Borelli, Giovanni Alfonso, De motionibus naturalibus a gravitate pendentibus, 1670

Table of figures

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              <s id="s.002724">
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              ſariam, non poterit tribui prudenti illi cognitioni, ſeù
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              potiùs chimæricæ. </s>
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              Cap. 12. dę
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              vacui neceſ­
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              ſitate.</s>
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              PROP. CCLI.
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              <s id="s.002727">
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              In ſiphone inuerſo retracto embolo aqua aſcendit
                <expan abbr="nõ">non</expan>
              ſpontè,
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              ſed impulſa à maiori pondere, vel momento aquæ alteri­
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              us brachij ſiphonis.
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              <s id="s.002728">VT que hoc quanta fieri poteſt perſpicuitate
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              oſtendamus, intelligatur ſipho ABCD aqua
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              repletus, cuius crura AB, & DC perpendicularitèr ad
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              horizontem erecta ſint, tunc embolum
                <expan abbr="cũ">cum</expan>
              ſuo aſſario
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              EFG, & cum fiſtula DC ſyringam
                <expan abbr="cõpleat">compleat</expan>
              , & immiſſo
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              embolo intra fiſtulam quouſque eius baſis FG
                <expan abbr="fundũ">fundum</expan>
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              fiſtulæ C attingat, tunc patet, quòd aqua BC officium
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                <expan abbr="bilãcis">bilancis</expan>
              ſupplet, in cuius extremo B ſuperponitur mo­
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              les aquæ grauis AB, alteri ve­
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              rò extremitati C exigua aquæ
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              laminula FC imminet, & pro­
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              indè ſi reliqua eius portio FD
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              vſque ad horizontalem AD,
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              eſſet vel aere repleta, vel om­
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              ninò exinanita, & vacua, pro­
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              cùl dubio aqua FC
                <expan abbr="ſursũ">ſursum</expan>
                <expan abbr="aſcẽ-deret">aſcen­
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                deret</expan>
              versùs D, non
                <expan abbr="quidẽ">quidem</expan>
              ſponte ſua, ſed impulſa à
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              maiori contrapoſito pondere aquæ AB; propterea
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              quod in libra imaginaria fluida BC pars B magis preſ­
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              ſa à maiori pondere imminentis aquæ AB expellere
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              ſursùm debet minùs grauem aquæ molem FC, quouſ­
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              que ad æquilibrium in plano horizontali AD perdu­
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              catur; his præmiſſis retrahatur embolum EFG ſursùm </s>
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