Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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Cap. 7. dę
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natura flui
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ditatis.</
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num placita, ſed
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naturæ leges, quatuor
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conditiones neceſſariæ eſſe videntur ad fluidi conſti
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tutionem. </
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ſum in exiguas, & minimas particulas. </
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eius figuræ ad orbicularem formam quam proximè
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accedant. </
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fectiſſimè lęuigatæ ad
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modũ
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ſpeculi, vel
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facilli
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mè vna ſuper
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alterã
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excurrere, & fluere poſſit. </
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<
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tãdẽ
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oportet vt omnes habeant
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æqualẽ
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vim motiuam qua
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deorsùm tendant, ſcilicèt ſint æquè graues; Poſſent
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hæc omnia (licèt rudi exemplo) non ineptè confir
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mari ſumptis pluribus globulis cryſtallinis,
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poſitiſq;
">poſitiſque</
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in aliquo vaſe, primò prædicti globuli ad ſigaram̨
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vaſis adaptantur, & ſi manus vſque ad fundum vaſis
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immittatur, tunc globuli prædicti locum cedunt, & ad
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latera excurrunt, præterea poterit moueri vna, vel al
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tera pila cryſtallina, quieſcentibus pilis collaterali
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bus, vel parum motis; inſuper poſt agitationem ex
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planarentur prædicti globuli, non enim aceruum, aut
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montem efficerent, veluti grana frumenti, aut arenæ,
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ſed ob eorum læuitatem facilè excurrerent deſcende
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rentque versùs infima loca, & ſic ſuprema ſuperficies
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explanaretur, & proximè horizonti æquidiſtantèr
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diſponeretur. </
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næ magis exiguæ, & minutæ eſſent, tunc multò faci
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liùs prædictæ operationes efficerentur, & ſi tandèm
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ad ineffabilem paruitatem redigerentur, non poſſent
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neque tactu neque viſu percipi, ſed apparentem con-</
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