Borelli, Giovanni Alfonso De motionibus naturalibus a gravitate pendentibus 1670

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<arrow.to.target n="marg162"/><lb/>
cili&ugrave;s eleuari, igitur omnin&ograve; nece&longs;s&egrave; e&longs;&longs;et vt fumus <lb/>
in pr&aelig;dicto vacuo &longs;patio a&longs;cenderet &longs;urs&ugrave;m, veluti <lb/>
eius natura exigit, &amp; &egrave; contr&agrave; e&longs;&longs;et impo&longs;&longs;ibile vt <lb/>
deors&ugrave;m deprimeretur, &amp; caderet, vt virgul&aelig; deci&shy;<lb/>
dentes aqu&aelig; fontium flectuntur deors&ugrave;m; quia ver&ograve; <lb/>
hoc experienti&aelig; repugnat non poterit dici, qu&ograve;d fu&shy;<lb/>
mus &longs;it leuis, &longs;ed &egrave; contr&agrave; grauis erit. </s> <s id="s.000654">C&ugrave;m ver&ograve; i&ntail; <lb/>
aere idem fumus &longs;urs&ugrave;m a&longs;cendat, <expan abbr="dic&etilde;dum">dicendum</expan> e&longs;t qu&ograve;d <lb/>
ab aere ambiente grauiori in &longs;pecie, qu&agrave;m &longs;it fumus <lb/>
iuxt&agrave; leges mechanicas libr&aelig; aer <expan abbr="prem&etilde;s">premens</expan> per extru&shy;<lb/>
&longs;ionem &longs;urs&ugrave;m fumum min&ugrave;s grauem expellit. </s> </p>

<p type="margin"> <s id="s.000655"><margin.target id="marg162"/>Cap. 4. po&longs;i&shy;<lb/>
tiuam leui&shy;<lb/>
tatem no&ntail; <lb/>
dari.</s> </p>

<p type="main"> <s id="s.000656"><emph type="center"/>PROP. LXIII.<emph.end type="center"/><!-- KEEP S--></s> </p>

<p type="main"> <s id="s.000657"><emph type="center"/><emph type="italics"/>Figuram pyramidalem flamm&aelig; lucern&aelig; non &longs;uadere eam &agrave; <lb/>
vi leuitatis &longs;urs&ugrave;m impelli.<emph.end type="italics"/><emph.end type="center"/></s> </p>

<p type="main"> <s id="s.000658">VEr&ugrave;m, quod ad formam pyramidalem flamm&aelig; <lb/>
lucern&aelig; pertinet, non videtur, qu&ograve;d eius figu&shy;<lb/>
ra conica nece&longs;&longs;ari&ograve; per&longs;uadeat, &amp; conuincat flam&shy;<lb/>
mam &longs;urs&ugrave;m &longs;ponte &longs;ua, &amp; propria virtute leuitatis <lb/>
a&longs;cendere, nam &longs;iue per extru&longs;ionem ambientis flui&shy;<lb/>
di violenter, &longs;iu&egrave; &longs;ponte &agrave; vi leuitatis &longs;urs&ugrave;m moue&shy;<lb/>
ri &longs;upponamus, retinere &aelig;qu&egrave; ben&egrave; po&longs;&longs;et eamde&mtail; <lb/>
conicam <expan abbr="figur&atilde;">figuram</expan>, vt inferi&ugrave;s o&longs;tendemus. </s> <s id="s.000659">Pr&aelig;terea &longs;i <lb/>
vera cau&longs;a figur&aelig; pyramidalis flamm&aelig; lucern&aelig; e&longs;&longs;et <lb/>
eius leuitas po&longs;itiua, deberet eadem leuitas po&longs;itiua <lb/>
eumdem effectum producere in reliquis omnibus <lb/>
corporibus fluidis parit&egrave;r ab ip&longs;a impul&longs;is, &longs;i tamen <lb/>
reliqua &longs;int paria, &longs;cilic&egrave;t fumus non &longs;ec&ugrave;s ac flam-