Borelli, Giovanni Alfonso
,
De motionibus naturalibus a gravitate pendentibus
,
1670
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ſi contingat aquæ guttam pendentem diſtrahi ab ali
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qua violentia, illa attenuatur, & gracileſcit elonga
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turque, & denuò ceſſante violentia reſtringitur re
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colligitur, conglobaturque, ſic paritèr videmus a
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quam ad membranæ ſubtiliſſimæ
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extẽſionem
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redigi
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circa aerem ſpumam componentem, vnde conſtat
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partes aquæ inter ſe viciſſim colligari vinculo
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:
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id ipſum obſeruamus in vitro, & metallis fuſis. </
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liſcumque igitur ſit cauſa huius vinculi, & tenacita
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tis partium homogenearum eiuſdem fluidi, vel quia
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ab aliquo glutine, ſeù viſcoſitate vniantur, aut ab
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aliqua alia cauſa partes
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eiuſdẽ
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fluidi ſe mutuò
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am-plexẽtur
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plexentur</
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, &
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cõnectantur
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, certum eſt tamen veram eſſe
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prædictam vnionem, quotieſcumque fluidum intrą
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aliud fluidum alterius naturæ collocatur, vt oleum̨
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intra aquam, vel aer intra quodlibet aliud fluidum,
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non diſſipabitur, ſed tenaci quadam vnione conglo
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babitur, licet in motu poterit aliquo pacto eius figu
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ra rotunda alterari. </
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nibus fluidis cuiuſcumque naturæ ſint, nam aquą
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intra vinum, & metalla fuſa inter ſe commixta noņ
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ſegregantur; ſed facilè commiſcentur, confundun
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turque inter ſe. </
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<
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id
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">Et in hiſce aduertendum eſt
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abbr
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adductã
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experientiam locum non habere, ſed tantummodò
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in fluidis priùs expoſitis non homogeneis inter ſe. </
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Cap. 4. poſi
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tiuam leui
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tatem noņ
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dari.</
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<
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id
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">Supponamus igitur fluidum ABC, verbi gratia ae
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rem, vel hydrargyrum, moueri vi intrinſeca, vel vio
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lenter impulſum in aqua intra fiſtulàm
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ſtrictã
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>
RSVX
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contenta à termino B versùs E: & quia ſpatium DN </
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