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

Table of figures

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              nuò duplici veſica ſuilla ſtrictè alligata claudatur
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              orificium F. </s>
              <s id="s.001280">Poſteà præparari debet vas profundum
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              PQR aqua plenum vſque ad ſummitatem PR, ſitque
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              eius profunditas tanta vt mergi poſſit vniuerſum in­
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              ſtrumentum MAC, vt tamen eius baſis C putei fun­
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              dum non attingat; demergatur fiſtula prædicta vitrea
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              vnà cum mercurio contento intra aquam; & ſi fortè
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              os ſupremum vitri M non demergitur infra aquæ ſu­
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              perficiem PR, exigui anuli ænei totidem vnciæ gra­
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              na pendentes in C, & in ſummitate A apponantur,
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              quouſque vniuerſa machina vitrea fiat proximè mi­
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              nùs grauis ſpecie quàm aqua, ſcilicèt innatet, & emi­
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              neat ſupra aquę libellam PR pars aliqua SN prædi­
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              cti fili ænei vitro annexi, & in S fiat æquilibrium, &
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              quies. </s>
              <s id="s.001281">Deinde in aere aperiatur ſupremum os vitri
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              M, vt ſpatium inane ABL aere impleatur,
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                bitque</expan>
              reliqua pars fiſtulæ plena hydrargyro, vt priùs,
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              propterea quod operculum in F impedit
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              mer­
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              curio LCF. </s>
              <s id="s.001282">In hoc ſtatu denuò eadem ſuilla veſicą
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              claudatur arcteque ligetur vitri os ſupremum M; &
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              tandem denuò demergatur fiſtula infra
                <expan abbr="libellã">libellam</expan>
              aquæ
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              PR. </s>
              <s id="s.001283">Et quia in hoc caſu demergitur infra aquæ libel­
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              lam moles conflata ex ijſdem corporibus, ſcilicèt ex
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              vitro ACF, ex hydrargyro LCF, & ex ijſdem veſicis,
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              & filis M & F, & ſolummodò de nouo adeſt aer ABL,
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              quo fiſtula priùs care bat; igitur neceſsè eſt, vt
                <expan abbr="põdus">pondus</expan>
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              totius machinæ NACF maius ſit quàm in priori ſta­
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              tu quando ſpatium ABL vacuum fuerat. </s>
              <s id="s.001284">Quaproptèr
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              non poterit denuò ſubleuari fiſtula ad eamdem alti-</s>
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