Benedetti, Giovanni Battista de
,
Io. Baptistae Benedicti ... Diversarvm specvlationvm mathematicarum, et physicarum liber : quarum seriem sequens pagina indicabit ; [annotated and critiqued by Guidobaldo Del Monte]
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xml:space
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natur alium localium ab Ariſtotelis placitis
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recedamus.</
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<
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locales naturales deceptus fuerit, ſunt quædam primo veriſſima & obie-
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cta intellectus perſe cognita pręſupponenda, ac primum quælibet duo corpora,
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grauia, aut leuia, area æquali,
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figura, ſed ex materia diuerſa conſtantia,
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q́ue</
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modo ſitum habentia, eandem proportionem velocitatis inter ſuos motus loca
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les naturales, ut inter ſuamet pondera aut leuitates in vno
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medio, ſeruatu-
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ra. </
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rem tarditatem, aut velocitatem gigni, quàm à .4. cauſis (dummodo medium vnifor
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mè ſit & quietum) ideſt à maiori aut minori pondere aut leuitate; </
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trum, & circunferentiam extenditur; </
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quòd figuram non variando, nec in qualitate nec in quantitate, neque eiuſdem figu-
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ræ ſitum, motum fore proportionatum virtuti mouenti, quæ erit pondus aut leuitas.
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uerſus non
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alterat dictorum corporum motus, cum figura parua facilius diui-
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dat continuitatem medij, quam magna; </
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tufa; </
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reſiſtentiam ipſorum ſuperfi-
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ciebus, aut habebunt aut recipient, eorum motus inter ſeipſos eodem planè modo
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proportionati conſurgent, quo erunt ipſorum virtutes mouentes: </
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tieſcunque duo corpora vnam
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grauitatem, aut leuitatem, & diuerſas reſi
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ſtentias habebunt, eorum motus inter ſeipſos eandem
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ſortientur,
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eandem proportionem quàm ipſarum ſuperficies habebunt, aut in qualitate ſola fi
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guræ, aut in quantitate ſola, aut in ſitu, aut in aliquibus ex dictis rebus, eo tamen mo
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do, quiſuperius poſitus fuit, vt ſcilicet corpus illud quod alteri comparatum, æqua-
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lis erit ponderis, aut leuitatis, ſed minoris reſiſtentiæ, exiſtet velocius altero, in
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ſi proportio ſuperficiei corporis maioris ſuperficiei minoris ſeſquitertia eſſet, pro-
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portio velocitatis dicti corporis maioris, velocitati corporis minoris, eſſet ſubſeſqui
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tertia; </
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admodum quaternarius numerus ternario maior exiſtit.</
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corporis grauis, in diuerſis medijs, propor-
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tionatam eſſe ponderi eiuſdem corporis in
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ijſdem medijs; </
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totale alicuius corporis grauis ſignificatum
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crit ab
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quo corpore poſito in aliquo me- </
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