Guevara, Giovanni di
,
In Aristotelis mechanicas commentarii
,
1627
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nec minus etiam, quia in fundæ vſu manus quidem fit cen
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trum: funda verò, quod à centro exit? </
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<
s
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">Quanto autem pro
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ductius fuerit id, quod à centro eſt, tantò citiùs mouetur.
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</
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<
s
id
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">Tactus autem, qui manu fit, fundæ reſpectu breuis eſt.
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</
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<
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">COMMENTARIVS.</
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<
s
id
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">Dvas hic Aristoreles rationes dubitandi proponit,
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vt explicet cauſam cur longius ferantur miſsilia
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funda, quàm manu miſſa. </
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<
s
id
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N1475B
">Prima eſt, quia proie
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ctor melius miſſilia ipſa manu comprehendit, quàm cum
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funda ſuſpendit: Quod autem melius comprehenditur, va
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lidius iacitur ac propterea longius mittitur: Potius itaque
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manu miſſa, quàm funda proiecta miſsilia longius ferri de
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berent. </
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<
s
id
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N14768
">Secunda verò ratio eſt, nam
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abbr
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cũ
">cum</
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>
funda quis proijcit;
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duo ſimul mouet
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abbr
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põdera
">pondera</
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; fundá nempe
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abbr
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ipsã
">ipsam</
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>
, & miſsile, quod
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proijcit;
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abbr
="
abſq;
">abſque</
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autem funda
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expan
abbr
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nõ
">non</
expan
>
mouet niſi proiectum: At am
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plius quilibet mouere valet quando
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expan
abbr
="
totã
">totam</
expan
>
eius vim applicat
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in vnum, quàm cum diſtribuit in plura: Ergo magis ac remo
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tius proiector manu mittet, ac proijciet, quàm funda. </
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<
s
id
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">Duplicem deinde cauſam propoſiti
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abbr
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experimẽti
">experimenti</
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aſsignat,
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vna eſt, quia per fundam agitatum atque commotum miſ
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ſile mittitur. </
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<
s
id
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">Siquidem priuſquam emittatur, ac è funda
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elabatur, eadem funda circumagitur, ac rotatur; manu au
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tem non niſi quieſcens proijcitur: ita vt ſtatim proiectio
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poſt quietem ſequatur,
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expan
abbr
="
ſumatq.
">ſumatque</
expan
>
initium à loco vbi mane
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bat, nempe ab ipſa manu. </
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>
<
s
id
="
N147A9
">Omnia autem cum in motu ſunt,
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facilius vlterius per nouum impulſum feruntur, quàm cum
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quieſcunt, ac tunc primò moueri coguntur. </
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>
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<
s
id
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">Quocirca vt hæc doctrina iuxta rei veritatem clarius elu
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ceſcat, obſeruandum eſt, proiecta in rigore loquendo non
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ſtatim poſt quietem è manu iaculantis elabi; ſed aliquan
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tulum ſaltem prius manu ipſa comitante moueri antequam
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emittantur. </
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<
s
id
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N147BD
">Motus enim brachij iaculantis arcum quen
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dam ſemper deſcribit, in cuius fine, non autem in principio
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miſsilia proijciuntur; & quò longius proijcienda ſunt eò </
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