Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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id
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s.001661
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pagenum
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317
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xlink:href
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010/01/325.jpg
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cedit, quòd parietes porulorum pumicis duri
<
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abbr
="
sũt
">sunt</
expan
>
<
expan
abbr
="
cõ-ſiſtentes
">con
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lb
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ſiſtentes</
expan
>
, & inter ſe connexi, & vniti, è contrà in gle
<
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ba parietes pororum ſunt valdè fragiles, & diſſolubi
<
lb
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les; vnde ſequitur, quòd aquæ particulæ vi grauitatis
<
lb
/>
intra poros glebæ inſinuatæ nedùm expellant aerem
<
lb
/>
ibi contentum, ſed etiam arenulas glebam conſtitu
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/>
entes, quæ tantummodò ſe tangunt, & nullo alio vin
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culo, nec glutine nectuntur, facilè ab inuicem diſſo
<
lb
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cient diſpergantque. </
s
>
<
s
id
="
s.001662
">porrò cùm ad aquæ
<
expan
abbr
="
immiſſionẽ
">immiſſionem</
expan
>
,
<
lb
/>
& aeris expreſſionem, atque aſcenſum neceſſariò mo
<
lb
/>
tus, & agitatio ipſius aquæ
<
expan
abbr
="
cõſequatur
">conſequatur</
expan
>
, hic verò mo
<
lb
/>
tus abſque impetu eſſe non poſſit, qui cùm vim cuiuſ
<
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cumque ponderis finiti ſuperet, vt demonſtrauimus,
<
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/>
<
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marg429
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facilè poterit exiguas illas arenulas diſſolutas nedum
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lateraliter, ſed etiam ſursùm aliquantiſper impelle
<
lb
/>
re, & hinc oritur turbida quædam nebula, quæ pro
<
lb
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pè glebam demerſam conſpicitur diù
<
expan
abbr
="
perſeuerãs
">perſeuerans</
expan
>
. </
s
>
<
s
id
="
s.001663
">Ex
<
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vniuerſa hac naturali operatione nemo ſanæ mentis
<
lb
/>
eliciet aquæ particulas continuo, & vago motu agi
<
lb
/>
tari naturali inſtinctu, & ab hoc principio produci
<
lb
/>
glebæ diſſolutionem, diſperſionemque arenularum
<
lb
/>
eius, & feruoris, qui in aqua tunc temporis conſpici
<
lb
/>
tur, nam hæc omnia habent ſuam cauſam
<
expan
abbr
="
neceſſariã
">neceſſariam</
expan
>
,
<
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nempè aquæ grauitatem, quæ poteſt, & debet
<
expan
abbr
="
nedũ
">nedum</
expan
>
<
lb
/>
expellere ſursùm leues aeris particulas intra glebæ
<
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poroſitates contentas, ſed etiam diſſoluere, & diſper
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gere ſuo impetu puluerulentas glebæ particulas per
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ipſammet aquam. </
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