Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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illo tempore mouetur duplo
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abbr
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vehemẽtiori
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gradu ve
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locitatis, quàm ſubſequens laminula deſcendit; ſed
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ab initio prædictæ duæ laminulæ contiguæ inter ſę
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erant, igitur in ſecundo tempore diuelli, ac ſeparari
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ab inuicem deberent; quod cum non contingat, pro
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cùl dubio ad erit aliqua cauſa, à qua colligatæ reti
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nentur; & hæc profectò erit gluten, & viſcoſitas illa
<
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exigua ſuperiùs declarata, qua partes eiuſdem fluidi
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adinuicem adhærent, & vinciuntur. </
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<
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id
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dictæ partes aquæ effluxæ à fiſtula inæqualibus velo
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citatibus moueantur, & nihilominùs non poſſint ab
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inuicem diuelli, ſepararique, ſequitur illa attenua
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tio, & gracilitas, quæ in aqua poſt egreſſum fiſtulæ
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obſeruatur, & propterea prædicta aqua magis, &
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magis acuminatur, gracileſcitque. </
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id
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s.002394
">Sed hìc iam reddi
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debet ratio, quare in progreſſu prædicta aqua fluens,
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lb
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poſtquam ad aliquam exiguam gracilitatem redacta
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eſt, poſtea diſrumpitur in plures partes, & guttulas;
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& hic
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abbr
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dicendũ
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eſt, quod vis, & energia prædicti glu
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tinis cum fit exigua non poteſt tandem reſiſtere ve
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hementiæ velocitatis continuò auctæ in ipſo aquæ
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deſcenſu, & hæc proindè poterit diſrumpere vnio
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/>
nem illam aquæ, qua priùs ferebatur, eo in loco v
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/>
bi glutem ab aliqua cauſa externa debilitatum fue
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rit, aut curſus velocitas variatur, retardaturque ab
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externo impedimento. </
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Cap. 11. gra
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uia in fluido
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velocitati
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bus inæqua
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libus ferri
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debere.</
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fluentis in aere extra fiſtulam, propterea relicta hac
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digreſſione, reliqua ſymptomata aquæ fluentis in fi
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ſtulis declarari debent. </
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