo quod in ea inſint ſparta multa: fortaſſe idem
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intellexit per multa, vel multas, ac plura, vel plures; cum no
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men Græcum
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vtrumque ſignificet, & à Cicerone
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<
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in Timæo Platonis vertatur plures. </
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<
s
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N15855
">Niſi etiam cum
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Baldo rectè dixerimus, ſtateram tot libras conſtitui, quot
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ſunt tranſlationes appendiculi de loco ad locum; quia toties
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variatur proportio,
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abbr
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proindeq.
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etiam libra. </
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<
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id
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N15862
">Quare gratis ad
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exponenda verba Ariſtotelis putat Blancanus ſtateræ ap
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pendiculum apud veteres fuiſſe immobile,
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abbr
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ipſamq.
">ipſamque</
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ſtateram
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ex tot ſpartis, ſeu trutinis conſtaſſe, quot erant metienda
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pondera: Quamuis alioquin id non fuerit impoſſibile, ſed
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laborioſum duntaxat, & inutile. </
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<
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">Diximus, non impoſſibile: Nam quolibet in lance onere
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impoſito, eſt adinuenire centrum grauitatis totius ſtateræ
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ſic conſtitutæ, ex quo ſi ipſa per trutinam ſuſpendatur,
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ſtabit
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abbr
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æquiponderabitq.
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appendiculum immobile ipſi one
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ri in lance impoſito. </
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<
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">Vnde ſingula puncta longitudinis ſta
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teræ conſtitui poſſunt centra grauitatis reſpectu diuerſorum
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onerum imponibilium, ac in quolibet illorum poterit truti
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na locari, quæ ad determinatum ſuum onus librandum de
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ſeruiat. </
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<
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id
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N1588F
">Diximus tamen hoc eſſe laborioſum, & inutile,
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tum quia difficilius eſt multiplicare trutinas,
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totam
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ſtateram diuerſis ex punctis ſuſpendere ad quamlibet oneris
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differentiam dignoſcendam, cum ſola appendiculi mobili
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tate, atque diſcurſu id conſequi poſſit: tum etiam quia ad
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pauciora onera libranda,
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abbr
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paucioresq.
">paucioresque</
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admodum ponderum
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differentias percipiendas deſeruire poſſet ipſa huiuſmodi
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ſtatera. </
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<
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id
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N158A8
">Cum certè multiplicari trutinæ non valeant ad nu
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merum linearum, aut denticulorum, in quos modò diuer
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ſum eſt brachium ſtateræ, & in quos diſcurrens appendicu
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lum pro opportunitate transfertur, vt ſingulis notis, ſeu li
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neis, ſingula onera trutinentur, ac determinatè quodlibet
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eorum pondus diſtinctiſſimè innoteſcat. </
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<
s
id
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">Addit autem Ariſtoteles quòd quantò propinquius one
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ri in lance, vel vncis appenſo ſpartum conſtituitur, tanto
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magis onus ipſum, ſeu maius onus valet ſtatera leuare. </
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<
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