Fabri, Honoré
,
Tractatus physicus de motu locali
,
1646
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<
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78
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026/01/110.jpg
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uiores ſunt difficultates, quam vt illis fieri ſatis queat; </
s
>
<
s
id
="
N15E72
">nam primò cor
<
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pus leuius ab his filamentis abripi faciliùs poſſet, vt conſtat in electro;
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lb
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igitur citiùs deſcenderet. </
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</
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<
p
id
="
N15E7A
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type
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">
<
s
id
="
N15E7C
">Secundò, corpus vicinius etiam faciliùs abriperetur. </
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>
</
p
>
<
p
id
="
N15E7F
"
type
="
main
">
<
s
id
="
N15E81
">Tertiò, numquid flante vento, vel imbre cadente diſſipantur hæc fi
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lamenta? </
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>
<
s
id
="
N15E86
">quod etiam videmus in electro. </
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>
</
p
>
<
p
id
="
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type
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">
<
s
id
="
N15E8B
">Quartò, manum meam æquè facilè traheret terra his funiculis ſeu
<
lb
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pondere grauatam, ſeu vacuam. </
s
>
</
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>
<
p
id
="
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type
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">
<
s
id
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">Quintò, quemadmodum electrum ex omni parte trahit, ita terra ipſa
<
lb
/>
per omnem lineam traheret; immò etiam ſurſum in ſubterranea ſpecu,
<
lb
/>
quod eſt abſurdum. </
s
>
</
p
>
<
p
id
="
N15E9A
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type
="
main
">
<
s
id
="
N15E9C
">Sextò, hæc filamenta, quæ deinde reducuntur, debent habere cau
<
lb
/>
ſam huius reductionis non extrinſecam; </
s
>
<
s
id
="
N15EA2
">igitur intrinſecam; igitur datur
<
lb
/>
motus naturalis. </
s
>
</
p
>
<
p
id
="
N15EA8
"
type
="
main
">
<
s
id
="
N15EAA
">Septimò, hæc filamenta per mediam flammam non traherent, quod
<
lb
/>
etiam fieri videmus in electro. </
s
>
</
p
>
<
p
id
="
N15EAF
"
type
="
main
">
<
s
id
="
N15EB1
">Quartò, motus naturalis non eſt à virtute quadam pellente, quam
<
lb
/>
cælo quidam affingunt; </
s
>
<
s
id
="
N15EB7
">nam vel ab omni parte cæli deorſum trudere
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lb
/>
tur, vel ab vnâ; ſi ab vna; </
s
>
<
s
id
="
N15EBD
">igitur in omni cæli plaga corpus non fertur
<
lb
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deorſum; </
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>
<
s
id
="
N15EC3
">ſi ab omni, ergo cum pellatur corpus per plures lineas etiam
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lb
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oppoſitas moueri non poteſt: </
s
>
<
s
id
="
N15EC9
">Præterea debilior eſſet hæc vis in maiori
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diſtantiâ; denique vapores, & alia minutiora corpuſcula in aëre fluitan
<
lb
/>
tia faciliùs deorſum truderentur, contra experientiam. </
s
>
</
p
>
<
p
id
="
N15ED1
"
type
="
main
">
<
s
id
="
N15ED3
">Sed non eſt omittendum, quod aliqui putant ex illis filamentis con
<
lb
/>
texi poſſe legitimam rationem, cur atomi etiam plumbeæ materiæ non
<
lb
/>
ita facilè deſcendant; </
s
>
<
s
id
="
N15EDB
">quòd ſcilicet propter ſuam tenuitatem ab illis fi
<
lb
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lamentis non ita intercipi vel implicari poſſint; </
s
>
<
s
id
="
N15EE1
">ſed quaſi piſces per fo
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lb
/>
ramina retium euadant; ſed profectò longè alia ratio eſt, quàm ſuo loco
<
lb
/>
afferemus, nam etiam plumæ, feſtucæ, paleæ, & alia corpuſcula longio
<
lb
/>
ra, ſed leuiſſima iis filamentis implicarentur, vt videre eſt in electro. </
s
>
</
p
>
<
p
id
="
N15EEB
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type
="
main
">
<
s
id
="
N15EED
">Quintò, aliqui recentiores exiſtimant corpora deorſum trudi ab
<
lb
/>
ipſa luce, quæ nihil eſt aliud, quam motio æthereæ cuiuſdam ſubſtan
<
lb
/>
tiæ per poros aëris traductæ, vt ipſi volunt; ſed neque hoc probari po
<
lb
/>
teſt. </
s
>
<
s
id
="
N15EF7
">Primò quia de nocte corpora æquali motu deorſum feruntur; pe
<
lb
/>
rinde atque de die, nec minùs in obſcuriſſimo conclaui, quàm ſub dio,
<
lb
/>
vel aperto cælo. </
s
>
<
s
id
="
N15EFF
">Secundò, in ſubterraneis locis etiam grauia æquè veloci
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lb
/>
ter deſcendunt; </
s
>
<
s
id
="
N15F05
">licèt eò lumen non penetret; </
s
>
<
s
id
="
N15F09
">quod ſi aliquis obſtinatè,
<
lb
/>
id aſſereret; </
s
>
<
s
id
="
N15F0F
">haud dubiè per medium aëra maior huius materiæ copia
<
lb
/>
diffunditur, quàm per medias rupes, quis hoc neget; igitur pauciſſimi
<
lb
/>
radij vſque ad interius & inferius antrum perueniunt. </
s
>
<
s
id
="
N15F17
">Tertiò, manum
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meam ſiue ponderi coniunctam ſiue ab eo
<
expan
abbr
="
ſeparatã
">ſeparatam</
expan
>
æqualis portio illius
<
lb
/>
materiæ deorſum pelleret, vt patet; igitur æquali motus vi. </
s
>
<
s
id
="
N15F23
">Quartò, cor
<
lb
/>
pus diaphanum, per cuius poros facilè traiicitur hæc materia, eſſet leuius
<
lb
/>
alio quod tamen falſum eſt, vt videre eſt in vitro, cryſtallo, adamante,
<
lb
/>
glacie. </
s
>
<
s
id
="
N15F2C
">Quintò maxima huius materiæ copia collecta ſeu ſpeculi opera </
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>
</
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>
</
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</
body
>
</
text
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archimedes
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