DelMonte, Guidubaldo
,
In duos Archimedis aequeponderantium libros Paraphrasis : scholijs illustrata
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archimedes
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taſſe quiſpiam, vel ambas, inquiens, centri grauitatis defini
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tiones allatas, diminutas eſſe; vel ijs, quæ modò à nobis de
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cẽ
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tro grauitatis dicta ſunt, repugnare; cùm oſtenderimus cen
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trum grauitatis aliquando eſſe, vel in ambitu figuræ, vel extra
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figuram; definitiones verò allatę ſemper ſupponunt illud eſſe
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in ipſis intra
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expan
abbr
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poſitũ
">poſitum</
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.
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abbr
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Cõfirmaturquè
">Confirmaturquè</
expan
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difficultas, quandoqui
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dem, ne〈que〉 huiuſmodi centrum extra figuram conſtitutum,
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fuiſſe Archimedi prorſus ignotum, exiſtimare debemus; vt
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colligere licet ex nono poſtulato huius libri; cùm inquit.
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<
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Omnis figuræ, cuius perimeter ſit ad eandem partem concauus, centrum
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grauitatis intra ipſam eſſe oportet.
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type
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quaſi non repugnet figurę peri
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metrum non ad eandem partem concauum habenti, extra
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ipſam grauitatis centrum obtinere. </
s
>
<
s
id
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N108D0
">Cui obiectioni in hunc
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modum occurri poterit, ſi dixerimus, quòd quamuis exempli
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gratia in figura C dictum ſit centrum grauitatis D extra fi
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guram exiſtere, id ipſum etiam intra figuram eſſe affirmati
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poterit. </
s
>
<
s
id
="
N108DA
">ſiquidem ambitus figurę C centrum D intra ſe
<
expan
abbr
="
cõ
">com</
expan
>
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lb
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tinct; ita vt reſpectu tötius ſit intra. </
s
>
<
s
id
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N108E2
">idemquè dicendum eſt de
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altera figura A. hoc autem euidentiſſimum eſt in figura E.
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& hic eſt ſenſus definitionum centri grauitatis. </
s
>
<
s
id
="
N108E8
">His ita〈que〉 pri
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lb
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mùm cognitis conſideranda eſt intentio Archimedis in his li
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bris, quę quidem vt plurimum à librorum inſcriptionibus e
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luceſcere ſolet. </
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</
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<
figure
id
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id.077.01.018.1.jpg
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xlink:href
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number
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<
p
id
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type
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head
">
<
s
id
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N108F6
">DE SCOPO HORVM LIBRORVM</
s
>
</
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<
p
id
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type
="
main
">
<
s
id
="
N108FA
">Si Archimedis propoſitum in his libris ex ipſa operis in
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lb
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ſcriptione, vt in alijs quo〈que〉 aliorum authorum volumini
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lb
/>
bus fieri vt plurimùm ſolet, inueſtigandum erit, partim ſanè
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lb
/>
conſpicuum illud eſſe videbitur, partim verò ignotum adeò,
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vt potiùs nullius fermè rei ſe habiturum eſſe ſermonem profi
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lb
/>
teatur Archimedes. </
s
>
<
s
id
="
N10906
">quid enim (obſecro) verbis illis ſignificari
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lb
/>
potuit, 〈que〉 primi libri initio ita ſe
<
expan
abbr
="
habẽt
">habent</
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>
.
<
foreign
lang
="
grc
">Aρχιμήδους ἐπιπέδων ἰσορ
<
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ροπιχω̄ν, ὴ κέντρα βάρων ἐπιπέδων.</
foreign
>
hoc eſt.
<
emph
type
="
italics
"/>
Archimedis planorum æ〈que〉pon
<
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/>
derantium, vel centra grauitatum planorum.
<
emph.end
type
="
italics
"/>
quando quidem vide
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lb
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tur Archimedes rem prorſus
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expan
abbr
="
inutilẽ
">inutilem</
expan
>
, quinnimò naturę repu
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lb
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gnantem ſibi contemplandam proponere. </
s
>
<
s
id
="
N10924
">dùm enim </
s
>
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>
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>
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>
</
archimedes
>