Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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fuerat, ergo à temporanea aeris rarefactione, & dila
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tatione
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ſpatiũ
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illud
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vacuũ
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repleri omninò non poteſt,
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& ideo vacuum procùl dubio remanebit. </
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Cap. 12. dę
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vacui neceſ
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ſitate.</
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<
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id
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abbr
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vacuũ
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diſperſum intra exiguas corporum particulas admit
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ti debere. </
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</
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<
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intra corpora fluida, ſi oſtenderimus motus aliquos
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fieri non poſſe abſque vacui intermixtione, erit pro
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fectò certum vacuum admitti debere. </
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PROP. CCLXVI.
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In diſciſsione corporis flexibilis, dum partes tractione ſepa
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rantur, neceſſariò vacuum intercipitur.
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<
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id
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">ET primò conſideremus
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abbr
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motũ
">motum</
expan
>
, quo diuelluntur,
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lb
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ſcinduntur, & ſe parantur duo
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expan
abbr
="
fragmẽta
">fragmenta</
expan
>
ſaxi du
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lb
/>
riſſimi ab aliqua valida percuſſione diffracti, vel à vi
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lb
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cunei, aut vectis exſciſſi, in ijs duę ſuperficies
<
expan
abbr
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fragmẽ-torũ
">fragmen
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torum</
expan
>
, quę arctiſſimè
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abbr
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cõnexę
">connexę</
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>
& vnitę
<
expan
abbr
="
erãt
">erant</
expan
>
, licèt in
<
expan
abbr
="
inſtã-ti
">inſtan
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lb
/>
ti</
expan
>
videantur ab
<
expan
abbr
="
inuicẽ
">inuicem</
expan
>
ſeparari, tamen fatendum eſt
<
lb
/>
in tempore breuiſſimo diuiſionem peragi; atque hoc
<
lb
/>
contingere ex flexione quam
<
expan
abbr
="
patiũtur
">patiuntur</
expan
>
prædicta frag
<
lb
/>
menta, licèt ſint marmorea, aut adamantina, ex qua
<
lb
/>
inflexione fit vt prædicta
<
expan
abbr
="
fragmẽta
">fragmenta</
expan
>
in actu diuiſionis
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lb
/>
aliquantiſper incuruentur, & ſic non tota ſimùl in
<
expan
abbr
="
in-ſtãti
">in
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lb
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ſtanti</
expan
>
à ſubiecta ſuperficie diuellatur, ſed ſucceſſi
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lb
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uè vna pars poſt aliam; vt ſi duæ laminæ marmoreæ
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<
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abbr
="
vniãtur
">vniantur</
expan
>
duabus planis ſuperficiebus AB, & CB, cum
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lb
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diuellere planum CB aliqua potentia conatur, ſi CB
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flexibilis ſupponatur, patet quod diſiuncta particula </
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