Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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rum ſeparatio fiat motu perpendiculari ad eaſdem,
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ſcilicèt ſi planum ſupremum ſemper ſibi ipſi æquidi
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ſtando feratur) vel figuræ priſmatis triangularis (ſi
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motus circularis ſit circa axim firmum, quieſcentem
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que AG;) hoc verò ſpatium ſi repleri debet à cor
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pore ſolido, vel fluido, quod ambiat prædictæ cor
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pora, neceſsè eſt vt inſinuetur intra prædictum
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hiatũ
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motu ſucceſſiuo, qui quantacumque celerita re fieri
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fingatur, ſemper exigit tempus, numquam verò iņ
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in ſtanti fiet, & proindè ſaltem per aliquod exiguum
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tempus internæ partes prædictæ cauitatis in inſtanti
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creatæ, remanebunt prorsùs inanes, quapropter ibi
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dem verè vacuum admitti debet. </
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Cap. 12. dę
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vacui neceſ
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ſitate.</
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">Si poſtea conſideretur eiuſdem ſpatij vacui figura
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dum fit motus ſeparationis, procùl dubio
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creſcit, aut altitudinem, aut angulum DAH
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do</
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, ergo in qualibet particula temporis, in quo mo
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tus
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fit, creatur noua, & maior figura vacua,
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& ideò in quolibet minimo tempore debet inſinuari
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noua materia fluida, vel dura, vt replere valeat præ
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dictum ſpatium, quæ materia ſi componitur ex par
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tibus quantis, & duris, videtur impoſſibile accom
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modari poſſe, vt pręcisè impleat prædicta ſpatia cre
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ſcentia, & varias figuras habentia. </
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PROP. CCLXV.
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In ſeparatione corporum durorum contiguorum, vel conti
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nuorum licèt aer intercipiatur, & rarefiat, vacuum eui
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tari non potest.
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