Fabri, Honoré
,
Tractatus physicus de motu locali
,
1646
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<
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id
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N270EE
">
<
pb
pagenum
="
383
"
xlink:href
="
026/01/417.jpg
"/>
<
p
id
="
N2767F
"
type
="
main
">
<
s
id
="
N27681
">Secundò, per planum inclinatum tuncque ſi globus eſt, rotatur, quia
<
lb
/>
tollitur æquilibrium. </
s
>
</
p
>
<
p
id
="
N27686
"
type
="
main
">
<
s
id
="
N27688
">Tertiò, ita dimittitur globus, vt primò per manum quaſi decliuem ca
<
lb
/>
dat, tuncque ſimiliter rotatur propter
<
expan
abbr
="
eãdem
">eandem</
expan
>
rationem. </
s
>
</
p
>
<
p
id
="
N27691
"
type
="
main
">
<
s
id
="
N27693
">Quartò, dimittitur funependulum, & tunc deſcendit per arcum. </
s
>
</
p
>
<
p
id
="
N27696
"
type
="
main
">
<
s
id
="
N27698
">Quintò, dimittitur cylindrus, cuius altera extremitas nititur ſolo, &
<
lb
/>
tunc deſcendit etiam per arcum. </
s
>
</
p
>
<
p
id
="
N2769D
"
type
="
main
">
<
s
id
="
N2769F
">Sextò, dimittitur baculus; </
s
>
<
s
id
="
N276A2
">ſed inæqualiter, ita vt altera eius extremitas
<
lb
/>
cadat, antequam alia dimittatur, & tunc etiam circumagitur baculus; ſed
<
lb
/>
hæc ſunt facilis. </
s
>
</
p
>
<
p
id
="
N276AA
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type
="
main
">
<
s
id
="
N276AC
">
<
emph
type
="
center
"/>
<
emph
type
="
italics
"/>
Theorema
<
emph.end
type
="
italics
"/>
5.
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emph.end
type
="
center
"/>
</
s
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</
p
>
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p
id
="
N276B9
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type
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">
<
s
id
="
N276BB
">
<
emph
type
="
italics
"/>
Aliquotâ mobile proiectum excipitur manu multis modis.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
id
="
N276C2
"
type
="
main
">
<
s
id
="
N276C4
">Primò, firma & fixa manu, in quam cadit eodem modo, quo caderet
<
lb
/>
in parietem, vt patet. </
s
>
</
p
>
<
p
id
="
N276C9
"
type
="
main
">
<
s
id
="
N276CB
">Secundò, manu repellente, tunque eſt maior ictus. </
s
>
</
p
>
<
p
id
="
N276CE
"
type
="
main
">
<
s
id
="
N276D0
">Tertiò, manu ſenſim ſubſidente, vt fallat ictum; </
s
>
<
s
id
="
N276D4
">ſic lapidem ſurſum
<
lb
/>
proiectum cadentem ita excipimus manu, immò & maiorem globum,
<
lb
/>
vt vix vllum ictum ſentiamus; </
s
>
<
s
id
="
N276DC
">quod vt fiat, manus retroagi debet, non
<
lb
/>
quidem pari velocitate cum globo, ſed paulò tardiore motu, vt ſcilicet
<
lb
/>
modicum impetum imprimat globus; </
s
>
<
s
id
="
N276E4
">ſi enim manus pari velocitate
<
lb
/>
moueretur, nullum prorſus impetum imprimeret globus; </
s
>
<
s
id
="
N276EA
">ſi verò non
<
lb
/>
moueretur, ſed omninò manus quieſceret, maximum ictum exceptus
<
lb
/>
globus infligeret; </
s
>
<
s
id
="
N276F2
">ſi verò moueatur ſed paulò tardius aliquid impetus
<
lb
/>
imprimetur ſingulis inſtantibus, donec tandem totus ictus extingua
<
lb
/>
tur; </
s
>
<
s
id
="
N276FA
">adde quod mollities manus ad extinguendum ictum potiſſimum
<
lb
/>
confert; analogiam habes in lana, quæ tormentorum vim penitus
<
lb
/>
eneruat. </
s
>
</
p
>
<
p
id
="
N27702
"
type
="
main
">
<
s
id
="
N27704
">Quartò, vt longiùs repellatur pila, ſecundus modus adhiberi debet
<
lb
/>
eritque motus mixtus ex directo & reflexo. </
s
>
</
p
>
<
p
id
="
N27709
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type
="
main
">
<
s
id
="
N2770B
">
<
emph
type
="
center
"/>
<
emph
type
="
italics
"/>
Theorema
<
emph.end
type
="
italics
"/>
6.
<
emph.end
type
="
center
"/>
</
s
>
</
p
>
<
p
id
="
N27718
"
type
="
main
">
<
s
id
="
N2771A
">
<
emph
type
="
italics
"/>
Explicari poſſunt omnia phœnomena tractionis.
<
emph.end
type
="
italics
"/>
</
s
>
</
p
>
<
p
id
="
N27721
"
type
="
main
">
<
s
id
="
N27723
">Primò, trahitur mobile per productionem impetus; </
s
>
<
s
id
="
N27727
">nec enim po
<
lb
/>
tentia motrix, quæ reuerâ cauſa eſt tractionis, quidquam aliud produce
<
lb
/>
re poteſt; </
s
>
<
s
id
="
N2772F
">præterea quod trahitur, verè mouetur; igitur per impetum,
<
lb
/>
ſic differt tractio à mera detentione, de qua ſuprà. </
s
>
</
p
>
<
p
id
="
N27735
"
type
="
main
">
<
s
id
="
N27737
">Secundò, hinc tractio eſt actio potentiæ motricis, qua mobile ipſum
<
lb
/>
propiùs accedit ad motorem; </
s
>
<
s
id
="
N2773D
">nam motor ad ſe trahit mobile; </
s
>
<
s
id
="
N27741
">igitur
<
lb
/>
mobile accedit ad motorem: </
s
>
<
s
id
="
N27747
">quod tantùm dictum ſit de tractione di
<
lb
/>
recta; nam per reflexam, ipſe motor ad mobile accedit, de qua
<
lb
/>
infrà. </
s
>
</
p
>
<
p
id
="
N2774F
"
type
="
main
">
<
s
id
="
N27751
">Tertiò, quando trahitur aliquod mobile, impetus producitur in om
<
lb
/>
nibus illius partibus; </
s
>
<
s
id
="
N27757
">probatur, quia omnes mouentur; igitur omnes
<
lb
/>
recipiunt impetum. </
s
>
<
s
id
="
N2775D
">Secundò, quia ſi tantùm in vna produci impetum </
s
>
</
p
>
</
chap
>
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body
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archimedes
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