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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DISPVTATIONES.
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& in linea
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imaginemur punctum fixu@, quod fit
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imaginemur etiam inter
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@.
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a. vnam lineam rectam
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& inter duas parallelas dictas
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fixam, & motus punct@i
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fit ab
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verfus
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ita ut
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fecet
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in puncto
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quod interfectionis punctum mo-
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uebitur ab
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verfus
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continuò, in tempore infinito, neque vnquam idem erit cum
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puncto
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">Non eſſe ſolis calorem à motu localι ipſius corporis ſolaris,
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ut Ariſtoteli placuit.</
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<
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">JD nullo planè modo eſt admittendum quod Ariftoteles credidit calorem folis à
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motu locali ipſiuſmet corporis folaris, & non à lumine, prouenire, quemadmo-
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dum manifeftè aſſerit primo metheororum cap .3. circa finem fic fcribens.</
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<
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xml:space
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">Vtigitur repor gignatur atque calor, folis latio duntaxat, ſatis eſt eſſicere, & c. ſed
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cap .7. lib. 2. de cælo fic ſeribit, Caliditas autem ab ipſis,
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ideo fit, quia aer
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ab illorum motione fricatur.</
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<
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xml:space
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">Vbi non folum oftendit fe opinari, quòd motus corporum cœleſtium fit caufa ca
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loris, ſed eriam luminis, paulò autem poſt dicit, ſuperiorum autem corporum vnum
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quodque fertur in ſphæra, vt ipſa quidem non igniantur. </
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<
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xml:space
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">Opinio profecto abfur-
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da. </
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<
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xml:space
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">Nam cùm corpus ſolate fixum fit in ſpisfitudine ſui orbis deferentis, fe-
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cundum communem opinionem, non mouetur per fe, ſed accidentaliter, cum ſei-
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licet fertur à dicto ſuo orbe, vnde fieri poteſt, vt in motu fui orbis, nullum ex
<
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orbibus fuorum deferentium augis fricet, fed fi fricaret, id faceret mediante vno fo
<
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lo puncto, vt cuilibet, aliquantulum in mathematicis verfato patet. </
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<
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xml:space
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">Quam ob cau
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ſam, rationi
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non eſſet credere, quòd tantùm caloris gigneretur. </
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<
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xml:space
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">Quod
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tamen fi posſibile eſſet, quid ergo fricatio ſuperficierum orbis ſui, cum iis, quæ funt
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deferentium augis efficeret? </
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tamen hoc fieret, vt ſcilicet à fricatione fuper
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ficierum procederet calor, nil planè diferiminis inter hyemen, & æftatem intercede
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ret, nec inter calorem diei, & noctis, nec inter unam horam, aut alteram; </
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<
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xml:space
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">fed fecun-
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dum Ariftotelis rationes, Venus,
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, magis calefacere quam fol de
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,
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cum ita ſint veloces vt ipſe Sol, & eodem magis propinqua terræ. </
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<
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ſtotelis
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,
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type
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alium
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type
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<
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type
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quam folem
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philofophi ſupra
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eſ-
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ſe. </
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menfe Decembri, quam Iunio, magis inualeſceret calor,
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cum huiuſmodi menſe ſolad nos propius accedat, quam menfe Iunii. per differen-
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tiam maiorem diametro regionis elementaris, (nam folaris eccentricitas maior eft
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ſemidiametro
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type
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regionis) non confiderans Ariftoteles differentiam ca-
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loris, quæ naſcitur ex eo,
<
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Sol aut altius ſupra orizontem excurrat, aut infra
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feratur; </
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<
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">neque eam, quę à longitudine, aut breuitate diei proficiſcitur. </
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<
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ſtoteles eodem cap tertio Metheororum intelligit de motu rapto, ideſt diurno, ſiue
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dicamus vniuerfali, hinc ſequi deberet,
<
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norm
="
qui
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type
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Sol maiorem caloris uim menſe Martij &
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Septembris, quàm aliis menfibus, profunderet, quia in iiſdem temporibus, ſol virtu
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te huiuſmodi motus velocior exiftat, quàm alio quolibet tempore anni, cum tunc
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per æquatorem circuũoluatur. </
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<
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xml:space
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">Multa quoque alia incommoda ſequerentur ſi Ari
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ſtorelis rationes admitteremus. </
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<
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xml:space
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">Sed clarè uidemus, mediante refl exione aut refra-
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ctione radiorum folarium,
<
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norm
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type
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vniente ſeſe lumine, unitur quoque, & augetur calor,
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atque omnis res ad comburendum apta accenditur, & inflammatur. </
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<
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